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Prime Buyers Guide Solar Contractors

The Best Solar Contractors in Contra Costa County CA Are the Ones Proven Safe To Hire

Solar contractors in Contra Costa County CA bearing The Prime Buyer's Report TOP 10 symbol are the solar power system installers that have exceeded the minimum California regulatory standard. They are the ones proven by our independent research to have passed the TOP 10 requirements for competency and value, carry liability insurance as protection for you the customer, who hire only documented workers, and for whom our staff have called previous customers to verify high satisfaction with the solar systems in Contra Costa County, including solar heating, solar pool heating, solar water heating, solar electricty, solar panel installers, or solar repairs.


Updated April 12, 2018

 The TOP 10 Solar Contractors in Contra Costa County CA

High Definition Solar
Send an email to this Company
(925) 566-8282
1190 Burnett Ave Suite F
Concord, CA 94520
State Contractor's License #949189
   Prime Buyer's Report TOP 10  Diamond Certified  Better Business Bureau League of California Homeowners

Areas Served: Entire Bay Area & Contra Costa incl. San Ramon CA, Danville CA, Concord CA, ...
Services: solar contractors for home solar power, solar electricity, solar conversion, solar ...
Key Brands: Bosch Solar, Canadian Solar, REC Solar, Sharp Solar Electricity, Yingli Solar

Mares & Dow Construction
Send an email to this Company
(925) 671-9500
1870 Arnold Industrial, #1035
Concord, CA 94520
State license #618118 (B,C-10)
   Prime Buyer's Report TOP 10 Build It Green USGBC Member (U.S. Green Building Council) NorCal Solar (Northern California Solar Energy Association) Velux 5 Star Certified Installer

Areas Served: Contra Costa County incl. Concord CA, San Ramon CA, Alamo CA, Diablo CA, Danville CA,...
Services: solar power systems, solar panels, solar electricity, solar water heating systems
Key Brands: Andersen Windows & Doors, Bristolite Daylighting Systems, Jeld-Wen Windows & Doors, ...

The Best Solar Contractors in Contra Costa County CA Are the Ones Proven Safe To Hire 

The state of California requires solar contractors in Contra Costa County CA to be licensed by the state such as the C46 license specifically for solar installation including solar power, solar heating, and solar pool heating systems, as well as solar repair and maintenance.

But the state license for solar systems is no guarantee that any particular solar contractor in Contra Costa County CA is doing business honestly, is delivering value, or satisfying customers.

This makes it all the more significant that all commercial or residential solar contractors in Contra Costa County CA who bear The Prime Buyer's Report-TOP 10 symbol have been cleared by our research staff as passing all the requirements for Prime Buyer's Report-TOP 10 status such as survey phone calls to previous customers to verify high satisfaction, good complaint record, verified state license, verified liablity and workers comp insurance for your protection, only employees legal to work in the U.S., and more.



Home solar power is a great option for clean, renewable energy. Whether on or off the grid, home solar energy systems come with a number of benefits, including federal and state tax credits. As the home solar energy industry expands, the number and types of jobs performed by solar contractors in Contra Costa County expands as well. They can install all of the necessary components for a new residential photovoltaic system, solar water heating, solar pool heating, and more. These home solar contractors can guide you through the solar system design process to arrive at the optimal solar electrical or solar thermal system for your home solar energy requirements.

Solar Water Heating is Different From Solar Power

Some solar contractors may do only solar water heating or only solar electricity, or both. What's the difference? Solar hot water systems are to generate hot water for your home only, and not to generate electricity for other appliances. Solar water heating systems include storage tanks and collectors.

Most solar water heaters require a well-insulated storage tank. In two-tank systems, the solar water heater preheats water before it enters the conventional water heater. In one-tank systems, the back-up heater is combined with the solar storage in one tank.

There are two types of solar water heating systems: ACTIVE, which have circulating pumps and controls, and less-expensive PASSIVE, which don't.

Types of ACTIVE Solar Water Heating Systems

Direct Circulation Systems: Pumps circulate household water through the collectors and into the home. They work well in climates where it rarely freezes.

Indirect Circulation Systems: Pumps circulate a non-freezing, heat-transfer fluid through the collectors and a heat exchanger. This heats the water that then flows into the home. They are popular in climates prone to freezing temperatures.

Types of PASSIVE Solar Water Heating Systems

Passive solar water heating systems are typically less expensive than active systems, but they're usually not as efficient. However, passive systems can be more reliable and may last longer. There are two types.

Integral collector-storage passive systems: These work best in areas where temperatures rarely fall below freezing. They also work well in households with significant daytime and evening hot-water needs.

Thermosyphon systems: Water flows through the system when warm water rises as cooler water sinks. The collector must be installed below the storage tank so that warm water will rise into the tank. These systems are reliable, but contractors must pay careful attention to the roof design because of the heavy storage tank. They are usually more expensive than integral collector-storage passive systems.

For residential solar water heating systems, there are three types of solar collectors:

Flat-plate collector: Glazed flat-plate collectors are insulated, weatherproofed boxes that contain a dark absorber plate under one or more glass or plastic (polymer) covers. Unglazed flat-plate collectors-typically used for solar pool heating-have a dark absorber plate, made of metal or polymer, without a cover or enclosure.

Integral collector-storage systems: Also known as ICS or batch systems, they feature one or more black tanks or tubes in an insulated, glazed box. Cold water first passes through the solar collector, which preheats the water. The water then continues on to the conventional backup water heater, providing a reliable source of hot water. They should be installed only in mild-freeze climates because the outdoor pipes could freeze in severe, cold weather.

Evacuated-tube solar collectors These use parallel rows of transparent glass tubes. Each tube contains a glass outer tube and metal absorber tube attached to a fin. The fin's coating absorbs solar energy but inhibits radiative heat loss. These collectors are used more frequently for commercial solar applications.

Solar Power Systems (Solar Electricity)

Solar electric systems, also known as photovoltaic (PV) systems, convert sunlight into electricity for your home. PV solar panels can be mounted at a fixed angle facing south, or they can be mounted on a tracking device that follows the sun, allowing them to capture the most sunlight over the course of a day.

Because of their modularity, PV systems can be designed to meet any electrical requirement, no matter how large or how small. You also can connect them to an electric distribution system (grid-connected), or they can stand alone (off-grid).












Solar Contractors in Contra Costa County Can Provide Numerous Services
Aside from all-inclusive solar power units, solar contractors in Contra Costa County can install solar pool heating systems, solar attic fans, and several other auxiliary solar components. Good solar contractors in Contra Costa County may also have experience with other solar energy sources, can convert appliances to run on home solar electricity, maintain or modify existing solar energy systems, repair faulty home solar energy systems, or provide design advice to update your facility with turnkey solar electricity.

If you want to reduce your electrical bills in Contra Costa County and the remove the guilt of draining a non-renewable energy source, solar contractors in Contra Costa County can safely convert your outdated electrical system into an efficient, clean, and environmentally friendly source of power with home solar energy systems. If you're considering converting to home solar power, check out some of the state sponsored benefits at the California Energy Commission Web site.


Solar Contractors in Contra Costa County Offer Many Parts and Materials
Converting your home or business with solar power is a comprehensive process with many auxiliary options. Solar contractors in Contra Costa County use a number of specialized materials to outfit indoor, outdoor, industrial, commercial, or residential structures with solar power, including solar collectors, in-roof collectors, absorber plates, open- or closed-loop solar storage tanks, two-way sweat ball valves, pressure relief valves, and psi pressure gauges. These home solar companies also supply the photovoltaic cells and panels, flexible solar panels, flexible panel accessories, pv modules, boiler drains, evacuated solar collectors, flat plate solar collectors, and solar hot water controllers.

The solar contractors can do a lot more than basic power source retooling. In addition to whole-facility solar energy conversions, solar contractors in Contra Costa County install solar water heaters, solar spotlights, solar landscape lighting, solar stationary or floating fountains, solar fountain pumps, solar garden lights, solar Christmas lights, solar birdbaths, solar sign lights, solar flag lights, solar security systems, solar cameras, or solar security lights. If you wish to extend your environmental conscientiousness to the other energy drains to your life, they can even convert autos, RVs, or marine vehicles to solar power as well. Good home solar contractors in Contra Costa County sell portable solar power systems, solar sealed lead acid batteries, LED solar lighting systems, solar panel kits, solar electronic kits, solar PDA battery chargers, solar 12 volt battery chargers, travel solar battery chargers, or solar cells by the watt.

If you wish to share your newfound environmentalism with the individuals in your life, some solar specialists in Contra Costa County even sell educational solar cells, educational solar kits, and books on solar energy systems. With all the tools and accessories that Contra Costa County solar contractors offer for your photovoltaic energy conversion, it's easy for you to harness the clean and renewable energy of the sun and feel good about your commitment to the environment.

Some Solar Contractors in Contra Costa County Are Much Better Than Others
The Prime Buyer's Report lists these solar contractors in Contra Costa County: High Definition Solar, Mares & Dow Construction, Solar Springs, Snow Solar Systems, Alcor Solar Specialists, H-Ion Solar, Inc., Light Energy Systems, Catch the Sun Solar Electric. Other solar contractors in Walnut Creek, Pittsburg, San Ramon and Richmond CA that might still be in business include: Next Energy Corp Concord CA, Heliodyne, Inc. Richmond CA, Wired Into The Future, Inc. Pleasant Hill CA. Didn't find what you wanted with the TOP 10 Solar Contractors in Contra Costa County? Then click here to see additional companies in this category.




Questions To Ask Solar Contractors in Contra Costa County 

When it comes to solar in Contra Costa County CA, ask these questions about the abilities, experience, and credentials of solar companies you're considering hiring:

• How long have they been installing solar in Contra Costa County?

• How many solar installations have they done similar to yours, in terms of size of job, residential versus commercial, solar electricity versus solar water heating, etc.?

• Can the solar contractor give you names and numbers of customers who had a similar kind of solar installation done who you can call as references? (All solar companies bearing the Prime Buyer's Report—TOP 10 symbol have already had their customer references called by research staff at The Prime Buyer's Report so you don't have to.)

• How much practical experience does the solar contractor have with the specific type of solar system you want? Solar electricity systems require different experience from solar heating or solar pool heating systems.

• Will they do a written analysis of your current energy use and the expected cost savings to be gained from the solar system they are proposing? Is there a written guarantee of that savings differential?

• Can the solar company vouch that all employees sent to your property are legal to work in the U.S.? (All solar companies in Contra Costa County bearing The Prime Buyer's Report—TOP 10 symbol have already signed an agreement to only hire documented workers.)

• Are there currently any rebate programs, whether federal, state, county or local that can help defray the cost of your installation, and will the solar contractor apply for those rebates for you or is it up to you?

• How will they determine pricing?

• Will the solar contractor show you proof of active workers' compensation and liability insurance? (All solar companies bearing the Prime Buyer's Report—TOP 10 symbol have already had proof of insurance verified by research staff at The Prime Buyer's Report so you don't have to.)

• What are the manufacturer warranties on the solar panels or other equipment they plan on installing for you and what do they cover?

• Does the solar contractor provide a written warranty for their labor, aside from manufacturer warranties on the equipment?

• Will permits be needed? If so, will the solar contractors be responsible for getting them or do they leave that up to you?

• Do the solar contractors and their own employees actually complete the solar work or do they hire subcontractors, and if so, what are the names of those companies?

When you've chosen the best solar contractors in Contra Costa County for your specific needs, make sure they are properly licensed by the State of California. (All solar contractors bearing the Prime Buyer's Report—TOP 10 symbol have already had their license verified by research staff at The Prime Buyer's Report so you don't have to.)




Tips About Solar Contractors in Contra Costa County 

Take Time Choosing Solar Contractors in Contra Costa County.
You want your solar conversion done right, and this means you have to find just the right solar contractors to do it. Don't just hire the first solar contractors you find. If you take a little time before starting the solar power project to properly outline the solar job and hire the most qualified solar contractors in Contra Costa County, you're more likely to get the best solar power system for your money.

Write a Description For the Contra Costa County CA Solar Contractors
The benefits of upgrading your archaic energy system are almost too numerous to contest, from environmental accountability, to tax credits for solar power. When the time comes to actually visit with potential solar contractors, prepare a brief summary of your motivations, as well as the solar modifications you wish to make on your home or business. It is this same list that all solar contractors will see, so you can be sure that it's a consistent job description to which potential solar contractors in Contra Costa County will respond.

Get Several Estimates from Different Solar Contractors in Contra Costa County.
Don't hold yourself down to the first quote you see from local solar contractors. Get a few separate estimates to get a price range, but don't stop there. Different estimates also reveal the solar contractors aptitude for solar energy conversion, as well as general work ethic and style—factors that are just as important as the price you might pay the solar contractors.

Get it in Writing From The Solar Contractors.
It is imperative that everything is documented throughout the contracting process with any solar contractors in Contra Costa County. When it comes to a bid, make sure that the solar contractors provide you with a written description of the home solar energy system, pricing, and a timeframe for completion.

Check the Solar Contractors Credentials.
Before you sign a contract with any solar contractors in Contra Costa County, verify licensing, workers' compensation and liability insurances, as well as any other relevant solar power credentials.

Agree Beforehand to Check the Finished Work of any Solar Contractors in Contra Costa County
There should be a clause included in your contract requiring your approval of the completed solar energy systems before the solar contractors are dismissed. This way, you can approve every change made by the home solar companies and cross-check the solar installation with the agreement you both signed.

Know Your Rights With Home Solar Companies in Contra Costa County.
Consumers are entitled to some legal protection with home solar companies but it varies by region. Since you're working with solar contractors in Contra Costa County, you can reference your state's Department of Consumer Affairs.



Home Solar Contractors in Contra Costa County Install Many Home Solar Energy Products and Brands 

Home solar contractors in Contra Costa County  are known to use or sell the following brands of solar power products: Cansolair, Conserv, Sun Earth, ICP Solar, Enersol, Conergy USA, Effective Solar Products, Solaraide, Crystal, SunHom, BP Solar, Lumex, GE, Siemens, Unisolar, Morningstar, Midnite Solar, Trace, Solar Products Inc., and Advanced Solar Products.



Resources About Solar in Contra Costa County CA 

Licensing & Trade Associations Related to Solar in Contra Costa County
ASES American Solar Energy Society (
BBB Better Business Bureau (
CALSEIA California Solar Energy Industries Association (
CEC California Energy Commission (
CSLB Contractors State License Board (
DCA California Department of Consumer Affairs (
Diamond Certified
ISES The International Solar Energy Society (
SEIA Solar Energy Industries Association (
SEPA Solar Electric Power Association (

Media & Web Publications for Solar Contractors
Green Power Magazine
Grist Magazine
Home Energy Magazine
Home Power Magazine
Power Engineer Magazine
Solar Today Magazine

The Prime Buyer's Report provides information for the TOP 10 Solar Contractors in Contra Costa County within the following zip codes:

94530, 94802, 94521, 94820, 94548, 94563, 94526, 94806, 94803, 94516, 94556, 94595, 94564, 94547, 94805, 94575, 94528, 94561, 94524, 94596, 94570, 94553, 94513, 94506, 94572, 94527, 94514, 94569, 94801, 94518, 94807, 94808, 94517, 94582, 94523, 94509, 94525, 94531, 94519, 94850, 94597, 94804, 94507, 94598, 94565, 94520, 94511, 94522, 94583 and 94549


Solar Alamo CA

Quality Solar Alamo CA 94507


Solar Brentwood CA

West Coast Solar Brentwood CA 94513


Solar Concord CA

Alcor Solar Specialists Concord CA 94521
Light Energy Systems Concord CA 94518
Next Energy Corp Concord CA 94520


Solar Crockett CA

AEE Solar Crockett CA 94525


Solar Pittsburg CA

UL Solar Power Pittsburg CA 94565

Solar Pleasant Hill CA

Snow Solar Systems Pleasant Hill CA 94523
Wired Into The Future Pleasant Hill CA 94523

Solar Richmond CA

Regrid Power Inc Richmond CA 94804
Sun Brothers Richmond CA 94804
Sunbrothers Solar Sculptures Richmond CA 94804
Sunwater Solar Inc Richmond CA 94804

Solar San Ramon CA

Sky Power Solar San Ramon CA 94583


Solar Walnut Creek CA

Lamorinda Solar Walnut Creek CA 94597
Nu-Tech Energy Products Hagler Walnut Creek CA 94598
Solarwinds Walnut Creek CA 94597





Prime Buyers Report

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Consumers use the Prime Buyer's Report to avoid the scam, fraud, and businesses with low customer satisfaction.

Independent research conducted by Prime Buyer's Report editors includes phone call surveys with customers of local businesses, checks with state agencies on license and complaint history, verification that each business has insurance coverage to protect you as a customer, phone interviews of business owners, signed agreements that they use only legal workers, and more to determine the businesses that are safe to spend with.

See All The Research Steps

Solar Contractors in Contra Costa County serving Brentwood, Bethel Island, Los Medanos, Hercules, Tara Hills, Oakley, Antioch, Discovery Bay, Canyon, San Ramon, Martinez, Orinda, Clayton, Knightsen, Bay Point, El Sobrante, N Richmond, Moraga, Vine Hill, Cowell, Lafayette, Richmond, Alamo, Pleasant Hill, Hilltop Mall, Kensington, Clyde, Danville, Port Costa, Point Richmond, Blackhawk, Crockett, Pittsburg, West Pittsburg, North Richmond, Rodeo, San Pablo, Walnut Creek, El Cerrito, Pinole, Walnut Heights, Port Chicago, Rheem Valley, Pacheco, Byron, Diablo, Briones, Concord and Maltby



Questions To Ask Solar Contractors in Contra Costa County

When choosing which solar contractor to hire, ask these questions about their experience, range of services, credentials, and methods and materials before deciding. more »



Tips About Solar Contractors in Contra Costa County

We've provided a few tips to assist you in doing business with solar contractors in Contra Costa County CA. From selecting local  solar companies to completing your new home solar energy systems, we've got you covered. more »



Home Solar Contractors in Contra Costa County Install Many Home Solar Energy Products and Brands

Home solar energy contractors and installers of solar systems in Walnut Creek, Pittsburg, San Ramon and Richmond and throughout Contra Costa County offer several different high-quality solar energy brands for your home solar power system installations in Contra Costa County. more »



Resources About Solar in Contra Costa County CA

The following are licensing & regulatory bodies, trade associations and publications related to solar in Walnut Creek, Pittsburg, San Ramon and Richmond.more »