I'm separating the two issues relating to my solar battery, to keep things clearer.
The other issue is that I get a rebate of $200 per kWh storage capacity under SGIP, the Self-Generation Incentive Program. Under this program, SoCal Edison, which administers the program, sends me a check. The battery is sold and installed by Semper Solaris, an unrelated company. The SGIP application form says that SoCal Edison "may" send me a form 1099, and the rebate "may" be taxable.
I thought rebates were reductions of cost, not income. Will I need to include the amount of the rebate under income, and if so, where? Under "other income"? Or do I reduce the amount I report on Form 5695 as my cost by the amount of the rebate?
I believe the money ultimately comes from the state. If it matters, I can find out for certain.