Sphere Solar Energy
Custom solar, EV charging, and battery storage solutions for hundreds of Washington homeowners
11+
Years in Business
30
Customer Reviews
50 mi
Service Area
1-10
Employees
SurgePV Score
About Sphere Solar Energy
Sphere Solar Energy is a Seattle-based solar installation company founded in 2015 by Edwin Wanji. Located at 9520 Roosevelt Way NE in Seattle, the company designs and installs custom solar PV systems, EV charging stations, and battery storage solutions for residential and commercial clients across Washington State.
The founder grew up in Kenya and saw firsthand how clean energy technology can improve the prospects of communities. That experience drives the company’s mission to make solar energy accessible and affordable for homeowners in the Pacific Northwest. Sphere Solar Energy handles every stage of a project from initial design through installation and commissioning.
Sphere Solar Energy holds a 5.0-star rating on HomeAdvisor and ranks in the top 3% of Washington licensed contractors according to BuildZoom, with a score of 112 out of 128,670 contractors evaluated. Customers praise the company’s professionalism, quality of work, and responsive customer service.
Service Area
Sphere Solar Energy serves the following areas within a 50-mile radius:
Contact Information
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Services Offered
Partner Manufacturers
Warranty Coverage
25 years
25 years
10 years
What to Expect: Solar Installation Process
Initial Consultation
Free site survey and system design
Quote & Design
Detailed proposal with costs and savings
Installation
Panels, inverter, and wiring (1-3 days)
Inspection
City inspection and utility interconnection approval
Go Live
Utility grants PTO, system goes live
Customer Reviews
5
30 reviews
Roosevelt Homeowner
Sphere Solar was professional and thorough from start to finish. The system was designed to maximize our roof space and has been performing great.
Greenwood Customer
Edwin and his team did outstanding work. Very knowledgeable about the technology, responsive to questions, and the installation was clean and efficient.
North Seattle Resident
Great experience from consultation to final commissioning. Fair pricing and quality workmanship. Would recommend to anyone considering solar.
Frequently Asked Questions About Sphere Solar Energy
What services does Sphere Solar Energy offer?
Sphere Solar Energy offers Solar Installation, Battery Storage, EV Charging.
Is Sphere Solar Energy NABCEP certified?
Sphere Solar Energy holds the following certifications: None listed. Contact them directly for the latest accreditation details.
What areas does Sphere Solar Energy serve?
Sphere Solar Energy serves Seattle, Bellevue, Kirkland, Redmond. They are based in Seattle with a service radius of 80 km.
What warranty does Sphere Solar Energy offer?
Sphere Solar Energy offers 25-year panel warranty, 25-year inverter warranty, and 10-year installation/workmanship warranty.
How are Sphere Solar Energy's customer reviews?
Sphere Solar Energy has a 5/5 rating based on 30 customer reviews. Customers consistently rate them highly.
How long has Sphere Solar Energy been in business?
Sphere Solar Energy was founded in 2015 and has been in business for 11 years. They are one of the more experienced solar installers in their area.
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