Weaving an innovation network from the middle-out: the case of the renewable energy ecosystem

Background: Renewable energy (RE) systems are becoming a central component of the clean energy transition and are often seen as the way to combat climate change. Their establishment requires innovation, investments, and deployment policies for emerging technologies. Governments around the world are increasingly trying to create and support the energy-tech and climate-tech innovation ecosystems in their attempt to promote an innovation-support-ing environment. However, energy innovation policies are often aligned with the dichotomous notion of technology-push and market-pull and overlook the social, political, and cultural contexts in which RE innovative technologies are embedded, and the multiple actors and interactions that are associated with their development. By combining the Middle-Out Perspective (MOP) and innovation literature, this paper argues that an innovation ecosystem could be weaved from the middle-out. Methods: This paper analyzes the case of ‘Eilat-Eilot Renewable Energy Initiative’ and Israel’s RE innovation ecosystem creation through the lens of the MOP and applies a socio-technical interpretation to the push and pull terminology. Process tracing methodology was applied to trace a sequence of events to determine whether an actor was pushed or pulled, the formation of a network of actors, and its evolvement to an energy innovation ecosystem from the middle-out. Data for the analysis were collected from interviews, policy papers, media articles, and Governmental decisions. Results: The analysis demonstrates how middle actors push the implementation of RE technologies in Israel, and at the same time pull decision-makers and other middle actors to promote the low carbon transition. The push and pull forces and the interactions between actors lead to the engagement of new stakeholders in the innovation network, the adoption of more ambitious RE targets and supporting policies, and the creation of an effective RE innovation ecosystem. Conclusions: This paper uses the MOP as an analytical framework and the push and pull terminology to demonstrate how a middle actor initiates and develops an actor-network by interacting with other actors. As this network broadens, it forms an effective innovation ecosystem. A network of actors has the potential to lead change, provide innovative ideas, initiate research, encourage investments, create employment possibilities, and promote regional sustainable development.


Background
New technologies and innovation are often seen as the best way to combat climate change [1,2]. Renewable energy (RE) systems and their derivatives-including production, infrastructure, storage, and management technologies-are becoming a central component of the clean energy transition, and their establishment requires innovation, investments, and deployment policies for emerging technologies [3][4][5]. Ideally, innovation-friendly governance should endorse climate protection, encourage competition in developing new products, create new markets, strengthen the economy and generate job opportunities [6,7].
The emergence of innovation is often described as a linear sequence in which a product stems from research labs, is then developed, commercialized, and diffused to the market by an industry ('technology push'), or as an invention that is proposed or developed as a solution to an identified new market needs ('market pull'). In practice, market-pull and technology-push are matched when a need and a solution emerge simultaneously. This matching is critical for mainstreaming innovation [7][8][9][10][11]. However, the assumption that innovation results from coupling new technologies and market demand overlook the social, political, and cultural contexts in which this process takes place. The contextual aspects of RE innovation include elements such as public awareness of environmental problems and resource exploitation, as well as concerns regarding health hazards linked to different RE systems [12,13]. The linear push and pull perspective does not pay sufficient attention to the various components that are associated with innovation development [14].
The 'systems of innovation' approach, which emerged in the mid-1990s [15][16][17][18][19][20][21] perceives innovation as initiated and shaped by the 'systemic' interactions between multiple actors, sectors, and technical change. It presents the emergence of innovation as a horizontal prism, rather than the narrow and vertical focus of technology-push and market-pull [22]. Thus, innovation is recognized as a multi-layered network that assembles different types of actors (including, for example, academic institutions, corporates, investments funds, professionals, and policymakers) from different levels (local, regional, national), joined by the mutual goal to enable a change or sectoral development, and which eventually creates an innovation ecosystem [23][24][25][26].
Governments around the world are increasingly striving to create and support clean-tech, energy-tech, and climate-tech innovation ecosystems to promote an innovation-supporting environment [27]. However, current energy innovation policies are still very much aligned with the dichotomous notion of technology-push and market-pull and its underlying logic that supply-side leads to demand-shift, and influences both the area where innovation is needed and the timeline of innovation emergence [28,29]. This logic leads to top-down-induced incentives for energy innovation, such as motivating "carrots" and penalizing "sticks" in the forms of government-supported Research and Development (R&D), Feed-in-Tariffs (FiT), subsidies, tax credits, or rebates for consumers [30][31][32][33][34][35]. It ignores, however, broader elements that influence the spread of innovation, such as skills and training, and the role of prototyping and demonstration. It also overlooks the fact that all technologies, including RE technologies, are improving continually and these improvements affect the whole energy system [27].
Various actors aside from governments are operating in the arena of RE innovative technologies, including nongovernmental organizations (NGOs), professional organizations, firms, local municipalities, and others. These actors are often filling a leading role in the development and implementation of innovation by offering funding, providing a field for experimentation, creating regional hubs, supporting energy cooperatives, or declaring carbon neutrality zones [36][37][38][39][40][41]. Their roles extend beyond the aspects directly related to technology development, as they also provide innovative ideas and serve as knowledge brokers, watchdogs, lobbyists, and representors of marginal voices [42][43][44][45]. As such, these actors are essential players in the innovation network and active participants in the low carbon transition.
Those actors participating in the transition network are considered by the Middle-Out Perspective (MOP) as middle actors. The MOP [46,47] is an analytical framework used to understand how socio-technical changes happen. It focuses on middle actors that are positioned in-between the policymakers at the top and the energy users at the bottom. Because they have assets and resources, middle actors can diffuse their agendas, knowledge, and experience in a middle-out manner: upwards (to influence policymakers), downwards (to influence citizens and end-users), and sideways across their networks (to influence other organizations, companies, and actors located in between the levels).
Although financial policies associated with technology-push and market-pull fail to address the complexity involved in the creation of an innovation network of actors, it is useful to examine this process using the push and pull terminology. The push and pull concepts capture the balance of forces affecting the co-dependent relationships between the various actors, facilities, institutions, funds, and knowledge, which together compose the innovation ecosystem. Therefore, this paper is aiming to propose a socio-technical interpretation of the push and pull terminology within the MOP context: in the lack of regulation or existing opportunities for RE implementation, middle actors who are driven by economic considerations, environmental values, or ideology, are 'pulling' top, middle, and bottom actors to promote the sociotechnical low carbon transition. Given the opportunity to act, middle actors can be 'pushed' by other actors to implement RE technologies. The push and pull forces and the interactions between actors lead to the engagement of new stakeholders in the innovation arena and weave a network that creates an effective innovation ecosystem.
This study follows the evolution and roles that the local public benefit corporate 'Eilat-Eilot Renewable Energy Initiative' (hereafter, Eilat-Eilot) has played in the creation of the Israeli RE innovation ecosystem. Eilat-Eilot is located in the south of Israel and was established in 2002 by two neighboring local municipalities. Despite its peripheral location, low socioeconomic status, the lack of supportive national climate policy, and insufficient RE supporting regulation, Eilat-Eilot set itself an ambitious goal to promote national RE as well as regional clean energy self-sufficiency by 2025 and to become a leader in the development of low-carbon innovative technologies in Israel.
Today, many actors are involved in the transition to a RE-powered electricity system in Israel. However, Eilat-Eilot was one of the pioneering actors in this field and still is an important actor in the weaving of the local and national RE enabling ecosystem, and therefore this study focuses on Eilat-Eilot's role.
Using the MOP as an analytical framework and the push and pull terminology, our analysis (1) demonstrates the middle actor role played by Eilat-Eilot in initiating and strengthening an innovation network to promote sustainable local development; (2) traces the push and pull forces between Eilat-Eilot and policymakers and shows how Eilat-Eilot activities challenged the unambitious national targets and contributed to Israel's RE energy policy; and (3) follows the formation of RE innovation ecosystem and highlights its contribution to the development and implementation of RE in Israel.
Most of the MOP research to date has focused on middle actors' impact on top and bottom actors. Much less attention has been given to the sideway impact, i.e., the impact of middle actors on other actors located between the top and bottom [48]. Tracing the activities by which a middle actor initiated and contributed to the development of a network of actors, sheds light on this less-studied aspect of the MOP-the sideways interactions. By combining the MOP and innovation literature, this paper argues and demonstrates that connections between diverse middle actors who share different assets, capabilities, and qualities, provide a fertile ground for innovation. That said, middle actors are not interacting only among themselves, but also with top and bottom actors, thus middle-middle interactions should be examined in the context of all the interactions that take place. Here we demonstrated how middle-middle connections alongside other middle-out interactions played key roles in the establishment of an innovation network.
Previous studies that applied the MOP as an analytical perspective focused on three middle-out modes of action-aggregation, mediation, and enabling-and on the levels of actors' agency and capacity, as variables that affect the course and magnitude of change [48,55,61]. The current case study focuses on the balance of power between the various actors in the arena, and on how actors are pushed to use their capabilities to act or pulled to increase their level of agency and become actively involved in a network of actors that form an innovation ecosystem. As such, this research contributes toward a more comprehensive understanding of the middle-out mechanisms of change and highlights that a network that is composed of many top, bottom, and middle actors effectively promote innovation in general, and in the RE area in particular.
This insight has practical implications for the EU RE promotion policies. The EU seeks to strengthen local governments and local communities and promote their social and environmental resilience by relying on sustainable and local assets and resources [49,50]. Local climate mitigation solutions and social resilience could be gained by innovation or policies that are suitable for the local socio-technical conditions, and which local governments are familiar with. Hence, while this paper focuses on a case study from Israel, the insights from the phenomena it demonstrates-the creation of effective innovation promoting networks-are relevant to other places in which the local government's targets are more ambitious than those of the central government.
The paper begins with a short introduction to the MOP followed by a description of Israel's RE policy and the research method. Next, we present the findings, which track the development of the Eilat-Eilot network between 2002 and 2020 and the impact it had on the RE innovation ecosystem and the RE sector in Israel. The paper concludes with some policy recommendations.

The middle-out perspective
The transition to a low carbon energy system is often seen as a process induced by policymakers through regulation and economic incentives in a top-down manner, or by local organizations and civic pressure in a bottom-up manner. The MOP suggests that there is a 'middle' layer of active and influential actors between the policymakers at the top and the citizens at the bottom. Policymakers ignore many of these middle actors as they are not perceived as having any official role in the transition [46,47]. The groups of middle actors include a variety of forprofit and non-profit organizations, communities, groups of professionals, and institutions that contribute to a systematic durable change of the energy system [51][52][53][54][55][56][57][58]. The MOP argues that due to their position between the top and bottom and their connections with actors positioned at the top and bottom, middle actors can influence in three directions-upwards on government officials and regulators, downwards on end-users and citizens, and sideways on peers and similar organizations and actors. The strength of middle actors stems from their perception as reliable and legitimate by other actors in the policy domain, and from their unique qualities which other actors in the system are short of or lack, such as tacit knowledge and skills, unique access to financial resources and other assets, social and professional legitimacies, and unique communication channels [46,47]. Previous studies which applied to the MOP in the field of energy and the field of public health demonstrated how middle actors fill the functions of (1) aggregators of assets and financial resources, thus supporting and coordinating valuable actions; (2) mediators between policymakers and the public, thus making relevant information and regulation accessible to the public, and at the same time reflecting the public's needs and concerns to policymakers; and (3) enablers of actions by having the knowledge and capability to tackle physical, technical and bureaucratic difficulties [48,59,60].
The MOP also suggests that an actor with high levels of agency and capacity can derive a durable change. Agency indicates an actor's motivation, interest, and willingness to act in order to achieve a certain goal, and is shaped by social norms, culture, common practice, and regulations. Capacity indicates the actor's capability to execute the actions it wishes to perform and is affected by external factors (such as physical and technical abilities, existing infrastructure, and available technologies), as well as internal factors (such as financial means, knowledge, and expertise) [47,48,61,62]. Middle actors have the unique qualities and assets necessary to elevate the levels of agency and capacity of other actors in the policy arenaat the top, middle and bottom-thus increasing the likelihood for a durable change to occur.
Previous research demonstrated how various middle actors, including religious congregations [47], building professionals [46,53,54,60,[63][64][65], local communities [56], businesses [48], and social groups [57,59] performed middle-out strategies and promoted the transition to a low carbon society in various ways. These studies focused mainly on the influence on top and bottom actors. Other studies followed the mechanisms of influence in the fields of RE and electric vehicles [48].
Here, we emphasize the sideway mode of actions and the sideway impacts and highlight how middle actors establish an actor-network by interacting with other actors. As this network broadens, it forms an effective innovation ecosystem.

Israel's renewable energy status: unambitious targets and lagging implementation
In 2020, the Israeli electricity fuel mix included 70% natural gas, 24% coal, and only 6% RE. By 2025, Israel intends to phase out coal, increase the production and dependence on natural gas to nearly 80%, and increase renewable production to 21% [66]. Approximately 55% of Israel's GHG emissions are associated with electricity production [67], more than transportation, industry, and agriculture combined. Therefore, meaningful mitigation strategies should focus on the transition to low carbon and renewable-based electricity generation [68]. However, while improving Israel's energy independence, the discovery of major natural gas reserves strengthens Israel's dependency on fossil fuels, and some argue that it delays the decarbonization process [69][70][71].
Unlike other countries that are members of the Organization for Economic Co-operation and Development (OECD), Israel's National Determined Contributions (NDCs) to reduce national emissions and adapt to the impacts of climate change are moderate and unambitious [72]. In addition, the pledge to reduce emissions is on a per capita basis (from 10.4 to 7.7 million tons CO 2 e per capita by 2030), but due to Israel's high birth rate, the per capita reductions will be compensated by population growth, thus Israel is not expected to reduce its overall emissions at all [73].
Israel is already experiencing climate change effects such as rising minimum and maximum temperatures, sea-level rise, and more frequent extreme weather events, including prolonged droughts and floods [72]. It undoubtedly needs to formulate effective climate adaptation policies, while contributing to the world's mitigation efforts to transition to a low carbon society [69].
Four types of renewable sources are suitable for Israel's conditions: the most prominent and applicable one being solar (PV and thermo-solar), followed by wind, biomass, and biogas [74]. However, a combination of economic and political factors, rather than concerns regarding climate change, has influenced Israel's RE targets. These factors include the cost of technology and the financial support required by the state for early adopters, as well as the aspiration to become a member of the OECD and ratify the Paris Agreement [75]. Over the years, the Israeli Government has made several decisions regarding the production of electricity from RE sources [76]. Table 1 summarizes four governmental RE targets that were set Although the first governmental target regarding RE generation was set in 2002, supporting policies or implementation strategies were not issued until 2011. In 2008, the Electricity Authority (the Israeli electricity regulator) allocated quotas for RE generation and provided FiT for each type of technology. Meeting these quotas was challenging because of the lengthy and complex facility planning process and permit approval procedures, and because the involvement of numerous stakeholders slowed down the construction process of the RE facilities [76,78,79]. The quota system was criticized by the State Comptroller as inadequate, and a 2012 governmental committee that examined the economic viability of integrating RE facilities recommended changing the quota system. However, only in early 2017, when the technology costs dramatically declined (mainly PV), the Electricity Authority moved to a price tenders' method. The Electricity Authority also made significant efforts to ease the bureaucratic processes [76]. In the past decade, a comprehensive reform of the electricity sector in Israel was launched [80]. The most prominent change was that the vertically integrated electricity market, which had been ruled by a single state-owned monopoly (IEC, Israel Electricity Company), was split into segments. The generation segment was the first to be privatized with new renewable and conventional (mainly, based on natural gas) energy generators allowed to participate in the electricity market. Lack of transparency regarding the network's capacity to absorb electricity generated from RE and unclear timeframes of approving RE facilities grid connections influenced the validity and credibility of the Electricity Authority regulations, which led to uncertainty among entrepreneurs regarding the feasibility of their projects [79].
Often, the reluctance of the Israeli government to sponsor new technologies inhibits the advancement of innovative proven technologies that are in their early deployment stages but are still expensive and therefore require financial support. In the RE field, this results in a bias against smaller facilities in urban areas, such as rooftops on commercial and public buildings, in favor of large projects over open lands [80]. However, years of low investments in transmission lines have led to insufficient transmission capacity, which does not support the operation of new large RE facilities in most areas of the country [81]. Improving the transmission infrastructure to accommodate distributed RE generation could take 5-15 years and this is likely to slow the pace of new RE installation and make Israel's goal of 30% RE by 2030 hard to achieve [82]. Recent policy papers suggest that energy storage in the existing transmission network could enable the connection of additional RE facilities in the near future, even before new transmission lines are built [83].
While the RE generation in Israel is lagging behind many other OECD countries, the RE industry is positioned at the forefront in terms of innovation and groundbreaking technologies. However, bureaucratic barriers in the processes of allocation and licensing pilot and demonstration facilities, as well as financial difficulties, prevent the implementation of local innovative solutions in Israel and inhibit their penetration to the international market [84].

Data collection
To follow the development of the network of actors and to examine the unique contribution of Eilat-Eilot to the formation of the Israeli energy innovation ecosystem, data were collected from various sources using different methods: Interviews. Nine semi-structured interviews were conducted with personnel from organizations at the top and the middle of the Israeli energy arena, including the Israeli Electricity Authority (two interviews) and Ministry of Energy (one interview), the Steering Committee of the strategic plan for a low-carbon economy in Israel 2050 (one interview), Eilat-Eilot officials (two interviews), local renewable energy entrepreneurship (two interviews) and Federation of Local Authorities in Israel (one interview). All the interviews lasted approximately 1 h and were audio-recorded (with informed consent) and transcribed. Documents. Various documents were reviewed, including 50 articles that were published online in newspapers and the economic press, covering Eilat-Eilot development between 2002 and 2020; 10 min of different Israeli Parliament's committees that discuss RE policy, implementation, and the associated barriers; 6 governmental decisions related to RE; 12 reports that address Israel's climate and energy policy and the future of the energy sector.

Data analysis
Process tracing methodology [85,86] was applied in this study to analyze the data. This methodology is commonly used for qualitative analysis, mainly in political and historical studies, as it enables the researcher to trace a sequence of events and to determine whether there is a circumstantial connection between specific actions and the resulting outcomes [87][88][89]. A detailed and rich description allows the researcher to follow a narrative within a case study, link theory with empirical work [90], and answer questions such as: Was it an Eilat-Eilot activity that pulled policymakers to set a specific regulation? Did a specific government call for action push Eilat-Eilot to act?
In the analysis, the historical sequence of governmental activities and Eilat-Eilot activities are described, with an emphasis on the time in which governmental discussions took place, decisions were made, and regulations were set. In parallel, the layout of the various activities that were taken by Eilat-Eilot during the examined period is presented. Along this timeline of activities, new actors that joined the Eilat-Eilot network are recognized, and their active contribution is acknowledged.
To establish a regulatory outline and identify barriers to the implementation of RE, public statements, governmental decisions, and other publications were reviewed. Articles from newspapers, websites, and policy documents were used to trace and establish push and pull forces between Eilat-Eilot's network of actors and the various officials that were acting at that time. Lists of participants in professional forums, conferences, and courses were followed to track the formation of the network, as well as media articles. Findings were complemented by input from the interviews.
After collecting the data, we created a timeline on which the sequence of actions, connections between the actors, government decisions, and regulatory processes were laid out to track whether there was a circumstantial relation between events. This also determined whether an actor was pushed or pulled. An actor can be pulled to be engaged in providing solutions to needs such as electricity generation from RE, reduction in GHG emissions, or implementing innovative technologies. On the other hand, an actor can be pushed to act by regulation or by other actors who are looking for collaboration. For example, Eilat-Eilot pulled decision-makers to promote RE policy and regulation. Tenders or calls for action pushed Eilat-Eilot and other actors in the network to deploy RE facilities. By using the process tracing methodology, we can identify the push and pull forces that shape RE decisions and determine if and how Eilat-Eilot influenced Israel's energy policy and regulation. We can also follow the progress toward the Eilat-Eilot regional goals while tracking the formation of the network, and its evolvement into an energy innovation ecosystem.

Results
For contextual reasons, this section will begin with a description of Eilat-Eilot and its historical background, as well as why it is considered a middle actor.

In the middle: the 'Eilat-Eilot Renewable Energy' initiative
The southern region of Israel (also referred to as the Southern Arava region 1 ) is arid with high solar radiation. It is located at the edge of the national electricity grid and suffers from under-maintained electricity infrastructures that have significant transmission losses. As a result, when electricity demand is higher than usual, a polluting oil-fueled substation in the city of Eilat is switched on.
Located on the Red Sea coast, Eilat's main source of income is local and international tourism. Hotels, restaurants, and other hospitality activities use air-conditioning around the clock during summer.
Eilot Regional Council is adjacent to Eilat. It accounts for 13% of the total land of Israel with only 4500 residents living in 12 settlements, 10 of which are Kibbutzim, which are rural settlements relying on agriculture as a primary source of income.
Between the years 1995 and 2008, the Kibbutzim owned a commercial fish farm located in the north of the Gulf of Eilat. After a decade of fierce opposition from Zohar et al. Energy, Sustainability and Society (2022) 12:37 the city of Eilat and environmental organizations, a 2005 governmental decision ruled that the fish cages should be removed within 3 years. At the end of 2008, the cages were evacuated, the Kibbutzim lost a lucrative agricultural industry, and the relationship between the two municipalities became very hostile.
Driven by the need to provide economic and social resilience to the Arava region, a strategic plan involving both municipalities (Eilat and Eilot) was written in 2002 by the head of the regional environmental unit. The plan was based on RE generation, focusing on solar as the potential for generating electricity from wind turbines in this region is rather small, to be used as a regional economic lever and set a production target of 100% RE electricity during the daytime by 2020, intending to reach energy self-sufficiency by 2025.
The 'Eilat-Eilot Renewable Energy' initiative began its activity as a department within the Eilot Regional Council in 2002, and by 2006, it became a separate entity. In 2012 it was established as a public benefit corporation that receives financial support from the city of Eilat and the Eilot Regional Council and is owned by the Kibbutzim and regional economic organizations.
At the end of 2020, 15 PV solar power plants varying in size with a total installed capacity of 190 MW provided 100% of the region's electricity consumption during the day.
Eilat-Eilot Renewable Energy was initiated by and for the residents of the Arava region. Its board consists of public representatives and its purpose is to promote regional interests to strengthen the economy and social resilience. In the MOP terminology, Eilat-Eilot could be considered a middle actor because it is positioned between the top and bottom actors and because it is perceived by the residents of the Arava region as a legitimate and trustworthy actor that represents the region's interests. Additionally, Eilat-Eilot, as described in the following section, aggregates physical assets, and scientific and technical knowledge, and therefore has high levels of agency and capacity to support innovation in various ways. Ultimately, Eilat-Eilot is shaping how energy is produced (by RE), consumed (as a promoter of regional macro-grid, that is an independent southern grid separated from the national grid), and stored (by providing demonstration sites for innovative storage technologies).

Push and pull forces, the formation of an actor-network and the RE innovation ecosystem
For concision, and as acceptable in similar studies [89][90][91][92] we do not illustrate our findings with quotations. Instead, based on the analysis, we describe the situation, events, and actions.
The findings of the analysis detailed below are presented in Fig. 1. Process tracing methodology follows a sequence of events over time and examines whether there is a circumstantial connection between them and the resulted outcomes. The figure schematically draws a timeline on which significant events appear over two decades. It follows both Eilat-Eilot and its network of actors' achievements, locally and nationally, and as a result of these actions, the formation and expansion of the innovation ecosystem, in other words, the top, bottom, and middle actors that joined the network. In the figure, events appear in orange boxes, and actors appear in yellow boxes. Since actors joining the network are a derivative of events or actions that have taken place, it is marked by an arrow. Figure 2 demonstrates the push and pull forces and their impact on the RE implementation in Israel between the years 2007 and 2017. The figure indicates the main events in which middle actors pulled decision-makers to promote policies for the assimilation of RE, and how, respectively, the regulation pushed middle actors to deploy RE facilities. Figure 2 does not include specific actors and events as these are presented in Fig. 1.
In 2002, commitment to the Kyoto protocol and aspiration to become a member of the OECD motivated Israel's government to pass its first decision regarding RE generation. The goals were modest, 5% by 2016 and 10% by 2020 with milestones of at least 2% of RE by 2007, which should increase by an additional percentage every 3 years. These milestones were unrealistic given that no relevant policy or strategic plan were put in place to support them [91] In 2007, 5 years after the milestone of producing 2% RE by 2007 was set, the Israeli Government made no progress: no RE infrastructure had been developed, no quotas nor FiT have been set and no policies were issued to push RE generation [91]. In addition, the planning and construction system in Israel is the most centralized of all OECD countries. It is weighed heavily on the construction of RE facilities with lengthy bureaucratic procedures and over-regulation. These constitute significant barriers to the engagement of actors interested in promoting RE and low carbon transition, including Eilat-Eilot [79,80]. With no ability to build RE generation facilities and with the understanding that it is necessary to pull the government to actively promote RE, Eilat-Eilot initiated and hosted the first Eilat-Eilot International Conference in mid-2007 with the title 'Sustainable energy as a lever for regional development' . Three hundred participants attended the conference, which discussed Israel's RE policy, the available RE technologies in the region, as well as the barriers to RE implementation. The conference increased the visibility of Eilat-Eilot and raised awareness of the sustainable energy-related activities that were taking place in the region. Among the conference participants were the EU ambassador, decision-makers from the Ministry of Energy, energy experts from academia, and entrepreneurial companies. In addition to the conference, Eilat-Eilot, together with commercial companies, intensively lobbied within the parliament and government offices to pull the regulator to approve land allocation for medium and large RE facilities, to support RE pilot and demonstration projects, and to issue a governmental tender for the founding of a RE technology incubator in the Arava region.
Pulled by the Eilat-Eilot lobby, two governmental decisions were accepted during the years 2008-2009. The first was to issue a tender for the establishment of a RE technology incubator in the Negev and the Arava. The second decision was the recognition of the southern region of Israel as an area of national priority for the construction of RE generation facilities, with a specific reference to Eilot Regional Council. Pushed by Government's recognition, even though the Electricity Authority had not yet issued quotas for RE production, a local RE company (Arava Power Company, hereafter APC) signed collaboration agreements with 15 local Kibbutzim in the Negev and the Arava for the construction of RE facilities, with the support of Eilat-Eilot, which continued to pull the planning institutions for land allocation and the Electricity Authority for tariff regulation. These new stakeholders-the company and Kibbutzim-joined the Eilat-Eilot RE network, which grew and increased its ability to implement RE generation.
By the end of 2009, APC was granted the first license in Israel to build a 4 MW solar PV field. In addition, pulled by the pressure to promote RE, the Electricity Authority approved three grid-connection licenses for an innovative RE pilot and demonstration facilities. Two of these are biogas plants located in northern Israel that produce electricity from organic waste, and the third is the first thermo-solar generation facility located in the Southern Arava. The thermo-solar pilot was pushed for implementation by the collaboration of the founding company, the kibbutz in whose territory the pilot was built, and which consumed the electricity generated from the system and Eilat-Eilot. The pilot occupies two dunams with 30 consecutive mirrors (heliostats) and a 30-m sun tower. The FiT for pilot and demonstration facilities did not cover all the production costs, and this was a small-scale and unprofitable facility (producing electricity for about 70 households). However, it enabled the presentation of a valid 'proof of concept' project to potential customers worldwide, while strengthening the region's branding as a center for innovation.
Three major milestones were achieved by Eilat-Eilot in 2010, each expanded the network of actors which was created in the region and contributed to the RE implementation capabilities and the evolving RE innovation ecosystem: First, pushed by the governmental tender for the establishment of a RE technology incubator, Eilat-Eilot established 'Capital Nature' , an investment company aimed to nurture early-stage ventures with innovative sustainable technologies that address global challenges. By pulling other middle actors to be part of 'Capital Nature' , its shareholders include well-established companies from the Israeli defense industry (such as Elbit and Refael), in addition to a large and well-known Israeli law firm, academic institutions from the southern part of the country (such as the Ben-Gurion University), venture capital funds, and the Eilot regional council and Eilat municipality. That year, 'Capital Nature' won the governmental tender for the establishment and management of the RE technology incubator in the Eilot Regional Council.
Second, APC's plan for the construction of the first large solar PV facility in Israel (40 MW) in the Arava was submitted for statutory approval, although no official quota had yet been issued. Acknowledging that statutory procedures and the publication of quotas by the Electricity Authority are two lengthy bureaucratic procedures, APC assumed that both would be approved at the same time, and thus construction could begin. This act by APC, backed by the Eilat-Eilot RE network, pulled the Electricity Authority to allocate quotas for large PV facilities.
Third, the Eilat-Eilot RE Conference was selected by the European Commission as one of the most influential conferences in the world and was included in the ECO4B project that supported international RE conferences in Spain, Slovenia, Bulgaria, and Italy from 2010 to 2011. The Eilat-Eilot conference received funding to subsidize the participation of high-profile delegations of investors, entrepreneurs, and large business entities, to create new networks and identify potential partnerships. This recognition increased the visibility and credibility of Eilat-Eilot to Israeli policymakers and the public and emphasized its uniqueness in the energy landscape, which was still heavily dominated by policies that support fossil fuel systems. The recognition helped Eilat-Eilot to reinforce its RE agenda and to promote a low carbon energy transition.
In 2011, Eilat-Eilot celebrated the operation of the first 5 MW solar field in Israel, within the Southern Arava, which provided 3% of the total regional electricity consumption. Later that year, a first Governmental resolution set quotas for the production of renewable energy from solar energy, wind, biomass, biogas and waste, establishing a supportive policy for the deployment of RE. In 2012, pushed by the financial support from the Ministry of Energy and the Ministry of Economy, 'Capital Nature' inaugurated the first RE technology incubator in Israel, in the Eilot Regional Council. Clean-tech and energy-tech start-ups that applied to the incubator were committed to operating in the Arava for 2 years, during which they received funding, provided with workspace free of charge, and access to laboratories. Capital Nature's experts provided guidance and mentoring services to the start-ups, assisted in identifying business opportunities, and established connections with potential investors. The incubator promoted various collaborations between the commercial sector and academic research institutions, thus extending and bolstering the network of stakeholders while increasing its technological and financial capacities to foster innovation.
During this period, an experimental Off-grid Park was launched to test and demonstrate the applicability of various innovative technologies. The Park provided small and medium-sized enterprises (SMEs) the opportunity to prove the feasibility of technologies to support self-sufficiency and off-grid living.
In 2014, followed by the increase of RE quotas issued by the Electricity Authority, six solar fields in the Southern Arava were connected to the grid, in partnership with major international companies, among them EDF and Siemens. These events pushed more investors to the growing network and further promoted the regional and national low-carbon energy system. Many public buildings in Eilat and Eilot were covered with solar PV panels and several Kibbutzim installed solar PV systems over the roofs of farm facilities, cowsheds, and communal buildings. At the end of this year, a total of 70 MW of RE energy facilities in the Southern Arava provided 35% of the total consumption of the Eilat and Eilot area and were responsible for 12% of national RE production. The government set milestone of 5% RE by 2014 was unmet, with only 590 MW of RE installed, providing less than 2% of the national consumption.
In 2015, a 40 MW solar field in the region was connected to the grid, increasing Eilat-Eilot installed RE capacity to 100 MW, which provided approximately 60% of the region's consumption. Adhering to its energy innovation vision, the incubator accepted companies that developed solutions for energy storage, off-grid technologies, and PV panel-cleaning robots to cope with desert dust. Pushed by the local low carbon vision, the city of Eilat won an EU grant and joined the "Green Neighborhoods" project that focused on reducing energy demand. Engaging the public in the low carbon transition added to the Eilat-Eilot goals the concept of a carbon-free city.
During this year, Eilat also joined the 'Global Covenant of Mayors for Climate & Energy' , a global alliance for city climate leadership, and voluntarily committed to implementing the EU climate and energy objectives on its territory.
In 2016, the largest tender to date for the construction of a 60 MW solar facility in Timna, the ancient mines in the Arava, was completed. Unlike other tenders managed by the Ministry of Energy, this tender involved the Israel Land Authority, because all the applicants also submitted bid for the land lease. Though the tender was supposed to be launched 7 years earlier, it was postponed several times due to various objections coming from the Ministry of Finance, land allocation bureaucracy and procedures, delays in the work of the Electricity Authority, and four government changes. The price paid for the land was unprecedented, and Eilot Regional Council received a substantial share of it in exchange for the land. Most of the money was used to build a new off-grid elementary school. The use of RE revenues for the benefit of the public provided evidence that RE is a sustainable tool for regional development. During this year, the State of Israel ratified the Paris Agreement. While the modest commitment set in 2009 to produce 10% RE in 2020 was left unchanged, Israel added a new target of 17% RE generation by 2030.
By 2017 Eilat-Eilot reached the milestone of 122 MW of RE installed capacity, which provided 70% of the region's electricity consumption. However, the southern transmission infrastructure could no longer absorb any additional electricity production, hence it was not possible at this stage to construct additional large and medium solar facilities.
Following its vision to become a worldwide knowledge hub for the clean-tech sector, Eilat-Eilot established a professional training center, which hosts academic courses for undergraduate and graduate students in collaboration with the leading universities of Israel. Expanding the network to include students, lecturers, and researchers that discuss energy policy further pushed policymakers, investors, and businesses in promoting a low carbon transition. It also enriched the RE innovation ecosystem with young people and non-local actors and increased the network's range of influence.
In 2018, to make solar production accessible to residents, the city of Eilat collaborated with a startup from 'Capital Nature' incubator in developing an application that provides residents with information regarding the feasibility and cost of installing solar panels on their roofs. With the financial support from the Israeli Innovation Authority, a software was developed to collect data from maps, photos, and weather forecast algorithms to evaluate the potential of solar electricity production on building rooftops, and to assess the financial viability in terms of economic savings and revenues. In addition, Eilat municipality issued a tender for rooftop solar system installers to provide residents with reliable suppliers that offer affordable financing options. Eilat was the first local government in Israel to simplify RE implementation by accessible means, thus pushing its residents to become active members in promoting regional energy self-sufficiency.
In 2020, pulled by Municipalities' pressure, the Ministries of Energy, Interior, and Environmental Protection published a "Guide to Installing Photovoltaic Systems in Local Government Assets". The guide referred to the order of operations, the mapping of a local government's potential for solar installation, and relevant economic models. Given the strategic need to achieve government RE goals, while acknowledging the experience collected over the years in the Southern Arava, Eilat-Eilot with the Federation of Local Authorities pulled the Ministry of Energy to support the initiation of a practical course to be given at the Eilat-Eilot training center. The main purpose of the course was to assist local governments to follow the guide and to provide tools for creating local sustainable strategies to promote social resilience. Officials from more than 20 local municipalities who participated in the course became agents of change within their municipality and joined the Eilat-Eilot vision while extending the RE network.
Connecting the additional 60 MW solar facility in Timna at the end of 2020, brought Eilat-Eilot to a total of 190 MW RE capacity. This amount accounted for 10% of the national RE production and enabled Eilat-Eilot to meet its goal of providing 100% of the regional electricity consumption by RE during the daytime. Israel, however, did not meet its target of 10% RE. Despite that, it updated its RE production target from 17 to 30% by 2030, with a milestone of 20% by 2025.
In 2021, pushed by the Ministry of Energy's call for funding energy storage pilots, a partnership was formed between a Kibbutz in the region and a company from the 'Capital Nature' incubator. At the end of the year, a pilot of a 1 MW compressed air storage system in the Arava had been constructed and tested. Committed to the target of becoming energy self-sufficient by 2025, the city of Eilat and the Eilot Region Council published a call for experts to obtain knowledge regarding solar energy storage technologies. The two municipalities, via Eilat-Eilot, are developing several projects to promote off-grid public buildings in their territories. In addition, the feasibility of developing a regional macro-grid (a separated southern electricity grid) is being examined in collaboration with the Ministry of Energy.

Discussion
This research followed the leading role that one middle actor-Eilat-Eilot-played in weaving a network of actors that aims to promote local sustainable development to achieve social and economic regional resilience. The analysis linked between Eilat-Eilot's establishment, development, and vision, the actions it took to accomplish its goals, the relations, and connections it formed with other actors, and the impact they had on the design and implementation of Israel's energy policy.
We applied a socio-technical perspective to the concepts of push and pull to determine the factors and actions that promoted RE supporting activities. We demonstrated how top actors (Government ministries, regulators) were pulled by actors to increase their levels of interest and engagement in promoting RE by proposing policies, legislation, and supportive regulation, and how other middle (organizations, firms, local entrepreneurs, local governments) and bottom actors (citizens and endusers) were pushed by both top and middle actors to implement RE technologies. The analysis reflects how the push and pull forces can be expressed by social means, such as lobbying or call for action, and be influenced by public needs, social impact, and political agenda.
The findings demonstrate the middle actors' capacity to link top actors (the Innovation Authority, government ministries), middle actors (venture capital, law firms, academic institutions, high-tech companies, entrepreneurs, start-ups, and municipalities), and bottom actors (local settlements) with diverse interests in complex yet meaningful interactions, thus creating an actors' network. The unique contribution of this study is the tracing of middle-middle connections and the creation of an innovation ecosystem. Though an ecosystem consists of actors of all levels (top, middle and bottom), the establishment of regulation and supporting RE policies is a derivative of push and pull forces between top and middle actors, therefore there is a broader reference to these interactions. However, other MOP studies have dealt extensively with the impact of middle actors on communities and end-users, providing a theoretical basis for this study [48,56,57,59]. The findings also highlight the central role that Eilat-Eilot played in adding actors to the RE network, establishing the RE innovation ecosystem, and shaping Israel's energy policy. However, as the network grew and more actors joined, the importance and significance of any single actor in it, including that of Eilat-Eilot, had diminished. Strong innovation ecosystems can function even if some actors cease to act in them, even if these actors were once crucial. The reduced significance of Eilat-Eilot in today's networks signals that the ecosystem that was weaved is healthy. It is also expressed in the decline of push and pull forces for two reasons: first, the more actors there are, the relationships between them become more complex, and the harder it is to pinpoint the forces behind the actions. Second, the growth and expansion of a successful ecosystem generates motivation for actors to act. These findings fit well with the innovation literature notion that innovation emerges in co-evolutionary interactions between diverse actors and various needs for change [92]. They also support the notion that innovation ecosystems fulfill various purposes, such as knowledge sharing, idea development, access to financial resources, or approach to new markets, and are not restricted to one sector or specific technology [93]. Findings from this study also support other theories focusing on innovation systems by showing how local entrepreneurship can diffuse capabilities and facilitates market formation, and how local innovation is the most suitable to address local problems and offer feasible solutions [94,95].
This research refers briefly to future RE technologies such as microgrids, smart metering, demand response services, and electric transportation. No doubt that in the future smart and digitized solutions would be more prominent and significant in the innovation ecosystems. Based on the insights provided here it would be interesting to explore what new and traditional roles middle actors may play in the grid 2.0 [96][97][98].
While this case study follows a single actor for over 20 years and highlighted its crucial contribution to RE in Israel, we do not argue that this actor was the only one who pushed and promoted it. During this long period, other factors have affected RE in Israel. No doubt, global changes such as technological improvements, declining prices, and evolving regulations, as well as changes in personnel in key positions in the Israeli governing bodies and the branding of Israel as a start-up nation, provided further push to RE in Israel and contributed to the shaping of national policies. Since these are complex processes affected by local and global politics and market forces that require an in-depth review and analysis, therefore we found them beyond the scope of this research.
Though this research highlights how a middle actor is using its connections and resources in efforts to promote a transition, one can imagine how middle actors with different agenda can deny other actors' access to the network, cause conflicts or limit competition. Further research about the negative impacts middle actors could have on the creation of networks and disruption of policy implementation would be interesting and highly useful (see [54]).
In the current state of affairs, it is unlikely that Israel will meet its 2030 RE production targets unless major action is taken. Often, large-scale actions are thwarted by policies at the national level. This happens because policymakers tend to keep actors such as local governments unengaged, which makes them unable to implement policies in an adequate manner [99]. Decentralization and a deliberate delegation of power from the central government to networks of actors that include middle actors with various enabling capabilities would likely increase the number of engaged stakeholders and improve implementation rates.
While this research presents a case study from Israel, its insights are relevant to other countries. Nearly half of the European continent is considered rural (mostly Eastern EU countries) and is identified as lacking job opportunities and public services, as well as access to health care services, and good education [100]. Place-based innovation promoted by the new EU Green Deal and the pursuit of establishing energy communities relies on local governance to drive regional and local innovation to enhance sustainable growth and increase regional resilience [49,101]. Middle actors at the local level often have the capacity to strengthen relationships among actors, lead change, exchange knowledge and pave the way for professional collaborations and innovation networks that involve community members. These networks have the potential to lead innovative solutions for problems related to public health, energy and water storage, climate resiliency, initiate research, encourage investments, create employment possibilities, and promote regional sustainable development.

Conclusions
This paper analyzes the case of Israel's RE innovation ecosystem creation through the lens of the Middle-Out Perspective. It applies a socio-technical interpretation to the push and pull terminology and demonstrates how middle actors push the implementation of RE technologies in Israel, and at the same time pull decision-makers and other actors to promote the low carbon transition. The push and pull forces and the interactions between actors lead to the engagement of new stakeholders in the innovation network, the adoption of more ambitious RE targets and supporting policies, and the creation of an effective RE innovation ecosystem.