Western Washington’s Solar Experts,
Working for You
No sales commissions, no guesswork. We deliver western washington solar installation engineered to your specific home, not a one-size-fits-all pitch.
Solphos vs. the Status Quo
See how our western washington solar installation compares, point by point, with a typical installer.
LiDAR Precision — No Guesswork
We use LiDAR satellite data to map your roof’s exact shading, pitch, and sun exposure — producing a production estimate accurate to within 5%.
- ✓ True-to-life shading analysis
- ✓ Panel layout optimized per square foot
- ✓ Fast, LiDAR-based proposal turnaround
Zero Commission. 100% Goes to Your Solar.
Traditional solar companies pay sales reps 15–30% commission. We’re owner-operated — so every dollar you invest goes toward equipment, installation, and your ROI.
- ✓ No door-to-door reps or telemarketing
- ✓ Fixed all-inclusive pricing
- ✓ Owner involved in every project
Western Washington Solar Installation, Built for the PNW
Seattle and the Eastside get more solar hours than most people think. Our systems are sized and angled to capture every one — because we know Puget Sound weather.
- ✓ Optimized for Pacific Northwest climate
- ✓ Systems sized for maximum annual output
- ✓ Local installer — not a national chain
How It Works
From your first call to first power — four steps.
“Best Solar Company in Seattle! We had a fantastic experience with Solphos! Their installers were punctual, and their customer service was top-notch. The solar panels are performing beyond our expectations, and we’re already seeing a reduction in our energy bills.”
— Julian Yuh
Google Review
“Professional and fast solar installation. From the consultation to installation, Solphos exceeded my expectations. They made sure every detail was handled, and the installation was quick and seamless.”
— Fernando Salc.
Google Review
Premium Equipment, Proven Results
We install only what we’d put on our own homes.
Homeowner FAQ
The questions we hear most — answered honestly.
Does solar actually work in Seattle’s cloudy climate?+
Yes — solar works on diffuse light, not just direct sunlight. Seattle averages 3.5–4.5 peak sun hours per day, and modern panels perform well under overcast skies. Many of our customers offset 80–100% of their annual electricity use.
How much does a typical home solar system cost?+
Most Western Washington systems range from $18,000–$35,000. Our proposals give you an exact number for your home — no obligation. See our full cost breakdown →
What solar incentives are available in Washington?+
Washington homeowners benefit from two meaningful incentives: a 6.5% state sales tax exemption on solar equipment and installation costs, and net metering through Puget Sound Energy—excess power you send to the grid earns bill credits. On a typical 10 kW system, the sales tax exemption saves $1,500–$2,000 upfront at no extra step. See how net metering works →
How long does installation take?+
Physical installation is 1–2 days. Permitting and utility interconnection add 4–8 weeks depending on your city and utility. We handle all of that — your job is to say yes, then flip the switch when we’re done. See our full installation process →
Will solar increase my home’s value?+
Studies consistently show solar adds 3–4% to home value. In Washington state, solar is also exempt from the property tax assessment that normally follows home improvements — your taxes don’t go up when your home value does.
Do I need a battery with solar?+
Not necessarily. Most customers use net metering — excess power goes to the grid and you earn credits. Batteries make sense for backup power during outages or to maximize self-sufficiency. We’ll cover both options in your proposal. See Battery Backup →
Ready to See What Solar Can Do for Your Home?
Get a free proposal tailored to your roof, your usage, and your goals — the first step toward your own western washington solar installation. No pressure, just honest numbers.
