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Solar Energy Overview

Written by Caitlin Ritchie/

Edited by Hannah Hillson

Last updated 03/02/2023

Get an estimate of solar cost and savings at your home.

Solar energy
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FAQs about solar energy

  • Solar panels are most efficient in direct sunlight, but the SEIA says panels can work in indirect or partial sunlight. If your system is connected to battery storage, it can use the stored energy when output falls below the level you need. You can also draw from the standard electric grid when necessary.

  • According to the Lawrence Berkeley National Laboratory, investing in solar panels for your home can increase the home’s resale value by about $15,000.

  • You should consider your roof’s health and age before buying solar panels. Roofs have an average lifespan of about 20 years. Solar panels can last up to 25 years. If your home’s roof is older, it may be a good idea to replace it or make any repairs before adding solar panels.

  • The National Renewable Energy Laboratory says the average solar panel lifespan is between 25 to 30 years.

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