Frequently Asked Questions
Transitioning to solar and battery storage is a smart move for energy independence, though the financial landscape has shifted recently. Here are the most common questions homeowners are asking right now.
1. Do solar panels still work on cloudy or rainy days?
Yes, they do—just with reduced efficiency. Solar panels utilize both direct and diffuse sunlight. On a heavily cloudy day, your system might produce 10% to 25% of its typical output. Rain can actually be a benefit, as it helps wash away dust and debris that might be blocking the cells.
2. How many solar panels do I need to power my home?
For an average American home (using about 10,000–11,000 kWh per year), you typically need 16 to 23 panels. The exact number depends on your roof’s orientation, your local climate, and the wattage of the panels—most modern panels in 2026 are rated at 430W or higher.
3. Can I still get the 30% Federal Tax Credit in 2026?
This depends on how you “own” the system. The direct tax credit for homeowners who buy systems outright (cash or loan) expired at the end of 2025. However, if you choose a Solar Lease or Power Purchase Agreement (PPA), the solar provider can often capture the tax credit and pass the savings on to you through lower monthly payments.
4. How long do solar batteries actually last?
Most lithium-ion solar batteries (like the Tesla Powerwall or Enphase IQ) have a functional lifespan of 10 to 12 years. While they won’t stop working suddenly, their “capacity” (how much energy they can hold) will gradually degrade over time, much like a smartphone battery.
5. Will my solar panels still provide power during a blackout?
Only if you have a battery backup. Standard “grid-tied” solar systems are designed to shut down during a blackout to prevent back-feeding electricity into the grid, which could be dangerous for utility workers. A battery with a “gateway” or “automatic transfer switch” allows your home to operate as an independent “island” during an outage.
