Washington Solar Company Rankings — – 2026

Sunergy Systems

Sunergy Systems has been a Seattle-based solar installer for 21 years, making them one of the longest-operating dedicated solar companies in the Pacific Northwest. Their NABCEP certification and two decades of experience installing solar in Washington's famously overcast climate give them a depth of regional expertise that newer entrants to the market cannot replicate. Designing productive solar systems in the Pacific Northwest requires a fundamentally different approach than in sunbelt states, and Sunergy's track record demonstrates they have mastered the nuances of Northwest solar design. The company's 4.9-star Google rating from 239 reviews reflects consistent customer satisfaction across hundreds of installations in a market that demands careful system design to maximize returns. Customer feedback frequently highlights Sunergy's realistic production estimates, a critical factor in a region where overpromising solar output can lead to customer disappointment. Their willingness to set honest expectations rather than inflate projections to close sales is a quality that reviewers consistently appreciate. Sunergy Systems serves homeowners across the greater Seattle metropolitan area, including Bellevue, Tacoma, Everett, and surrounding communities. Their familiarity with Puget Sound Energy and Seattle City Light interconnection processes, as well as Washington state's renewable energy incentives, streamlines the permitting and activation timeline. Washington's net metering policies and state production incentives make solar economically viable despite lower annual irradiance than southern states, and Sunergy's ability to accurately model these financial returns helps homeowners make informed decisions. Their 21-year operating history spans the entire modern era of residential solar in Washington state, from the early days of expensive, low-efficiency panels through today's high-efficiency modules and battery storage integration. That institutional knowledge means their design team has seen how thousands of systems perform over time in Seattle's specific climate conditions, informing equipment recommendations and design practices that are grounded in real-world local data rather than manufacturer spec sheets alone. With a composite score of 81.97 out of 100, Sunergy Systems holds the second-ranked position in Washington for 2026.