3 ms·
That's not what my analysis showed. It has a payback period of 5-10 years depending on your assumptions, assuming new construction. Shorter period the more extr
by sdhgaiojfsa 8y ago
That's not what my analysis showed. It has a payback period of 5-10 years depending on your assumptions, assuming new construction. Shorter period the more extreme the climate, longer in places like Norcal. Retrofitting though is a different story (higher cost -> longer payback).
- Retric 8y agoIf your further north compare it to solar hot water heater systems which cost ~3.5k self installed about double for someone else to add it to new construction. Further south solar systems have below your 5-10 year payback period.