Our sample assumes a 10 KW solar PV installation and installed cost of $3.00 per watt. This keeps the math simple and allows you to estimate your own needs for your own property based upon electric bills.
Cleveland gets on average 4.5 sun hours per day. Using a 10 KW solar PV system one could expect to produce about 12,940 kWh annually, or 1,078 kWh per month which is comfortably over the average home electric usage of 891 kWh for the State. Estimated Annual Savings would be $1,473. At a $30,000 total cost to install your simple payback is in 20 years.
Columbus has just slightly better sun hours at 4.6, which produces 13,065 kWh annually or 1,088 monthly. Estimated annual savings are about $1,537, which gives a payback on a $30,000 install cost of 19 years.
The above payback calculations do not take in to account any incentives, State or Federal. If you want to run your own analysis for your home town feel free to check out how we calculate solar power using PV Watts Database. If you want to learn more about various incentives, all the information you need can be found through the DSIRE database.