A 1 Sun Inc
1455 4th Street , Berkeley, California, United States

After installing solar on our own home and business, our neighbors wanted their own systems installed. For the benefit of our neighbors, our community, and the larger global environment, we incorporated A1 Sun, Inc. with the goal of installing superb, affordable photovoltaic and thermal solar energy systems. A1 Sun is located in Berkeley. We serve the surrounding counties of Alameda, Contra Costa, Marin and beyond.

A1 Sun is family owned and managed. Our team of knowledgeable installers and design professionals come from within our local community. Our community is our customer base. Our customer base is our best advocate.  A1 Sun installs solar systems of the highest quality. We are committed to providing the best value for our clients, while benefitting the planet by doing business sustainably. Our office is solar powered and charges our expanding electric vehicle fleet. We precycle, recycle, and use environmentally-friendly materials. We are proud of our environmental commitment and socially conscious business practices.  We provide superior quality systems, service, and are cost competitive. From the initial contact to your first solar kWh generated, we make sure you are fully informed. A1 Sun is with you at every step of the installation process. We are happy to answer your every question. We firmly believe in what we do. A1 Sun makes installing solar on your home or business easy.

Why A1 Sun?

• Our workmanship is guaranteed for 10 years. Your system will last much longer. We custom build with a 30 - 50 year design horizon. To achieve this goal, we use A1 Sun proprietary design, components, and installation techniques. We provide you with ways to use energy more efficiently and work with you to find what is best for your needs. Weve seen solar companies come and go, but our history and reputation in the community proves our track record. Our A1 Sun commitment is to install the best solar systems for our customers.
• From the moment you contact the A1 Sun Team, you will have the best experience possible. While in the process of designing your system, we take the time to explain anything that may seem unclear. We give you options. Its easy. We handle all the paperwork, permits and inspections. Our customers are the happiest solar producers in the country. 
• Beginning in the 1970s, the A1 Sun management team designed, supervised, and built many solar projects. Over the years as technologies have changed, we stayed current with the evolution of optimal components and systems. Whether your site is a new or existing home, or a multi-unit building, we have a strong history of design, practical experience, and best practices to bring to your custom project.
• You wont find shady salespeople here. We dont use slick, misleading and costly advertising gimmicks. Our sales approach is to provide you with the straight forward information, lasting workmanship and the best value. Any questions you have will be answered fully and any concerns you have will be addressed immediately.

Why Solar?

• 30% Federal tax credit
• Reduce or eliminate electricity bills
• Add value to your home or business
• Solar is more affordable than ever (panels are 70% less than 5 years ago)
• Be part of the Green Revolution, and help save the planet!

Our Experience 

 A1 Sun provides quality service because we know and use technologies that are proven. In addition, we constantly research and test innovative ideas. From photovoltaic (PV) to solar domestic hot water (SDHW) to electric vehicle charging stations to networked system monitoring, we have a wealth of experience. We design and install lasting, reliable, long term performance.  After A1 Sun analyzes your site parameters, we design and build the optimal size system you require. Commercial installations are a growing segment of our business. We are easy to work with. Business owners, architects, contractors and management companies are discovering how well our systems perform. A1 Sun serves each client with the same dedication to individual attention that has provided the foundation of our business.

Our Commitment to the Planet 

 An Alameda County Certified Green Business since our first year in business, we are 100% solar powered. Solar photovoltaic arrays, power our office and charge our electric vehicles. Evacuated tube thermal collectors heat our water. We will soon upgrade our grey water recycling system. We install the same components for our clients that we use ourselves. Our commitment to the environment extends beyond what we do, to how we do it. We precycle, then recycle everything that is possible to recycle. We minimize waste and appropriately dispose of what we cannot recycle.

We Do Business Better 

 A1 Sun has an A listing with the Better Business Bureau because of our trustworthy business practices. Our reputation is built on our integrity and high standard of workmanship. Our goal is to ensure an equitable work environment where all employees exchange consideration and respect. We are honest and open within our A1 Sun Team and with our clients, suppliers, city officials and departments. A1 Sun works with the cities of Albany, Alamo, Benicia, Castro Valley, El Cerrito, El Sobrante, Emeryville, Hercules, Kensington, Lafayette, Moraga, Novato, Oakland, Orinda, Piedmont, Pinole, Richmond, San Anselmo, San Rafael, San Ramon, Vallejo, Walnut Creek and beyond.

Residential Solar

Just like buying your home, an investment in an A1 Sun Solar System is a wise choice. A well designed solar system adds lasting value to your home and is exempt from property taxes. There has never been a better time to install solar than now. The 30% Federal Solar Tax credit is in place, modules have come down in price, and the sun continues to shine in California. It is a fact that non- renewable energy prices will continue to skyrocket. An A1 Sun Solar System is a sensible decision, a long term plan, and a great investment.  One day every home will be solar powered. It just makes that much sense.  We work with you to custom design, build, maintain, and monitor a world class solar generation system for your home. The moment the switch is turned on, you will power your home with sunlight, pay lower utility bills, while producing no pollutants or greenhouse gasses.

Commercial Solar

From day one, an A1 Sun Solar System generates an income stream. As energy prices rise, your system and income stream become more valuable over time. Your system will pay for itself often within just a few years, after which your solar system produces steady escalating profit. With few moving parts, high quality components, and superior installation, operating and maintenance costs are minimal.