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The average cost of residential solar panels in the US in 2024 is now only $2.90 per watt. This makes a 7 kW system only $14,210 after claiming the federal tax credit. We have developed the home solar cost estimator to calculate the actual amount it will cost to install solar panels on your home based on your electricity use and the current prices of solar providers near you. It also shows monthly payments for $0 money down solar systems.
“Free solar panels” refers to a zero-down solar system where the monthly electric bill savings are more than the monthly solar payment. In this case, you are making a profit without ever having spent any money. These offers are legitimate in states with higher electricity prices and/or strong solar incentives. The estimator will tell you if this is possible for your specific location.
Absolutely. However, you need an electrical contractor’s license as a minimum and in many states, you also need to either have a specific solar license or be a NABCEP-certified installer. Permitting and utility approvals can also be tricky and this is why over 95% of homeowners get a professional solar company to do the whole job.
There is no regular maintenance required on solar panels. You may want to clean them if you live in a climate that does not get rain for long periods or if they are installed on a flat or shallow sloping roof. However, that is about it for regular maintenance.
The average home requires a 7 kW solar system which is 20 x 350-watt panels. However, this varies a lot by state and the amount of electricity you use. The estimator will tell you how many solar panels you need to power your home based on your location and the amount you spend on electricity.
Solar panels last a minimum of 25 years but many premium brands now offer 30-year warranties.
Traditionally most residential solar power systems were simply solar panels and an inverter. You don’t need to store the solar power for night use because net metering laws give you a credit for excess solar you export to the public grid and these credits cover the nighttime power you need to buy. These systems are known as “grid connect” or “grid-tied” solar systems.