Why Simmitri

Modern, Cutting-Edge Products

Modern, Best-Of-The-Best Systems For The Bay Area

High-End Results | Highly-Efficient Products | U.S. Manufacturing

What’s the difference between high-end solar/roofing systems built and installed by Simmitri vs. the average setup? Our systems outperform by 10% to as high as 30%! They also last much longer and require FAR less maintenance, saving you more money over the long run.

We created the first official energy efficiency packages in 2003 and became Building Performance Institute (BPI) certified in 2013. And that’s not all. We also launched the first battery storage program and piloted it with our existing solar customers in 2016. Going further, we developed a solar and roofing certification training program to help contractors get the work done PROPERLY - holistically and personalized around you and your energy needs.

Our Process

Get The Most Out Of Every Detail

Then Stay In Control Of Your System

After decades in this industry, there’s no guesswork involved. We KNOW which products and materials are the best and have the highest performance. With a cradle-to-grave approach and a green mindset, we also care about environmental impact, manufacturing processes, and warranties.

An easy example is the microinverters we work with. We put an inverter on every panel instead of relying on centralized inverters, which are less efficient. This means they can each be optimized. Considered ‘power electronics,’ we can manage everything, see what’s happening remotely using our mobile application, and proactively address any panel or inverter issues.

We also install solar load centers, which most other contractors don’t. This makes your system battery-ready, so you won’t need to rewire everything when you want to add solar. It’s a ready-made building block of efficiency, saving you time and money!

Energy Efficiency

Peak Building Performance

Energy Generation

Most Powerful Solar On The Planet

Battery Storage

Reduce Demand & Back-Up Power

EV Charging Stations

Power Your Car Or Fleet With The Sun

Advanced Roof Systems

Strongest Roof Warranty In America (GAF)


Best-In-Class, Optimized Per Panel

Our Services

Industry-Leading Energy Efficiency For The Bay Area

Backed By A Personalized, Accommodating Experience

The Simmitri Customer Success App

Download Simmitri’s Customer Success app, stay in the know throughout your project's phases, explore your documents and warranty info, and quickly contact the Simmitri team. You can earn rewards through referrals as well. Our app also has built-in 24/7 energy production monitoring, which allows you to review your system's efficiency at the touch of a button.

Smart Energy Storage

We create your microgrid and then provide energy regardless of access to utility power. You can build a stronger microgrid using solar, smart energy storage, and smart devices. Purchased an Enphase battery storage or device? Our team is a certified Enphase Gold Installer.

Customer-Centric Services

Each project is uniquely tailored to our customers and their homes to create the best energy solutions. Get everything you need and nothing you don't. Expect zero upselling and unnecessary add-ons. We'll get you running in no time, and our job isn't over until you’re delighted. Your satisfaction is our delight.


What Other Bay Area Customers Are Saying

“I looked at a few companies before hiring Simmitri for a new roof, gutters, and solar. I’m glad I did! My consultant had amazing patience, was always available to answer questions, and quickly responded. Throughout the process, I dealt with many different individuals who all took pride in the job, and the result was phenomenal. Everyone was responsive from the operations side, and from start to finish, the production team was efficient and polite and worked hard to keep the area clean. The solar install and permit process went great. I can’t believe how quickly the job went and how nice everyone was. I highly recommend Simmitri for your roof, gutter, or solar needs. They’re a family-owned business that really does ‘treat you like family.”

Shannon L.

“Simmitri got the right financing program for my needs, and the entire project was done quickly. Very responsive, clean job, and stellar communication. Something really unique about them is their customer success team, who followed up with me on a regular basis to make sure I was happy and did an annual review of my system compared to their initial projection. I was impressed when I realized their projections were 100% accurate. My system delivered all year despite the smoke and debris from the fires in California. I would recommend them to anyone who needs solar or roofing in the Bay Area.”

Bernard L.

“Great customer service and quick turnaround time from the beginning to the end. The staff and the contractors are excellent, and I would highly recommend Simmitri to everyone. They went above and beyond to make sure everything came together. This is one of the best companies with which I have done business. Thank you for such amazing professionalism!!!’”

Thanh B.