In the following the economical benefits for a customer living in a building with Green-Y are emphasized. There are four main scenarios depending on how the hot water for domestic use was provided and if a battery was used or not:
1. Green-Y instead of heat pump boiler + battery
+ 5'800 $
2. Green-Y instead of heat pump boiler
+ 800 $/y
3. Green-Y instead of electric boiler + battery
+ 3'300 $
+ 200 $/y
4. Green-Y instead of electric boiler
+ 1000 $/y
Installation investments for the average household
Green-Y | Size | Specific Costs | Costs |
Power Unit | 5 kWel | 4.5 kWth | 600 $/kWel | 3'000 $ |
300l Watertank | 20 kWhth | 25 $/kWhth | 500 $ |
Pressuretanks | 14 kWhel | 50 $/kWhel | 700 $ |
TOTAL | 4'200 $ |
Battery | Size | Specific Costs | Costs |
Power Unit | 5 kWel | 500 $/kWel | 2'500 $ |
Capacity | 14 kWhel | 285 $/kWhel | 4'000 $ |
TOTAL | 6'500 $ |
Heat pump Boiler | Size | Specific Costs | Costs |
Heat pump | 0.5 kWel | 1.25 kWth | 2'400 $/kWth | 3'000 $ |
300l Watertank | 20 kWhth | 25 $/kWhth | 500 $ |
TOTAL | 3'500 $ |
Electric Boiler |
Size | Specific Costs | Costs |
Power Unit | 5 kWel | 100 $/kWel | 500 $ |
300l Watertank | 20 kWhth | 25 $/kWhth | 500 $ |
TOTAL | 1'000 $ |
Annual electricity bill for the average household
Green-Y | 200 $/y |
Heat pump Boiler + Battery |
200 $/y |
Heat pump Boiler | 1'000 $/y |
Electric Boiler + Battery | 400 $/y |
Electric Boiler | 1'200 $/y |
Additional remarks