Frequently asked questions about rooftop solar systems
Here are some questions many homeowners have about solar rooftop systems:
Should I replace my roof before adding panels?
Maybe. Most roofs last about 20 years. If yours is near that age, it makes sense to replace it before you install solar panels. Otherwise, the panels will have to be removed and reinstalled, adding to the cost of the project.
How long will my system last?
Typically, solar panels are guaranteed for 20 to 25 years, the National Renewable Energy Laboratory says. However, it should be noted that panel performance degrades over time, so it may not be as efficient as it gets older.
Will my home’s resale value be hurt if I install solar panels?
Just the opposite. The U.S. Department of Energy says two studies have shown your system will increase the home’s resale value by about $15,000. (This is the reason the Texas property tax exemption is important.)
How can I use electricity at night or on cloudy days?
Photovoltaic panels still generate electricity if clouds partially block the sun, and they don’t require direct sunshine. Systems come with battery storage, too, and most remain connected to the state’s electricity grid, so you’re covered when there’s no sun.