316 Castro Valley, CA Solar Energy Contractors

Are you interested in solar energy for your home? Whether you want to lower your electricity bill or help the environment (or both), you’ll want to hire a solar energy contractor. Solar energy contractors design, install and service renewable energy systems for homes and businesses. More 
HelioPower (415) 971-9965
San Francisco, CA, 94105
18 miles from Castro Valley
HelioPower Solar is the value leader in home solar. We deliver the most competitive price per watt in California according to the California Solar Initiative. Read More
Richmond, CA, 94804
21 miles from Castro Valley
Solar is our business. Solar system sales, lease, financing... Professional design work quality installation... Turn Key System delivery... Custom tailored solar system... Read More
Renewables West (510) 895-0774
San Leandro, CA, 94577
5 miles from Castro Valley
Renewables West provides mobile solar generators (on-board battery power storage) for construction site power and construction lighting trailers. One-day rentals to long-term... Read More
POCO Solar Energy, Inc. (408) 970-0680
Santa Clara, CA, 95054
22 miles from Castro Valley
Your Local Solar Experts, Since 1984 POCO Solar Energy, Inc. has been providing world class solar energy service and products to residences and businesses from San Francisco to... Read More
Sun First Solar (415) 458-5870
San Rafael, CA, 94901
30 miles from Castro Valley
Sun First! is a Solar Design and Installation Company based in Northern California. For 30 years, we have specialized in residential and commercial photovoltaic and solar pool... Read More
Earthwise Energy (866) 675-2540
Sausalito, CA, 94965
26 miles from Castro Valley
Earthwise Energy is a wholesale distributor of solar energy products…with a twist. Our mission was conceived from an industry wide demand for reliable and attentive customer... Read More
Simply Solar (707) 285-7037
Petaluma, CA, 94954
49 miles from Castro Valley
A local, community-focused solar company, Simply Solar strives to put people first. Founded by a group of industry veterans and experts in the fields of technology, we wanted to... Read More
THE SOLAR COMPANY (510) 888-9488
CA, 94546
CA, 94545
4 miles from Castro Valley
Sling Shot POWER (510) 398-6406
CA, 94541
1 mile from Castro Valley
CA, 94544
6 miles from Castro Valley
Solar Universe Brentwood (925) 308-6177
Brentwood, CA, 94513
28 miles from Castro Valley
Headquartered in California, Solar Universe has been providing locally owned and operated solar to neighborhoods across the country since 2008 through our locally owned and... Read More
Pac Solar (415) 299-8989
San Rafael, CA, 94901
30 miles from Castro Valley
Pac Solar is a full service solar integrator offering sales, design, and installation of state-of-the-art solar energy systems for both homes and businesses. We are committed... Read More
American GMG Inc. (510) 675-9793
CA, 94587
6 miles from Castro Valley
CA, 94566
13 miles from Castro Valley
List your business here for free - Learn More

What Types of Energy Systems Do Solar Energy Contractors Install?


The most common types of alternative energy systems for the home are solar electric, solar water heating and wind power systems. Solar professionals can help with everything from replacing old skylights with new solar skylights to installing complete solar energy systems.

Let’s say you want a solar electric system for your home. An off-grid system basically consists of solar panels and battery banks. These battery banks store the sun’s energy so you can use electricity at night or on a cloudy day. This system is designed to keep household electricity running for about two or three cloudy days; longer cloudy periods require a backup generator. To install an off-grid system, you’ll want to hire a certified California solar energy contractor.

Along with off-grid solar, wind and hybrid energy systems that include batteries and backup generators, there are also grid-tied solar and wind operations. Grid-tied systems are attached to your Castro Valley, CA utility company so if you produce more energy than you use, your meter goes down and you build up energy credits.

Installing solar skylights can save electricity. Sun tunnel skylights are tubular daylight devices that capture sunlight through domes on your roof. Attached to these domes are highly reflective tunnels that draw natural light down into closets, hallways and stairways.

Solar energy can heat your home, produce electricity and provide hot water. Solar power systems are part of the growing trend toward energy sustainability. Whether you are aiming for increased sustainability or want to improve energy conservation, you’ll find California solar energy contractors and any necessary specialty subcontractors here on Houzz.

Questions to ask potential solar energy contractors:


  • Do you have state certification?
  • Will you come to my home for a free onsite consultation?
  • Are you able to repair an older system?
  • Can you provide me with a layout to see where the panels will go and what they will look like?
  • Can you give me any information on solar rebate programs?

Find solar energy contractors on Houzz. Search the Professionals section for California solar energy contractors or browse Castro Valley, CA photos of completed installations and look for the solar energy contractor’s contact information.
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