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Avatar for NRG Clean Power
NRG Clean Power
4.6(
51
)

Serving Cotati, CA and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Roberto Sanchez Solar System, I interviewed 4 solar panel companies and I chose NRG because Will was able to explain everything well. He answered all my questions to my complete satisfaction. Friendly and honest, Will made the sales process very smooth and personable. Tiffany helped and coordinated the project to make sure everything goes well. She always got back to my emails and phone calls promptly. Installers completed the solar panels when I was at work. Came home and he solar panels were on the roof. Definitely a nice install and quality work was delivered. Lisa helped out with the financing on the HVAC. She was patient and I believe got me a lower amount that before. Solar edge app is great to use and straight forward. Highly recommended company thanks NRG. I am excited to use my new solar system!"
Rooftop Solar
Solar Installation
Solar Panel Install
Home Solar Install
Solar System Install

+5

9 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Bragg Home Services
Bragg Home Services
5.0(
12
)

Serving Cotati, CA and surrounding areas

Approved

In business since 1968

Free estimates

Warranties offered

For over 56 years Bragg Home Services has specialized in offering residential and light commercial plumbing, heating, and air conditioning services to the residents of Sonoma, Marin, and Napa Counties. At Bragg Home Services we know that our customers expect integrity, excellence, value, and commitment. That’s why at Bragg Home Services we hire only the best people, and use only the best products, offering exceptional value, backed by our lifetime workmanship guarantee. Because at Bragg Home Services, your satisfaction is our number 1 priority.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time8 hrs
Response rate98%
5 neighbors recently requested a quote
Avatar for Sunriver Solar Power Systems
Sunriver Solar Power Systems
5.0(
2
)

Serving Cotati, CA and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"Unfortunately my husband s company is moving us to the midwest. Even though we had a signed contract with Rick and Teresa at Sunriver Solar, they we very understanding and basically told us not to worry about it and to enjoy our next adventure. They even asked if they could help us with any of the moving stuff!!! They are a delight to work with, they do everything, they kept us up to date on what was going on, and, even though we could not work with them, we would highly recommend them. You really cannot go wrong with Sunriver Solar."
Reduce your carbon footpr
Grass Valley Ground Mount
Solar on a workshop
Home Installation
Home Installation

+12

Response time12 hrs
Response rate92%
Recommended by100%of homeowners
Avatar for Northern Pacific Power Systems, Inc.
Northern Pacific Power Systems, Inc.
5.0(
4
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

Here at Northern Pacific Power Systems, Inc., we take great pride in our experience, expertise, quality, and customer service, that we provide to meet the consumer's needs. It is our mission, to provide excellent workmanship and complete customer satisfaction, from start to completion of a project. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Com3
Ground Mount in Vineyard
Standard ground mount
Com1
Large residential ground mount 2

+31

Response time2 days
Response rate86%
Recommended by100%of homeowners
Avatar for Sonoma Coast Electric, Inc
Sonoma Coast Electric, Inc
5.0(
6
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

Sonoma Coast Electric, Inc is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Multimeter Test
100 amp Sub Panel
100 amp Sub Panel
Installing Unistrut
Stripping Wire

+3

Response time1 day
Response rate94%
14 neighbors recently requested a quote
Avatar for Sunrun Inc
Sunrun Inc
5.0(
1
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"The #1 home solar & battery company in America. We know going solar can be complicated. We are here as your expert guide every step of the way. With our customers, we are creating a planet run by the sun. Unrivaled home solar and battery experience\nWith 900,000 homes and counting, no one has more installation expertise.Smart technology\nAn ecosystem of innovative products that put you in control of your home energy needs. Payment solutions for every home\nTailored plans including predictable monthly payments, little-to-no money down, and no-debt options. The Sunrun Guarantee\nThe industry's most comprehensive repairs, maintenance & monitoring program.\n"

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Solar Panels questions, answered by experts

The morning sun can be better for solar panels because it’s often brighter and clearer than the afternoon sun. The brighter the sun, the more energy solar panels produce. The strongest rays occur during midday, which tends to be prime time for solar energy generation. Most homes get a mix of morning and afternoon sunlight.

The best solar-panel mounting system will depend on your property layout, but you’ll typically want to try for south-facing panels to get the most sun. Roof mounting and wall mounting are both popular, but if your well setup is far away from buildings and other structures you can also set up a freestanding aluminum frame to mount your panels.

There are a few great questions to ask a solar contractor or inspector when you speak to them. You’ll probably want to find out about the energy yield and efficiency of your array, ensuring the actual output matches the amount you calculated when installing the array in the first place. It’s also a good idea to find out about any damage or wear and tear on the array and to inquire about how soon you need to make repairs or replacements to essential components.

In most cases, installing solar panels will not void your roof warranty. To keep roof warranties intact, check your written warranty or call the manufacturer to ask about clauses regarding roof penetrations. You can also protect yourself by getting written approval or a modified warranty that specifically allows the solar installation type you’re planning. Then, hire a professional solar installer that follows roofing manufacturer instructions and protects the roof during installation.

Solar panels should get at least four to six hours of direct sunlight daily. It’s even better if sunlight reaches panels between the peak hours of 10 a.m. and 3 p.m. This is enough to power a home, depending on your solar system’s size and energy needs. Remember that panels will generate some power under cloudy skies or in the shade, and many systems compensate for lower sun exposure by drawing energy from the grid or battery storage.

The Cotati, CA homeowners’ guide to solar panel services

From average costs to expert advice, get all the answers you need to get your job done.