Table 9 Description of post-experimental survey items

Motives

For this question you are asked to divide 100 points over 4 motives to become member of an energy cooperative: ecological, social, financial and societal

Ecological motives include climate change, the environment and ecological footprint

Social motives include connectedness with other cooperative members, social cohesion and group membership

Financial motives include minimalising costs of electricity, or interesting investment opportunities

Societal motives include dissatisfaction with current government policy on electricity, or the impact that energy cooperatives can have on society

0–100 for each level (must sum to 100)

Age

What is your age?

18–100

Gender

What is your gender?

Male;

Female;

Other;

Prefer not to say;

Years member

In what year did you become a ‘cooperant’ at X? (when you bought your share)

1991–2022;

I do not remember;

Years client

In what year did you become a client at X (for the supply of electricity)

2003–2022;

I do not remember;

Number shares

How many shares do you own?

1–20;

More than 20;

I do not know;

Prefer not to say;

Income

What is your combined net yearly household income?

0–19.999;

20.000–39.999;

40.000–59.999;

60.000–79.999;

80.000–99.999;

100.000 or more;

Prefer not to say;

Education

What is your highest level of education?

Lower education;

High school;

Graduate school (graduate degree or professional bachelor);

University: bachelor degree;

University: master degree;

Master-after-master or postgraduate degree;

Doctorate / PhD;

Prefer not to say;

Living area

Do you live in a city, village or a more rural area?

Big city;

Suburbs of a big city;

Village or small city;

Village in the countryside;

House on the countryside;

Prefer not to say;

House type

What type of house do you live in?

Apartment;

Terraced house;

Semi-detached building;

Detached building;

Other;

Prefer not to say;

Municipality

In which municipality do you live?

Municipalities of Flanders;

Prefer not to say;

Household size

How many members are there in your household? (incl. children)

1–20;

Electricity use

How many kWh per year do you consume?

Less than 1500 kWh;

1500–1999 kwh;

2000–2499 kwh;

2500–2999 kwh;

3000–3499 kwh;

3500–3999 kwh;

4000 kwh or more;

I don’t know;

Prefer not to say;

Payment type

Do you pay your electricity bill advance from X per one, two or three months?

1–3;

Prefer not to say;

Payment amount

How much is your one- two- or three-monthly electricity bill advance from X?

0–50 Euros;

51–100 Euros;

101–150 Euros;

151–200 Euros;

201–250 Euros;

251–300 Euros;

301–350 Euros;

351–400 Euros;

401–450 Euros;

451–500 Euros;

501–550 Euros;

551–600 Euros;

601–650 Euros;

651–700 Euros;

More than 700 Euros;

I don’t know;

Prefer not to say;

Cooking

Do you use electricity for cooking?

No;

Yes;

Prefer not to say;

Car

Do you have an electric car?

No;

Yes;

Prefer not to say;

Heat pump

Do you have a (hybrid) heat pump?

No;

Yes, hybrid heat pump

Yes, heat pump;

Prefer not to say;

Solar panels

Do you have solar panels?

No;

Yes;

Prefer not to say;