Table 2 Differences between central power plants and wellhead power plants [2, 56]
From: Central versus wellhead power plants in geothermal grid electricity generation
| Â | Parameters | Central power plant | Wellhead power plant |
|---|---|---|---|
1 | Setup period | Takes more than 2Â years to set up | Takes between 3 and 6Â months |
2 | Customization | Not site specific | Customized to specific site conditions |
3 | Number of wells | Fed by multiple steam wells | Normally operate on a single well |
4 | Capacity factor | Higher capacity factor | Lower capacity factor |
5 | Operating efficiency | Higher efficiency | Lower efficiency |
6 | Power evacuation | High voltage | Can use low voltage |
7 | Non-condensable gases | Well dependent | Well dependent |
8 | Flexibility and portability | Not flexible and not portable | Flexible and portable |
9 | Specific steam consumption | Low specific steam consumption | High specific steam consumption |