Warning, IMNAE, so hopefully nomad or some other expert can check my numbers.

Its a matter of angles. Solar Panels produce 100% power when the sun in pointing directly at them. Once the angle becomes too oblique, the output drops fast.
So that rules out much of the morning and the evening.

Then, unless you are on the equator, you have to take your latitude and weather into account.

I am not against Solar, think it is a great tech. Bang for the buck is still low, but improving.

If your goal is conservation, reduce usage with better appliances, better light bulbs, and better habits BEFORE you look at solar. You get more bang for your buck, and when you DO go solar, you need to spend less on panels because you reduced your requirements.

Most Solar Panels run~$5.00/Watt.
Since grid power in the Midwest is $70.00/1,000,000 Watts
(Megawatt) you will need to use that panel a LOOONNNGG time to break even on a cost level...