Curious where you are roughly located; Does that 80% include the distribution of the electricity?
Should I interpret the 20-25% returns as being, your annual savings on the utility bill are 20-25% of the cost of your PV install?
Should I interpret the 20-25% returns as being, your annual savings on the utility bill are 20-25% of the cost of your PV install?
Roughly speaking the electricity is about €0.06 with about €0.20 in taxes on top. So offsetting consumption nets me about €0.26 cents per kWh.
The installation of a 2800kWp system cost me about €2600 and generates between 2400-2750kWh annually, so about €650 euro. In a 10 year timespan that’s an IRR of 20%, creeping up to 25% for 20 years.
After the first year of having PV, I determined my own payoff time of about 5-7 years, so that was nice and self-justifying, and haven't dug deeper into details on that.
Did you DIY your install?