California Solar Thermal
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Cal Solar Inc promotes solar technology and its dual benefits: environmental and financial. We bring our experience to business owners to maximize financial savings and return on investment. Cal Solar Inc develops multifamily and commercial solar projects throughout California. Our systems reliably deliver low-cost solar energy to businesses and multifamily housing communities.

We are revitalizing the solar industry with the help of Utility Incentive Programs as well as the state and federal legislative push towards renewable energy. Our experienced engineers and installers combined with our post-installation system monitoring, lifetime service, and maintenance provide complete turn-key solutions for all of your solar needs.

Our direct partnerships with both domestic and international manufacturers allows us to offer you the best products and complete solar solutions at the best value. Our LEED-certified engineers will ensure the systems are designed properly and up to current green building code standards.
Services
Trusted Solar resource for Property Owners, Developers, Architects, General Contractors, Engineers, Energy Consultants & LEED Professionals!. Our process begins with a thorough analysis to determine the best solar technology that can be integrated in your building. Our experienced engineers assess the location, structural data, and energy goals to determine the parameters regarding system size, capacity, and cost of installation.
Among the vast array of renewable energies, solar water heating remains today one of the most simple and efficient technologies. Solar water heating systems save customers up to 50-70% of gas expenses, and can achieve rapid payback periods. Basically, you will not use your gas boiler system as often, therefore reducing your gas usage.
For more than 10 years, California Solar Integrators, Inc. (Cal Solar Inc) has developed multi-family and commercial solar projects throughout California. Our systems reliably deliver low-cost solar energy to businesses and multi-family housing communities. We are revitalizing the solar industry with the help of Utility Incentive Programs as well as supporting the state and federal legislative push towards renewable energy.
Reviews (2)
Larry Zhang
Larry Zhang
May 19, 2021
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California Solar Integrators, Inc did my Solar Panel System Installation and handed to us 11/20/2020 and the system worked for a few months. Then the thing started to shut down itself 3 times within the last 6 weeks.
1st time: March 28 to April 12 completely stopped working, took 2 weeks
2nd time: April 28-May 6 completed quit working, took 1 week to fix
3rd time: May 10- today still networking- still not fixed yet
See the attached pictures for details.
The first time they have a guy went there my office manager said that guy seems not knowing what he is doing and he went there 3 times didn
Drone Studios
Drone Studios
Jul 06, 2018
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I had the pleasure of working with CalSolar as a drone specialist on about 30 of their projects across California. I was impressed by the design and layouts of many of the installs, very clean and futuristic especially from an aerial perspective. I would highly recommend CalSolar to any residential or commercial client looking for top notch design. I attached a picture from one of the more impressive installs in San Francisco.