Why Valley Solar
Western Massachusetts’ #1 solar installer by volume₁. Every system we install is backed by SunAlert™ proactive monitoring and our 95% Solar Production Guarantee, so you can be confident your system will deliver the results you expect for decades to come.
The Valley Solar Difference
Choosing a solar installer isn’t just about panels — it’s about performance, service and lasting value. Here’s why more homeowners and businesses across Western Mass choose Valley Solar.
Built for Service
Where others treat service as an afterthought, we’ve made it our core business. Our dedicated team monitors and maintains thousands of systems — including many we didn’t install.
Experienced. Local. Capable.
Founded in 2015 and based in Easthampton, MA, Valley Solar builds every project with its own in-house team — designers, electricians, and apprentices. We don’t outsource.
One Partner, Start to Finish
Design, engineering, permitting, installation, and service — all handled in-house by our licensed team. No subcontractors. No handoffs. Complete accountability from day one.
Battery Storage Experts
With over 800 battery systems installed and 30+ ESS certifications held, our in-house team leads Massachusetts in battery storage integrations.
Proven at Scale
Ranked #1 among Massachusetts-based installers for residential solar & battery installation volume in Massachusetts. Local quality plus the efficiency and stability that only scale can bring. (Solar Power World, 2025)
Guaranteed Performance
Every Valley Solar system includes SunAlert™ proactive monitoring and a 95% production guarantee. If your system underproduces, we fix it — and pay you the difference.
OUR APPROACH
How We Design, Install, and Support Systems
Being local matters — but in today’s solar and storage systems, it isn’t enough on its own.
Valley Solar is built to pair local accountability with capabilities not typically associated with local providers. We invest in advanced system design, proactive performance monitoring, rigorous safety training, and long-term service infrastructure as core requirements for systems meant to perform for decades.
The result is a company that delivers local trust and support, backed by the technical depth and operating discipline required to design, install, and stand behind complex solar systems over the long term — and a brand we proudly stand behind in our community.
Our Process
What to Expect When You Go Solar
See how our clear, proven process puts you in control and makes Valley Solar the most trusted solar energy contractor in Western Mass.
- Transparent from day one – no hidden costs or change orders.
- Local expertise – all work handled by Valley Solar’s in-house team.
- Performance guaranteed – rigorous engineering ensures your system delivers as promised.
- Support that lasts – proactive SunAlert monitoring included at no extra cost.
OUR GUARANTEE
Performance You Can Count On
When you choose Valley Solar, you’re not just getting panels on your roof — you’re getting peace of mind. That’s why we back every installation with one of the strongest guarantees in Western Massachusetts.
95% Production Guarantee
- Your system is guaranteed to perform at 95% of projected output for the first two years.
- If it falls short, we pay you for the difference at $0.30 per kWh (up to $800/year).
Installation Warranty
- 25-year equipment warranty to ensure your panels and components keep performing.
- 10-year workmanship and roof protection, so you know your home is in safe hands.
More Than Monitoring
Think of our performance guarantee like a promise — and SunAlert is the reason we can keep it. Most companies just hope their systems perform. We actually watch them. With 24/7 monitoring, automatic alerts, and local technicians ready to act, SunAlert is the behind-the-scenes system that makes our guarantee real. It’s not magic — it’s smart, proactive care built into every Valley Solar installation.
- Included with every new system – no extra cost, just peace of mind built in.
- Always-on protection – 24/7 monitoring keeps your system delivering the power we promise.
- Fast local response – automated case creation ensures quick fixes from the same Valley Solar team who installed your system.
Our Work
Explore Some Of Our Featured Projects
Trusted by Homeowners Across Western MA.
See why thousands of homeowners turn to Valley Solar for expert service, honest guidance, and lasting energy savings.
10+
years serving Western MA
2,000+
solar installations
800+
battery system installations
95%
solar production guarantee
RECOGNIZED BY OUR COMMUNITY
Readers Choice Winner
Best Solar Installer
Advocate Best of the Valley
Best Solar Installer
RECOGNIZED BY OUR CUSTOMERS