Your choices so far:
1 Electricity; 2 Comfortable indoor climate
| What is your resource? | What do you want to deliver? | What is the service the customer wants? |
| Biomass (digestible sludge) | District cooling | 2 Comfortable indoor climate |
| Biomass (fermentable sludge) | District heating | Electricity |
| Biomass (solid) | 1 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) |
| Wind | Local cooling (ind. house) | Transport |
| Residual oils/fats etc | Local heating (ind. house) |
Electricity is the king of energy carriers and should generally not be used for low-exergy purposes such as indoor climate control unless under very special conditions. Such conditions are when the total electricity production occurs at such a small scale that the whole production is accommodated in the annual electricity budget of a single building. In such cases, when the electricity is produced and used in the building and not traded, then there will be no reason to do any major alterations to the internal climate system in the building just to avoid using the electricity in the AC-units.