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Allterra Solar

Allterra Solar

Solar Energy Contractors
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About Us

Allterra was founded in 2004 by brothers James and Nathaniel Allen. Allterra began as an environmental engineering firm that investigated and remediated dissolved contaminants in groundwater. In Allterra Environmental’s short history, it successfully investigated and closed 30 groundwater contamination cases in the SF Bay Region. In 2009, Allterra launched its solar division to accelerate the adoption of renewable energy on the central coast. Allterra’s unique data-driven approach and unparalleled customer service have fueled the company’s success. In 2012, Allterra Solar was the runner up for Best Solar Company in the annual Good Times readers poll. Starting in 2013 Allterra won Best Solar Company and has not relinquished that title. Subsequent awards include Winner Readers Choice for the Santa Cruz Sentinel in 2014 and 2016, Best Solar Company 2017 by readers of the Monterey County Weekly, Best Place to Work in Monterey Bay by Monterey County Business Council and the 2015 Cool Climate Leader by California Air Resources Board, and award earned by only five other companies in California. Allterra is certified Small Business (DSG #1568700) in California and an active participant in Think Local First and other Local Business Organizations promoting small independently owned organizations. We are focused on the Central Coast of California; home to our staff, clients, and owners. (A, B, C-10, C-46).

Services Provided

Home Energy Audit, Solar Panel Cleaning, Solar Panel Installation, Solar Panel Repair, Solar Water Heating, Solar Engineering & Design, Home Battery Storage (Tesla Powerwall), Electric Vehicle Charging Stations, Commercial Solar Installation

Areas Served

Ben Lomond, Bonny Doon, Boulder Creek, Brookdale, Capitola, Davenport, Felton, Holy City, Lompico, Los Gatos, Mount Hermon, Opal Cliffs, Paradise Park, Pasatiempo, Redwood Estates, Santa Cruz, Scotts Valley, Soquel, Twin Lakes, Zayante, Saratoga, San Jose, Half Moon Bay, Monterey, Salinas, Redwood City, Carmel, Gilroy, Seaside, Marina, Pacific Grove, Santa Clara, San Mateo, Pacifica, Watsonville


- SC Good Times Best Solar Company 2011 - Present - SC Sentinel Readers Poll - Best Solar Co. 2014 - Present - Best Place to Work: Monterey Bay 2013 - Monterey Bay Green Business - DGS Certified Small Business - Cool Climate Award Winner 2015


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11 Projects

Inspiration for a mid-sized timeless beige one-story wood exterior home remodel in Other with a shingle roof

Solar Installation (Westside)

Santa Cruz, CA
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Business Details

Business Name

Allterra Solar

Phone Number

(831) 425-2608


207B McPherson Street
Santa Cruz, CA 95060

Typical Job Cost

$5,000 - 50,000

Varies by project and equipment. We offer free site assessments and proposals to help clients make informed decisions about their energy future.

License Number



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