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10 Best Solar Companies in Walnut Creek, CA

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Written By David Cusick

Last Updated June 2024

Solar is one of the most easily accessible forms of renewable energy for Walnut Creek homes. Switching to solar energy can allow you to save money and reduce your carbon footprint, but you want to make sure you find a qualified installer. That’s why, after reviewing and analyzing providers, we put together a guide to the most reputable solar companies in Walnut Creek. These installers consistently deliver dependable quality service.

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Top 10 Best Solar Companies in Walnut Creek

SunPower

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880 Harbour Way S Suite 600, Richmond, CA 94804 (510) 540-0550 us.sunpower.com

Free quotes

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Panel installation
Battery storage
Consultation

SunPower by The Solar Quote

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2819 W March Ln #154, Stockton, CA 95219 (888) 944-6765 sunpowerbythesolarquote.com

Free quotes

Informative resources

Clear pricing policy

Prompt service delivery

Reliable customer support

Services Offered

Consultation
Cleaning and maintenance
Grid-tied solar system
Panel installation
Battery storage

Sunrun Solar

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1215 Striker Ave Ste 120, Sacramento, CA 95834 (916) 547-5250 sunrun.com

Reliable customer support

Clear pricing policy

Informative resources

Free quotes

Services Offered

Grid-tied solar system
Financing assistance
Battery storage
Tesla powerwall
Permit assistance
Panel installation
Cleaning and maintenance

Got Watts?

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2045 Commerce Ave, Concord, CA 94520 (925) 421-0411 gotwatts.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Informative resources

Services Offered

Skilled repairs
Battery storage
Financing assistance
Permit assistance
Solar panel upgrades
Cleaning and maintenance
Panel installation

Green Air and Solar

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3953 Industrial Way, Concord, CA 94520 (925) 284-7336 gogreenair.net

Clear pricing policy

Reliable customer support

Informative resources

Free quotes

Prompt service delivery

Services Offered

Cleaning and maintenance
Battery storage
Consultation
Skilled repairs
Panel installation
Financing assistance

HCI SOLAR

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2121 N California Blvd STE 290, Walnut Creek, CA 94596 (415) 910-6808 hcisolarusa.com

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Prompt service delivery

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Off-grid solar systems
Battery storage
Panel installation
Skilled repairs
Solar carports

Bay Valley Solar Roofing

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1820 Arnold Industrial Way Ste A, Concord, CA 94520 (925) 428-6614 bayvalleyroofing.com

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Reliable customer support

Free quotes

Clear pricing policy

Services Offered

Financing assistance
Skilled repairs
Panel installation
Battery storage

Solar Technologies

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14 Beta Ct, San Ramon, CA 94583 (925) 961-3756 solartechnologies.com

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Clear pricing policy

Reliable customer support

Informative resources

Services Offered

Battery storage
Consultation
Panel installation
Financing assistance

Semper Solaris

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1990 Olivera Rd Suite E, Concord, CA 94520 (925) 856-4242 sempersolaris.com

Clear pricing policy

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Reliable customer support

Services Offered

Consultation
Panel installation
Financing assistance
Battery storage

Source Energy

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161 N Civic Dr #400, Walnut Creek, CA 94596 (925) 319-6634 sourcenergy.solar

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Clear pricing policy

Informative resources

Reliable customer support

Services Offered

Consultation
Panel installation
Financing assistance
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on solar companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How To Choose a Solar Company

Going solar can be a great way to lower electricity costs and help the environment by reducing your carbon footprint using renewable energy. Here are some crucial factors to consider when determining whether a solar installer is reliable.

Check Licensing

Verify that your solar installer is properly licensed. This help guarantee that the work is done correctly using current best installation practices. There are five distinct classifications of solar contracting licenses in California: boilers, PV electrical, HVAC, thermal, and pool heating. To earn licensure, a contractor must take a highly comprehensive educational series, gain four years of field experience, and pass written exams.

Read Customer Reviews

Look at review platforms such as the Better Business Bureau (BBB), Google Reviews, and TrustPilot to find out what previous customers say about local solar installers. Reviews can give you an idea of a company’s reliability and customer service. Be cautious of companies with no reviews or with predominantly negative feedback.

Compare Multiple Quotes

Call at least three solar companies for free, itemized quotes. The quotes should outline all costs and list the solar equipment included. Reviewing multiple quotes helps you find the best option that fits your budget.

Ask About the Warranty

High-quality solar installations should have robust workmanship and performance warranties. The workmanship warranty covers any installation issues like cracks in the panels, poor wiring, or poor alignment. The output warranty ensures an energy generation baseline. Strong warranties reflect a solar provider's confidence in its installations.

Evaluate Financing and Incentives

Solar is great for helping you lower electricity bills over time. Be sure to consider these aspects when considering the final cost and value of solar panels.

  • Look into utility rebates: More rebates might be available from electric companies looking to motivate homeowners to switch to solar power. Contact your local utility provider to learn rebate values and qualification criteria, so you can determine your possible savings.
  • Compare system purchase options: Solar panels can be purchased outright or financed through a lease or loan. Review important financing details such as fees, annual percentage rate (APR), payment schedule, and ownership implications when financing your solar system.
  • Research federal and state tax credits: A 26% federal tax credit on the full cost of solar systems is available through 2032. Many states also offer incentives. These credits can lead to substantial savings for solar buyers.

Cost of Solar Installation in Walnut Creek

The average Walnut Creek homeowner will spend around $7,395 on a home solar system after federal tax refunds. Solar arrays in Walnut Creek cost approximately $3,470 per kilowatt, with the average residential solar system being 3.0 kilowatts. An estimate from a local solar provider will include costs for labor, permit fees, and preliminary work, and will account for your system's panel type, capacity, and size. Some homeowners prefer to lease their solar panels to reduce upfront costs.

Walnut Creek Solar Incentives Guide

Incentive Type: Property Tax Incentive

Website: boe.ca.gov

Incentive Amount:

100% of system value; 75% of system value exemption for dual-use equipment

Incentive Type: PACE Financing

Website: wrcog.us

Incentive Amount:

Eligible products can be financed for up to 25 years, depending on the useful life of the eligible product.
Minimum financing: $5,000
The financing may not exceed fifteen percent (15%) of the market value of the property, up to the first seven hundred thousand dollars ($700,000) of the property’s market value, and ten percent (10%) of the remaining value of the Property above seven hundred thousand dollars ($700,000) minus any PACE assessment on the propertyThe total amount of any annual property taxes and assessments shall not exceed five percent (5%) of the property's fair market value, determined at the time program financing is approved.

Incentive Type: PACE Financing

Incentive Amount:

Locally determined

Incentive Type: Rebate Program

Website: selfgenca.com

Incentive Amount:

For projects 30 kW or larger, 50% of incentive will be received up-front; 50% will be received based on actual kWh production over the first 5 years. For projects under 30kW, 100% of the incentive will be paid up front.
Incentives will step down over time. See below for incentive amounts.

Incentive Type: Feed-in Tariff

Website: cpuc.ca.gov

Incentive Type: Feed-in Tariff

Website: ladwp.com

Incentive Amount:

$0.17/kWh adjusted by a time of delivery multiplier
Base price will step down over time as certain MW goals are met

Incentive Type: Rebate Program

Website: gosolarcalifornia.ca.gov

Incentive Amount:

Step 1 Incentive Rates (contact utility to determine current incentive levels):
Single Family Residential Incentives:
Systems that displace natural gas: $29.85 per estimated therm displaced
Systems that displace electricity or propane: Funding has been exhausted
Commercial/Multifamily Incentives:
Systems that displace natural gas: $20.19 per estimated therm displaced
Systems that displace electricity or propane: $0.42 per estimated kWh displaced *** Note, funding has been exhausted in this category for SCE and PG&E
Solar Pool heating: $5.00 per estimated therm displaced

Incentive Type: Personal Tax Credit

Website: ecowatch.com

Incentive Amount:

30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

Frequently Asked Questions About Solar in Walnut Creek, CA

Generally speaking, a solar photovoltaic (PV) array can be used to power any household system or appliance that uses electricity. In the smallest case, you can use a solar water heater.

There are many benefits to home solar energy. You can qualify for tax benefits, save money, and raise your property values. With the right storage equipment, solar panels can also give you additional energy security and offer some protection from power outages.

Yes, you can use home solar energy alongside conventional power sources. In many areas, solar panels are designed to supplement your existing energy sources, which means you can reap the savings and environmental benefits that come from using solar energy without having to completely switch over.

Generally speaking, your energy bills will decrease significantly after you install solar panels. This is because you're using the energy you generate for free rather than buying it from your power company. In Walnut Creek, the average amount someone can save is $1,053 per year. With net metering programs offered by many utilities, you could ultimately make a profit from your system once the payback period passes.

Net metering is a type of "power purchase agreement." If your state or utility offers net metering, you can sell the solar energy you don't use to the grid. In return, they'll give you a credit on your power bill.

While solar energy is a great option for many, it might not be ideal for homeowners in wet, dark areas. In these cases, you could consider other forms of renewable energy, such as wind or geothermal power, as a primary source. It is also important to speak to a qualified installer to determine if their solar system is compatible with the climate and environment of your area. Even if you choose a different form of renewable energy altogether, you'll still lower your emissions and could still qualify for distributed generation or other money-saving programs.

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