Rated 5-Stars on Google and Yelp out of 150+ Reviews

Why Simmitri

Modern Cutting Edge Products

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

We are dedicated to bringing the best solutions to our clients. This means researching the latest technology and learning the pro’s and con’s for our customers, so we can give them a 5-star solution.

Modern, Best-Of-The-Best Systems

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.

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

Power Your Car Or Fleet With The Sun

Advance Roofing Systems

Strongest Roof Warranty In America (GAF)

MicroInverters

Best-In-Class, Optimized Per Panel

Trusted Solar and Roofing for over 30 years!

    
 
 
       Posted on Google  
   
   Stephanie R.G. Edelman 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had a great experience using Simmitri after a previous company went bankrupt. Simmitri folks were responsive, thoughtful and knowledgeable.
  
 
      Posted on Google  
   
   Andrea Goldsmith 
 
 
 
 Trustindex verifies that the original source of the review is Google. Simmitri installed our Enphase solar panels and later our battery system. They did a terrific job.   Our system runs well after three years. They were good to work with. Their office helped us with the California document submission. We are pleased!
  
 
      Posted on Google  
   
   David Martinez 
 
 
 
 Trustindex verifies that the original source of the review is Google. After interviewing 3 solar companies I selected Simmiti for my dolar installation. The planning and submissions to PGE and SCCounty Building were done in a timely manner. The installation crew was superb. The inspector was highly impressed with the installation. Ana, my PM, stayed on all parties to get the final steps of approvals. I highly recommend Simmitri for your solar project. 9/12/2025 I just recently added 6 panels to my system (added e-car) and Pamela at Simmitri handled my project. Communication throughout the project was excellent and the crew, once again were FANTASTIC! Simmitri is a pleasure to work with.
  
 
      Posted on Google  
   
   Denise Tsang 
 
 
 
 Trustindex verifies that the original source of the review is Google. We can say that installing and working with Simmitri was a seamless experience. They did exactly as they say they would. The staff is amazing to work with, especially the Project Manager Pamela Rodriguez and the Sales Manager Lonnie Cory. The installation crew was fast, clean and friendly. All in all, a great experience working with them from the beginning... and continuing. We are so happy with our new system!
  
 
      Posted on Google  
   
   Ben Bartyzel 
 
 
 
 Trustindex verifies that the original source of the review is Google. Simmitri Inc. roofers did an excellent roof replacement for me, they were on time and on budget.  I highly recommend this firm.
  
 
      Posted on Google  
   
   Jerry Suarez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Our project began in 2020 with the construction of our new home. When we were ready for our Solar installation, Jonathan walked us through every step of the way. The installation crew were fast, competent, and thorough. We couldn't have asked for a better experience!!
  
 
      Posted on Google  
   
   Lanard C 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great company....solar appointment was the best I have seen and very informative ...no pressure and very polite approach focusing on my interests and needs.  System was installed and it was a great experience...
  
 
      Posted on Google  
   
   Dylan Nunn 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great experience!
  
 
      Posted on Google  
   
   Steve McShane 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wow! The service and attention to detail that Jonathan and his team provides is astounding. We had a complicated project with a complicated team and every question was answered in a timely fashion. Every one of the reviews I read is spot on. Thank you, Simmitri.

Our Services

Industry-Leading Energy Efficiency for Residential & Commercial

Backed By A Personalized, Accommodating Experience

Solar Energy

We’re picky! We choose highly-efficient American-made solar/roofing products that stand the test of time and look outstanding. Every detail is best-in-class because we only use technology backed by cradle-to-grave manufacturing processes that deliver consistently reliable results.

Energy Storage

Powering your space is complete with a battery backup or a battery storage solution. We provide guidance and installation services to help you pick the right system for your needs.

Roofing Systems

As industry leaders, we offer advanced roof systems with the strongest and safest warranties in America! After decades of experience, our vast knowledge of the roof enables us to effectively analyze and improve efficiencies - turning it into an energy-producing asset.

Explore More About Our Company Identity

Learn More About What Makes Us Special By Visiting The Pages Below

A Personalized Customer Experience

Custom, Detailed Workmanship

Seasoned, Professional Service

Core-Value/Mission-Driven

Active Community Involvement

Request a Quote for Roofing or Solar Energy Today!

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Residential Projects

Commercial Projects