15 Best Solar Companies in Mill Valley, CA (2024 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Mill Valley based on:

  • Customer review scores
  • Service area for Mill Valley, CA
  • Company policies and services offered
  • Accreditations and certifications

Average Mill Valley homeowner saves $2,674/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated June 24, 2024

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in Mill Valley

Finding the best solar panel installation company for your home is an important decision, but it's one that can reap a lot of rewards in Mill Valley. Luckily, Mill Valley residents have tons of the best solar companies in the country, providing amazing value for generating renewable energy.


In this article, we’ll let you in on the top Mill Valley solar installers so you can make the best decision for your home’s sustainable energy needs.If you’d like to get free, no-obligation quotes from the top Mill Valley solar installers, you can click the button below to learn more.

Advertisement

Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch Rankings for Solar Companies in Mill Valley

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

SunPower

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Panel Installation

Website: https://us.sunpower.com/
Address: 880 Harbour Way S Suite 600, Richmond, CA 94804
Phone: 5105400550
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Solar Works

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Community Solar Projects
  • Service icon Financing Assistance

Website: http://www.solarworksca.com/
Address: 400c Morris St, Sebastopol, CA 95472
Phone: 7078298282
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Pac Solar Corporation

  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Battery Storage

Website: http://pacsolar.com/
Address: 118 Mitchell Blvd, San Rafael, CA 94903
Phone: 4152998989
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

SolarUnion

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Solar Panel Upgrades

Website: https://www.solarunion.com/
Address: 1700 Montgomery St Suite 108, San Francisco, CA 94111
Phone: 8888156633
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

SolarCraft

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance

Website: http://www.solarcraft.com/
Address: 8 Digital Dr #101, Novato, CA 94949
Phone: 4153827717
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Earthwise Energy

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Consultation

Website: https://www.earthwiseenergysolutions.com/
Address: 1501A San Anselmo Ave, San Anselmo, CA 94960
Phone: 8003966949
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Sun First Solar

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: http://www.sunfirstsolar.com/
Address: 136 Mitchell Blvd, San Rafael, CA 94903
Phone: 4154585870
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Symmetric Energy

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation

Website: https://symmetricenergy.com/contact-us/
Address: 3020 Bridgeway, Sausalito, CA 94965
Phone: 4152573060
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SonoMarin Solar & Electric

  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Consultation
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: http://sonomarinsolar.com/
Address: 675 Idylberry Rd, San Rafael, CA 94903
Phone: 4159855458
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

CivicSolar, Inc

  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://www.civicsolar.com/
Address: 304 12th St #3b, Oakland, CA 94607
Phone: 8004092257
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Ally Electric And Solar Inc

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Tesla Powerwall
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades

Website: http://www.allyelectricandsolar.com/
Address: 855 Marina Bay Pkwy #280, Richmond, CA 94804
Phone: 5105597700
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SolarLine SolarPanals

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Skilled Repairs

Website: https://www.topofthelinesolarpanel.com/
Address: 1266 9th Ave, San Francisco, CA 94122
Phone: 4154068791
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Save a Lot Solar

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Prompt Service Delivery
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Off-Grid Solar Systems
  • Service icon Permit Assistance

Website: https://www.savealotsolar.com/
Address: 1201 Tenth St, Berkeley, CA 94706
Phone: 8338765272
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Quattro Solar, Inc.

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://www.quattrosolar.com/
Address: 25 Hamilton Dr suite d, Novato, CA 94949
Phone: 4153122661
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

GRID Alternatives

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Battery Storage

Website: http://www.gridalternatives.org/
Address: 1171 Ocean Ave UNIT 200, Oakland, CA 94608
Phone: 5107311310

Methodology: How We Ranked the Best Solar Companies in Mill Valley

EcoWatch's solar experts analyzed each solar company in Mill Valley based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Mill Valley


Below are some the criteria we examined specifically for California solar companies

  • Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
  • Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
  • Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
  • Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
  • Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
  • Availability (10%): The bigger the service area, the higher the company will score.
  • Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
  • Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.

The Cost and Benefits of Solar in Mill Valley

While solar panels can save you a good amount of money on energy bills over time, it’s important to consider the startup costs.Some key things that influence the upfront cost and potential savings over time include:

  • Your income and budget: This shapes what type of solar panels you can purchase.
  • Energy consumption: Installing a solar system may be too steep of an investment for households that don’t use too much energy a month.
  • Where your home is: This affects how much sunlight your roof gets, which helps determine how many panels you need.
  • Incentives: One thing that can make your solar project cost less is the solar investment tax credit (ITC), which is a tax credit that lets you deduct from your taxes a percentage of the project cost. You can also save on your utility bills, which can generate an average of $32,000 of savings over 20 years.

Although a solar panel system costs a good chunk of money upfront, it can save you a considerable amount over the lifespan of your panels. The question of how much, though, depends on a number of factors, like the angle of your roof and your current power bills.

Solar Savings Calculator for {{ solarcalc.name }}

For an idea of both how much you could save and impact the environment by installing solar panels, you can test out the calculator below. You can also view our solar panel cost guide for Mill Valley, CA.

{{ solarcalc.time_period|number:0 }} -year savings{{ solarcalc.total_savings()|currency }}
Estimated cost{{ solarcalc.array_cost() | currency }}
Estimated incentives{{ solarcalc.incentive_savings() | currency }}
Payback period{{ solarcalc.payback_period()|number:1 }} years
CO2 emissions prevented{{ solarcalc.CO2_total()|number:0 }} lbs
Miles driven equivalent{{ solarcalc.CO2_total()/0.78|number:0 }} mi
Why leave {{ solarcalc.total_savings()|currency }} on the table? Help the environment and your wallet by switching to solar. GET ESTIMATE

Electricity rate:
{{ solarcalc.elec_cost/10 }} ¢
Shade:
{{ solarcalc.shade }} %
Time period:
{{ solarcalc.time_period }} years
System size:
{{ solarcalc.system_size }} kW
Additional Incentives:
{{ solarcalc.additional_incentives|currency }}

Switching to solar in {{ solarcalc.name }} can save you {{ solarcalc.total_savings() | currency }} over the course of {{ solarcalc.time_period|number:0 }} years.

Solar Incentives in Mill Valley

One of the great things about installing a solar panel system is receiving federal and potentially state incentives.Regardless of what state you live in, you can take advantage of the federal Solar Investment Tax Credit (ITC), which lets you claim 0 of how much you paid for your solar installation on your tax return, lowering the amount of taxes you owe that year. Plus, there may be some state and city incentives that can save you some extra money too. Our article on solar incentives goes over more information on the incentives you can benefit from in Mill Valley.

Environmental Impact of Switching to Solar in Mill Valley

There are lots of reasons to make the switch to solar energy, like saving on electricity bills and helping to lower your carbon footprint.You may be wondering – how much does making the switch help the environment anyway? In Mill Valley, where the energy generation could be cleaner, going solar can have a huge impact on the environment since solar power is an abundant source of clean energy.Because solar panels don’t release carbon dioxide emissions into the atmosphere when producing electricity, they’re a good swap for traditional energy sources. In fact, you could reduce your carbon dioxide emissions by about 50 pounds each year. The good things about solar power are plentiful — just like solar power is! That's why so many homeowners have been happy with using solar energy.

Advertisement

Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch's Mill Valley, CA Solar Company Rankings FAQs

What is the top solar panel installation company in Mill Valley?

In Mill Valley, SunPower is the best local solar company. Our team of experts rates it 4.50 stars, so it's a great choice if you're looking to install solar panels on your home.

Are solar panels really eco-friendly?

Solar panels can be bad for the environment when manufacturers use toxic chemicals when they’re made. Chemicals can make solar panels difficult to recycle safely once they’ve reached the end of their lifespan. Making solar panels uses a lot of energy as well. The energy payback period is about 1 to 4 years.

Are solar panels worth it?

Solar panels need a large upfront investment that will cost you several thousands of dollars, but whether or not solar panels are worth it depends on a collection of factors like the cost of electricity near you and how much direct sunlight your roof gets.

How efficient are solar panels?

Most of the time, solar panels are about 15 to 25% efficient, meaning they can convert that percentage of the sun’s energy into usable electricity.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.