15 Best Solar Companies in Portola Valley, CA (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Portola Valley based on:
Customer review scores- Service area for Portola Valley, CA
- Company policies and services offered
- Accreditations and certifications
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Average Portola Valley homeowner saves $2,557/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Portola Valley
Are you looking for energy freedom in Portola Valley? Installing solar panels can be a rewarding investment since you can take advantage of a lot of benefits when you go solar. After 20 years of offsetting your energy costs with a solar system, you can save about $30,000 on your utility bills.
If you want to start taking advantage of the great amount of perks of solar, we’re here to help you narrow down your options to find the Portola Valley solar installer that’s the right price for you.To start getting free quotes from the best solar companies in Portola Valley, you can click "get quote" below.
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
Best for Leasing
Sunrun
- 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 Portola Valley
SunPower
Informative Resources- Clear Pricing Policy
- Reliable Customer Support
Limited information available on website
Services Offered
Panel Installation- Consultation
- Battery Storage
TN Electrical and Solar Services
- Reliable Customer Support
- Free Quotes
- Clear Pricing Policy
- Informative Resources
- Limited information available on website
Services Offered
- Grid-Tied Solar System
- Battery Storage
- Solar Panel Upgrades
- Panel Installation
- Consultation
- Cleaning and Maintenance
Solar Bill Review
- Free Quotes
- Informative Resources
- Reliable Customer Support
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Panel Installation
- Skilled Repairs
- Battery Storage
- Consultation
Kingdom Solar
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- System Decommissioning
- Cleaning and Maintenance
- Permit Assistance
- Panel Installation
- Battery Storage
- Skilled Repairs
Source Energy
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Financing Assistance
- Panel Installation
Pac Solar Corporation
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- Battery Storage
- Panel Installation
Infinium Solar, Inc.
- Clear Pricing Policy
- Free Quotes
- Informative Resources
- Reliable Customer Support
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Financing Assistance
- Panel Installation
- Solar Carports
- Battery Storage
- System Decommissioning
Allterra Solar
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
- Financing Assistance
- Tesla Powerwall
- Consultation
Got Watts?
- Prompt Service Delivery
- Reliable Customer Support
- Clear Pricing Policy
- Informative Resources
- Limited information available on website
Services Offered
- Battery Storage
- Skilled Repairs
- Financing Assistance
- Solar Panel Upgrades
- Permit Assistance
- Panel Installation
- Cleaning and Maintenance
United Solar Electric
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
- Consultation
- Financing Assistance
Highlight Solar
- Clear Pricing Policy
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Permit Assistance
- Panel Installation
- Financing Assistance
- Battery Storage
Sandbar Solar & Electric
- Free Quotes
- Clear Pricing Policy
- Reliable Customer Support
- Informative Resources
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Financing Assistance
- Consultation
- Panel Installation
- Battery Storage
Your Energy Solutions
- Reliable Customer Support
- Free Quotes
- Clear Pricing Policy
- Informative Resources
- Limited information available on website
Services Offered
- Grid-Tied Solar System
- Cleaning and Maintenance
- Consultation
- Financing Assistance
- Battery Storage
- Panel Installation
NorthStar Solar Inc
- Clear Pricing Policy
- Informative Resources
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Battery Storage
- Panel Installation
Bay Valley Solar Roofing
- Free Quotes
- Informative Resources
- Clear Pricing Policy
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
- Financing Assistance
- Skilled Repairs
Methodology: How We Ranked the Best Solar Companies in Portola Valley
EcoWatch's solar experts analyzed each solar company in Portola 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 Portola 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 Portola Valley
When deciding on a solar company, most homeowners or business owners worry about the costs above all.Some key things that affect the cost and possible savings include:
- Choice of solar panels: The type of solar panels you need will affect your total cost. High-efficiency monocrystalline panels are more expensive upfront but can also save you more money over the lifetime of your system. If you don’t need to maximize efficiency, you can opt for a higher number of more affordable panels.
- Incentives: The federal solar investment tax credit currently allows you to lower your taxes by 0 of the project cost. Your state and city may also have incentives and rebates that you can use. Plus, you can save about $30,000 over 20 years on your utility bills, not including incentives.
- The amount of sunlight your house gets: Due to Portola Valley’s very high amount of average daily sunlight, you should be able to save a lot on your energy bills.
- The cost of energy for you: If your local energy rates are quite high, there's a better chance you'll get a higher return on your investment in a solar panel system. In Portola Valley, you can save an average of $1,538 a month on your electricity bills.
Solar is a profitable investment for most homeowners. You can produce your own electricity instead of paying for it from a utility company and take advantage of solar incentives and rebates, all while helping protect the environment.
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Solar Incentives in Portola Valley
If you’re considering making the switch to solar power, a variety of government incentives and subsidies can dramatically reduce your project costs and speed up the return on your investment.State and city solar incentive programs vary by location and, sometimes, utility company. A lot of states offer rebates for solar power, in addition to the federal solar tax credit. In our article on solar incentives, you can see the incentives you qualify for in Portola Valley.
Environmental Impact of Switching to Solar in Portola Valley
One of the most compelling reasons to embrace solar energy is to cut your reliance on nonrenewable energy sources like burning fossil fuels, which are damaging for the environment.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Portola Valley, though. The more power your household uses, the the more the environment will benefit if you switch to solar as you won’t have to use as much nonrenewable energy.Once you go solar, your carbon footprint can be cut by about 50 pounds each year. As you can see, going solar has so many other perks beyond saving money. One of the most important ones is that you can help save the Earth too.
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
Best for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch's Portola Valley, CA Solar Company Rankings FAQs
Which solar panel installer is the best near me?
The best local solar company in Portola Valley is SunPower, with a rating of 4.50 stars.
What are some of the biggest pros and cons of adopting solar power?
The greatest advantages of solar power are that it can lower or, in some cases, completely cut your electricity bills, improve your home’s value and lower your carbon footprint. The main disadvantages are that solar panels can be pricey to install, you may not save a lot if you don’t use a lot of electricity and whether you can install solar panels depends on your roof configuration.
Are solar panels worth it?
Solar panels can be a beneficial investment for lots of homeowners, but truthfully, they might not be worth it for everyone. If your home doesn't get a lot of direct sunlight or your power bills are already fairly low, solar panels might not be for you.
What is the best type of solar panel?
The different types of solar panels are monocrystalline, polycrystalline and thin-film. Monocrystalline panels are more efficient but also more costly. Polycrystalline panels are cheaper but also less efficient than monocrystalline. Thin-film solar panels are flexible, so they can be used where the other kinds can’t, like on curved surfaces or cars, but they are also less efficient. The best one for you depends on your budget, roof layout and how much efficiency you're looking for.
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.