Your choices:
1 Comfortable indoor climate; 2 Local cooling (ind house); 3 Wind
| What is your resource? | What do you want to deliver? | What is the service the customer wants? |
| Biomass (digestible sludge) | District cooling | 1 Comfortable indoor climate |
| Biomass (fermentable sludge) | District heating | Electricity |
| Biomass (solid) | Electricity | Process cooling (< 0 °C) |
| Geothermal | Fuel: Gaseous | Process heat/steam (50 - 150 °C) |
| Sunshine | Fuel: Liquid | Process heat (150 - 1000 °C) |
| Water | Fuel: Solid | Process heat (> 1000 °C) |
| 3 Wind | 2 Local cooling (ind. house) | Transport |
| Residual oils/fats etc | Local heating (ind. house) |
Wind power come in all sizes from small, garden-sized generators with a power capacity of one to a few kW and up to giants more than 100 m high and with a power output of 5 MW.
For a small-scale installation where the energy produced is less than the energy used in a single household and where the generator is connected to the building electricity net at 230 V, then the net effect of the wind generator becomes a saving for the individual house owner and also for the grid.
Depending on the local wind conditions, an individual house wind-mill may well contribute enough to compensate for the marginal electricity needed for comfort cooling.