Insights

Small but seasoned A1 Sun, Inc. is a small to mid-sized solar-focused company with 11-50 employees and founders with 30+ years in the solar field, suggesting a tight-knit team and deep domain expertise ideal for targeted enterprise-grade partnerships and long-term project collaborations.

Regional footprint Operates primarily in the San Francisco Bay Area including Berkeley, Oakland, Emeryville, Albany, El Cerrito, Richmond and Orinda, presenting opportunities for local project wins, channel partnerships, and regional service contracts with high receptivity to localized solar and energy efficiency initiatives.

Financial scale Revenue is in the multi-million range (10M-25M), indicating a solid growth stage with potential for upsell of higher-margin services such as battery storage, monitoring software, or expanded installation capacity to scale with demand.

Technology stack Utilizes common web and deployment technologies (Concrete CMS, Vue.js, Ubuntu, Apache) suggesting compatibility for modern project management, customer portals, and scalable digital marketing efforts to attract new commercial and residential solar customers.

Competitive positioning Operating in a competitive solar market with peers like SunPower and Momentum Solar; opportunity to differentiate through local expertise, customized financing options, and bundled energy efficiency solutions for homeowners and small businesses, supported by an experienced leadership team.

A1 Sun, Inc. Tech Stack

A1 Sun, Inc. uses 8 technology products and services including Concrete CMS, Fastmail, Microsoft 365, and more. Explore A1 Sun, Inc.'s tech stack below.

Concrete CMS

Content Management System

Fastmail

Microsoft 365

Vue.js

Javascript Frameworks

Moment.js

Javascript Libraries

Ubuntu

Operating Systems

Bluehost

Web Hosting

Apache

Web Servers

A1 Sun, Inc. Email Formats	Example	Percentage
FirstL@a1suninc.com	JohnD@a1suninc.com	100%

A1 Sun, Inc. Email Formats

Example

Percentage

FirstL@a1suninc.com

JohnD@a1suninc.com

100%

Frequently Asked Questions

What is A1 Sun, Inc.'s phone number?

You can contact A1 Sun, Inc.'s main corporate office by phone at

+1-510-526-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is A1 Sun, Inc.'s official website and social media links?

A1 Sun, Inc.'s official website is a1suninc.com and has social profiles on LinkedIn.

How much revenue does A1 Sun, Inc. generate?

As of August 2026, A1 Sun, Inc.'s annual revenue is estimated to be $10M - $25M.

What is A1 Sun, Inc.'s SIC code and NAICS code?

A1 Sun, Inc.'s SIC code is 1629 - Heavy Construction, Not Elsewhere Classified and NAICS code is 33441 - Semiconductor and Other Electronic Component Manufacturing.

How many employees does A1 Sun, Inc. have currently?

As of August 2026, A1 Sun, Inc. has approximately 13 employees across 1 continents, including North America. Key team members include Installer: A. G. Explore A1 Sun, Inc.'s employee directory with LeadIQ.

What industry does A1 Sun, Inc. belong to?

A1 Sun, Inc. operates in the Renewable Energy Semiconductor Manufacturing industry.

What technology does A1 Sun, Inc. use?

A1 Sun, Inc.'s tech stack includes Concrete CMS, Fastmail, Microsoft 365, Vue.js, Moment.js, Ubuntu, Bluehost and Apache.

What is A1 Sun, Inc.'s email format?

A1 Sun, Inc.'s email format typically follows the pattern of FirstL@a1suninc.com. Find more A1 Sun, Inc. email formats with LeadIQ.

When was A1 Sun, Inc. founded?

A1 Sun, Inc. was founded in 2007.

A1 Sun, Inc.

Q: What is A1 Sun, Inc.'s official website and social media links?

A1 Sun, Inc.'s official website is a1suninc.com. A1 Sun, Inc. has social profiles on LinkedIn.

Q: How many employees does A1 Sun, Inc. have currently?

A1 Sun, Inc. has approximately 13 employees.

Q: What technology does A1 Sun, Inc. use?

A1 Sun, Inc.'s tech stack includes Ubuntu, Microsoft 365, Concrete CMS, Vue.js, Font Awesome.

Q: What is A1 Sun, Inc.'s NAICS code?

A1 Sun, Inc.'s NAICS code is 33441 (Semiconductor and Other Electronic Component Manufacturing).

Renewable Energy Semiconductor ManufacturingCalifornia, United States11-50 Employees

A1 Sun, Inc. is a Berkeley, California-based company focused on installing photovoltaic and thermal solar energy systems in the renewable energy sector. It aims to provide high-quality, affordable solar installations that benefit local residents and the wider environment. The company serves the Berkeley area and nearby East Bay communities such as Oakland, Emeryville, Albany, El Cerrito, Richmond, and Orinda, extending its reach beyond these towns. The firm was incorporated in 2007 by Larry Giustino and Paul Cooper, both with decades of experience in the solar field. Their prior work in the local solar community includes leadership roles with Solar Station, Inc. and the nonprofit Alternative Energy Collective in the late 1970s and 1980s.

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