How much does a home solar system cost in 2026?
Most US quotes fall between $2.60 and $3.40 per watt before incentives. A typical 8 kW system costs about $21,000 to $27,000, and a 12 kW system about $31,000 to $40,000. See solar cost in 2026.
Is the 30% federal solar tax credit still available?
Not for homeowner-owned systems. Per the IRS, the Residential Clean Energy Credit doesn't apply to expenditures after December 31, 2025, and an expenditure counts when installation is completed. Leased systems and PPAs can still benefit indirectly because the company owning the system may claim a business credit. See solar incentives.
How long does solar take to pay for itself?
Usually 6 to 16 years in the US, depending mostly on your electricity price and sunshine. High-price states like California, Massachusetts and Hawaii pay back fastest. Check your state.
Do I need a battery?
Only if you want outage backup, your utility pays little for exported power, or you have time-of-use rates with expensive evenings. Otherwise a battery usually lengthens payback. See home batteries explained.
Will solar panels work in a blackout?
Standard grid-tied systems switch off for lineworker safety. You need a battery with backup capability, or a portable power station for small loads. See outage backup.
Can renters use solar?
Yes: plug-in balcony panels where allowed, community solar subscriptions, green power plans, and portable power stations. See solar for renters.
Is plug-in balcony solar legal in the US?
As of October 2026, ten states have plug-in solar laws (Utah, Maine, Virginia, Colorado, Maryland, Connecticut, New Hampshire, Vermont, New Jersey and California), several effective in 2027. Elsewhere, ask your utility first. See the plug-in guide.
How long do panels last?
25 to 30+ years. Output falls about 0.25 to 0.5% a year. Plan to replace a string inverter once, around year 10 to 15.
Do panels need cleaning?
Rarely. Rain cleans most roofs. In dry, dusty areas, an occasional gentle rinse from the ground can recover a few percent. See maintenance.
What happens if I sell my house?
Owned systems transfer with the house and often help it sell. Leases and PPAs must be transferred to the buyer or bought out. See selling a home with solar.
Should I lease or buy?
Buying usually saves the most over 25 years. In 2026, leases and PPAs can look attractive because the system owner can still claim a federal business credit. Watch for escalators. See buy, loan, lease or PPA.
How many panels do I need?
Divide your yearly kWh by (sun hours × 365 × 0.78) to get kW, then divide by the panel wattage. Or use the system size calculator.