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Sphere Solar Energy

Seattle Solar Companies
Ranked #2 in Seattle | Grade B+
4.80 (72 reviews)

Sphere Solar Energy

Sphere Solar Energy is a Seattle solar contractor focused on practical, well-communicated projects from assessment through activation. They handle site evaluation, design, permitting, installation, and monitoring setup for residential and commercial systems.

Why Homeowners Choose This Business

Local experience with Seattle permitting and utility interconnection. Clear step-by-step communication from proposal to activation. Ability to handle standard rooftops and one-off projects that require added coordination.

Service Area

Headquartered in Seattle’s Roosevelt/Maple Leaf area and serving the greater Seattle and Puget Sound region, subject to project scope and scheduling.


How This Business Compares

A quick local comparison based on ranking, review strength, and market visibility.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average for Google rating.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Establishment
  Point Of Interest
  Solar panel installation
  Residential solar
  Commercial solar
  Installations
  Solar design
  PV system monitoring
  Utility interconnection
  Rooftop solar
  Ground-Mount Solar
  Solar incentives guidance
  Solar site assessment
  Microgrid-style solutions
  Solar permitting support

Services include solar feasibility assessments, custom PV system design, roof and ground-mount installation, permitting and utility interconnection support, monitoring setup, and guidance on local, state, and federal incentives.


Recent Reviews

4.80

(Based on 72 reviews)

Customer feedback consistently notes clear communication, helpful education on incentives and the installation process, and courteous crews. Several reviews mention smooth coordination with permitting and interconnection, with one noting some back-and-forth during inspections that the team addressed promptly. Workmanship and final system performance are commonly praised. Overall sentiment is strongly positive across recent years.

Google Review
Tim Thomas on Sphere Solar Energy

If you are looking for solar power for your home or business look no further sphere solar energy is the best choice in the northwest, they are awesome!
A HUGE thank you to Sphere Solar Energy for all of there help with our solar project. Their team of professionals connected with us one-on-one to make sure we understood the entire process.
This project could not have happened without their efforts and expertise. Sphere Solar Energy educated us on the benefits of clean energy and how the whole solar power system works.
Without Sphere Solar Energy, our goal to
lower our carbon footprint and become a leader for community based organizations in Pierce County could not be realized. Thank you Mr. Edwin Wanji and staff

Oasis of Hope Center
1937 S. G st. Tacoma WA, 98405

Google Review
Adam Powers on Sphere Solar Energy

The solar system installation process was an unbelievable experience. Sphere Solar and Edwin Wanji went above and beyond on our project. We asked for their help developing a solar microgrid for an urban farm. The system that Sphere Solar put down was beyond our expectations. Not only did the whole team help walk us through the process of installation, but they also worked with enthusiasm. We plan to energize the farm through the solar energy and storage system. Our goal is to use the energy to power some low-energy equipment such as the water irrigation system fans for a greenhouse which includes our automated robotic gardener, called the FarmBot.

Edwin Wanji, the owner of the company came down himself and he not only installed quality equipment and gear, but also helped teach our community about how it works. Providing so much more than a system, Edwin provided solar education to our community. Edwin taught that the system components were sourced locally in the US. Our solar system was made up of six, 480 watts solar panels and came from the company Hawah Q which is US-based. We learned that the inverter is a solar arc inverter that comes from a veteran-owned and operated US-based company. The battery, which is a home grid system, was also US sourced.

We value locally sourced equipment providers who are integral to the work that we do. We seek to create a local economy and support our local manufacturers. As an urban garden, this also matches what we seek to do in our operations of getting communities to be more sustainable. We want communities to understand their own power and that means their power to grow food and the power to energize their lights. We were even able to throw a big event at the garden where all the musicians and vendors utilized the energy from our new solar system. So we no longer had to use any gas generators and there were no loud engines going during our event.

Thank you Sphere Solar and thank you so much Edwin Wanji for your work on this project. We’re excited to work with you again on our next solar installation.

Google Review
Mark Franklin on Sphere Solar Energy

Edwin, Nigel, Peter, and the team each conducted themselves and their work in a professionally and polite manner. We did have some back and forth with inspections but Edwin and the team were right there to work through it, keeping us in the loop. My rating if I could set it would be more like a 4.5 with that .5 just because of the back and forth with inspections. We ended up missing some prime days of sun light due to it. The inspector was asking for things the team had never seen before but made sense. Example: chicken wire under the panels so kids don't play with the cables, which where zipped tied to the panels and ground mount. Either way our system is up and running and I couldn't be happier with the results. Even on a good fall day we produce much more than we consume. Almost 10kwh more a day. Will definitely reach back out to Edwin and the team in the future when we look to get an electric vehicle charger installed and potentially iron flow or liquid metal battery backup. If they become available for residential use.

Google Review
Chris Whalley on Sphere Solar Energy

My family and I selected Sphere Solar Energy to design, install, and support a 10kW rooftop solar energy system for our North Seattle home. Sphere is hands down the best residential contractor I have ever worked with in any trade, and I have worked with a variety of contractors across Washington state and Montana. Edwin and his team understand the local, state, and federal incentives and building codes that apply to solar energy systems, their system design and component selection is excellent, their estimates of costs and savings are accurate, and their system installation is timely and of high quality. Additionally, their logistics and project management are very high quality and they proactively manage their projects across each phase of the process. Sphere has been extremely responsive to our requests for system support and every employee we encountered, particularly our project manager Wendy and lead installer Gene, were very knowledgeable and able to work through the issues that inevitably come up during any project. Now that our system has been up and running, my family and I are very satisfied with the system's performance and we can't recommend Sphere highly enough. Thanks very much to Edwin, Wendy and the whole crew at Sphere Solar Energy!

Google Review
Pat Riley on Sphere Solar Energy

An average home uses about 12,000kwh annually. But our all-electric home is using over 21,000kwh per year, and the cost just keeps going up. We've replaced our heat-pump, water heater, re-sealed our ducts and re-insulated, but our electric bill still keeps going up. Fortunately our state actually encourages the production of green energy through "production" incentives. Federal tax laws also supports green energy productions in the form of tax credits. Sphere Solar designed a system for us to maximize the incentives while lowering our electric bill. In just two months we've already produced nearly 4,000kwh, and we've "banked" (net metering) nearly 2,000kwh. We've already offset 3.3 tons of greenhouse gas emissions with clean green energy. We expect the system will actually pay for itself in 7.5 years, even with the power rates going up each year. Its hard to describe how satisfying it is to watch your power meter spin backwards.

We are very happy with the system and highly recommend Sphere Solar if you or someone you know is considering a solar system - Pat Riley, University Place, WA.

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Special Offers

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This business may offer free estimates for some services.


Frequently Asked Questions

They design and install grid-tied solar systems for residential and commercial properties. Projects include standard rooftop arrays and more customized builds that may require additional coordination.

After design and permitting, on-site installation for most residential systems usually spans a few days. Timelines can vary based on roof type, equipment availability, and utility inspections.

Yes, they guide customers on applicable incentives and manage the utility interconnection process. Reviewers often mention helpful explanations of local and federal programs.

It depends on roof condition and structure. They assess the site first and may recommend repairs or timing the solar installation with a roof replacement if needed.

Most systems include online production monitoring so you can view performance. The team sets up monitoring during commissioning and explains how to access it.
 Verified Listing

Opening Hours


  • Monday 9:00 AM – 5:00 PM
  • Tuesday 9:00 AM – 5:00 PM
  • Wednesday 9:00 AM – 5:00 PM
  • Thursday 9:00 AM – 5:00 PM
  • Friday 9:00 AM – 5:00 PM
  • Saturday Closed
  • Sunday Closed

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Business Details


Business Rating
4.80 (72 reviews) FeaturedPro Business
Address
9520 Roosevelt Way NE, Seattle, WA 98115
Phone
Business Type
service

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