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NW Energy Group
5.0(
7
)
Solar Panel InstallSolar Panels For Electric System - Install - For BusinessSolar Panels For Electric System - Repair+1 more

Serving Longview, WA and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"The entire process went very well. They kept me in the loop the entire time. The install went flawless. They were here when they said they would. They were professional. Most of all they help make sure you get all the incentives you qualify for and include a 25 year warranty on everything including labor. I would deff recommend NW Energy Group to whoever is looking into getting solar!"
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+8

Recommended by100%of homeowners
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Solar Panels questions, answered by experts

Yes, it is possible to install solar panels on a tar and gravel roof, but it is not the ideal roofing material for a solar installation. The process requires roof penetrations to install the solar racking system. While installers will seal these penetrations, they still increase the risk of leaks. This risk is higher on tar and gravel roofs, which are often flat. Flat roofs are more prone to leaks than sloped roofs because they can pool water during heavy rain and hold snow for longer periods, exposing the roof to more moisture.

Solar well pumps range from needing 200 watts of power to as much as 12,000 watts for heavy-duty pumps. Since the most common and cost-friendly solar panels are 100-watt panels, you’ll need between two and 12 panels. The average is between two and eight panels for standard pumps. Based on the average cost of solar panels ($1 to $1.50 per watt), you’d pay between $200 and $1,800 for your well pump solar panels—not including installation.

Homeowners replace their solar panels after 25 years. That said, you don’t necessarily need to replace them at the 25-year mark. You’ll notice a declining ability to produce electricity over time. Most homeowners spring for a replacement when they notice their energy bills creeping up to regular levels or when solar panel repairs are extensive, frequent, and no longer economical.

Learn about common solar blockers in your area to determine how often you should wash solar panels and the best cleaning method:

  • Soot: If you have a fireplace, soot can disperse and accumulate on the solar panels.

  • Debris, dirt, and leaves: These natural elements require light cleaning. Being close to trees or living in a desert area can cause more of these to accumulate.

  • Pollen: Areas with a high pollen count require more frequent solar panel cleaning, and sticky plant material requires a deeper cleaning.

  • Bird droppings: Bird droppings are binding and more difficult to remove. Keep this in mind if you live near a lot of surrounding trees. 

The best way to save money on solar panels is to take advantage of federal and state solar incentives. For example, the solar investment tax credit (ITC) offered by the federal government can save 30% of your total—if you can take the entire credit, which is based on income taxes owed—or an average of around $9,000. You can check the Database of State Incentives for Renewables and Efficiency (DSIRE) for state and local incentives that could save you even more.

The Longview, WA homeowners’ guide to solar panel services

From average costs to expert advice, get all the answers you need to get your job done.