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Allterra Solar

Founded in 2004, Allterra Solar is a family owned solar company headquartered in Santa Cruz, CA. Allterra is an industry leader serving residential and commercial clients throughout the Central Coast and Bay Area. Allterra has recruited and retained the best solar designers, installation technicians and customer support representatives to ensure that each client has the best experience possible. Allterra's customer focused approach and commitment to the community has led to more than 50% of the company's business coming from client referrals.

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Residential & commercial solar energy system design, installation, and financing. Stop paying too much for electricity, upgrade to solar for $0 Down with our award winning local financing program. Allterra Solar installs solar PV, battery back up and EV charging stations. Get a free evaluation and financial analysis today. Assessments help us determine your energy usage, usable solar area, goals, and available solar financing options so that you have a clear view of how solar can save you money and make a difference in your community.
Year Established
Phone Number
(831) 425-2608

Services Offered

  • Installation
  • Financing
  • Energy Auditing
  • Construction
  • Electrical Contracting
  • General Contracting
  • Solar Repair & Maintenance
  • Community Solar

Associated product manufacturers

Associated financing companies

Associated installers

  • We build the projects we propose

Workmanship Warranty

10 Year Workmanship on labor and roof. We screen equipment and select equipment we trust with strong warranty and support track records.

You can also check out our 3rd party reviews here:




CSLB: 847973 A, B, C-10, C-46


General Liability, Errors and Omissions, Commercial Auto, Umbrella, and Workers Compensation. We have comprehensive coverage and can produce insurance certificates upon request.


Monterey Bay Green Business, Think Local First, Small Business (DGS), SunPower Elite Dealer., NABCEP, Enphase Platinum Installer, LG Platinum Installer.

Industry Certifications

  • North American Board of Certified Energy Practitioners
  • Solar Energy Industries Association
  • PV Magazine 2019

Manufacturer Certifications

  • Authorized Solar Installer
  • Certified Gold
  • Certified Solar Professional
  • Platinum Installer

What Customers Are Saying

3 reviews
Average Rating 3 review(s)
Leave a Review
Aggressive follow up

Really bad sign when you can't contact them before you start. Marketing was extremely aggressive...then return calls or e-mails. Not happy. If it's this bad before they start... No thanks.

Posted by peggygnehm on May 06, 2020
Change is Good

It was important to us that Allterra was the only installer of three final contenders to have so many licensed professionals on board: not only solar, electrical and general contractors, but also every member of their sales staff! While Allterra was not the cheapest bid submitted, it was also not the most expensive. In the end, we were happy to have paid a bit more for knowing an able, experienced stable of professionals did exactly as they promised under the contract. Bravo!

Posted by furioust on Dec 23, 2016
Very professional and competent

I chose Allterra because they were a local company whom I could talk to easily even though their bid was slightly higher than the lowest bidder. However, when compared to the bid by Solar City, Allterra's bid was much better. Approval from HOA took a little time but Allterra was very patient during the entire process. Once all the approvals were in place, Allterra sent very competent people and installation, city inspection and pge net metering went very smoothly.

Posted by shyammundhra on Oct 28, 2016



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