Trying to do some math, and thinking out-loud; I've run the numbers a few times, and haven't yet found solar to be financially advantageous in PA.
Tesla says I need a 16.32 kW system. $33,000 (plus 9k rebates).
Over the last 3 years I average: 2,400 kWh/month. (No anticipated changes coming up). (Would love a hot tub).
Here in PA, zip 17339, we have fairly cheap power.
ALL IN (not just generation) over the last 3 years: $0.1025 / kWh
I switch generation companies religiously to get the cheapest power.
Anyway, in my zip code with not ideal sunshine and cheap power... is the payback really 10 years?
Price After Incentives $23,185.
Google says: 1,445 hours of usable sunlight per year x 16.32 = 23,582.4 kWh/year. 1,965/month.
After Solar: 435 kWh/month from grid/average.
1965 / 2400 kWh = 80% solar powered house.
Grid Power: $2,952 / year
Solar Offset: $2,361.6 / year
$23,185 / $2,361 = about 10 years
Of course this doesn't account for missed opportunity costs of the $23($32) upfront costs.
I can do better than their 5% loan if I wanted to as well.
So after 10 years, when the panels are "paid for by the reduced electric bill", I just have a super cheap electric bill for life then, at the property.
Am I missing anything? 10 years seems reasonable for ROI for something for the house. Although it's a long time...
At 10 years, saving $2,361/year starts, so 10 years of that is $23,610. 20 year panels.
Tesla says I need a 16.32 kW system. $33,000 (plus 9k rebates).
Over the last 3 years I average: 2,400 kWh/month. (No anticipated changes coming up). (Would love a hot tub).
Here in PA, zip 17339, we have fairly cheap power.
ALL IN (not just generation) over the last 3 years: $0.1025 / kWh
I switch generation companies religiously to get the cheapest power.
Anyway, in my zip code with not ideal sunshine and cheap power... is the payback really 10 years?
Price After Incentives $23,185.
Google says: 1,445 hours of usable sunlight per year x 16.32 = 23,582.4 kWh/year. 1,965/month.
After Solar: 435 kWh/month from grid/average.
1965 / 2400 kWh = 80% solar powered house.
Grid Power: $2,952 / year
Solar Offset: $2,361.6 / year
$23,185 / $2,361 = about 10 years
Of course this doesn't account for missed opportunity costs of the $23($32) upfront costs.
I can do better than their 5% loan if I wanted to as well.
So after 10 years, when the panels are "paid for by the reduced electric bill", I just have a super cheap electric bill for life then, at the property.
Am I missing anything? 10 years seems reasonable for ROI for something for the house. Although it's a long time...
At 10 years, saving $2,361/year starts, so 10 years of that is $23,610. 20 year panels.