Re:Plunging costs make solar, wind and battery storage cheap...
by Retric on Monday January 29, 2018 @06:39PM
(#16261625)
First a backup generator is a lot cheaper than a backup grid connection for the next 20 years. Now, some would look at that as an extra cost, but IMO most homes should have an undersized backup in case the grid goes down anyway.
Next installation costs quotes are often insane, but basic equipment costs are not even close to that. A ~10KW system for ~1,600 kWh/month as a reasonable off grid system that's well above most homes normal usage levels and depending on battery power that should be well under 20,000$ before government incentives.
Now, you can start running the numbers on payback periods and whatnot, but it's close enough you need to consider your local rates not just dismiss it out of hand. Sure, you could use fewer panels but panels are only ~1/3 of the system price so no need to scrimp on them.
Next installation costs quotes are often insane, but basic equipment costs are not even close to that. A ~10KW system for ~1,600 kWh/month as a reasonable off grid system that's well above most homes normal usage levels and depending on battery power that should be well under 20,000$ before government incentives.
Now, you can start running the numbers on payback periods and whatnot, but it's close enough you need to consider your local rates not just dismiss it out of hand. Sure, you could use fewer panels but panels are only ~1/3 of the system price so no need to scrimp on them.