Question 1

What is the federal solar tax credit in 2026?

Accepted Answer

The Residential Clean Energy Credit allows homeowners to deduct 30% of the gross solar system cost from their federal income tax bill. On a $20,000 system, that's a $6,000 credit. The credit applies to installation and equipment costs and can be carried forward if you don't owe enough tax in year one.

Question 2

How long do solar panels actually last?

Accepted Answer

Most modern solar panels are warrantied for 25 years and have a useful life of 30–40 years. Panel efficiency degrades about 0.5% per year, so a panel rated at 400W in year 1 produces roughly 390W by year 25. This slight degradation is already factored into most installer estimates.

Question 3

Does solar work on cloudy days?

Accepted Answer

Yes — solar panels generate electricity from diffuse daylight, not direct sunlight. Output is reduced 10–25% on overcast days versus bright sunny days, but modern panels are significantly more efficient in low-light conditions than older technology. Most savings estimates already account for local cloud cover patterns.

Question 4

What happens to my solar system if I sell my house?

Accepted Answer

Owned solar systems typically add 3–4% to home resale value according to Zillow research — roughly $10,000–15,000 on a median-priced home. This effectively accelerates your payback period. Leased systems complicate home sales and require transferring the lease to the buyer.

Question 5

Should I install a battery with my solar panels?

Accepted Answer

Home batteries (like Tesla Powerwall) add $8,000–$12,000 and extend your payback period significantly. They make most financial sense in areas with frequent outages, time-of-use electricity rates where evening grid power is expensive, or if your utility doesn't offer net metering credits for excess generation.

Solar Panel Payback Calculator