Solar Installation Group, Inc.

in Oakdale, California

Updated November 1, 2026

Public-data listing
Sources recorded by SICA
4.8
★★★★☆
228 Reviews
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CSLB licence number
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Recorded services
Commercial Solar, Residential Solar

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Experience
Not listed

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Service area
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Warranty information
Solar Panel Warranty: Solar panels last about 25-30 years (performance warranty details)

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Financing
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2/4 evidence areas documented

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Data freshness November 1, 2026

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LicensingNot supplied
Review signals228 indexed
NABCEP credentialsNot supplied
Profile freshnessNovember 1, 2026

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Solar Installation Group, Inc.
Image data © 2026 Google

Solar Installation Group (SIG Solar) is a family-owned and operated solar company founded in 2013, serving Northern California and the Central Valley. With over three decades of experience and state-of-the-art solar technology, SIG Solar leads the industry in innovation. The company started as a 3rd party installation company for solar sales companies across the US, handling residential, commercial, and agricultural solar projects. SIG Solar is a true father-son operation with Stephen Kerr and his sons Paul, Jared, and Aaron overseeing every part of the solar process. They operate under a contractor's license which has been active for over 40 years. What sets SIG Solar apart is their completely in-house approach - they install all projects themselves without subcontracting, ensuring premium service by overseeing each step of the process with their highly trained team of sales reps, installers, and electricians.

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Company-supplied profile content

What Solar Installation Group, Inc. says about its work

These statements describe the company’s own positioning. Confirm material claims in proposals, contracts, and official records.

Family Owned and Operated

A true father-son operation focused on family and community

In-House Installation

All projects installed by SIG's own team, never subcontracted

Decades of Experience

Over 3 decades of experience in the solar industry

Complete Project Management

Oversee the entire process from design to installation

Fast Installation

Typical installation completed in one day with full process taking 30-45 days

Customer Service Focus

Dedicated to making clients feel like part of the SIG family

100% Financing Available

Multiple financing options with zero out-of-pocket costs

Increased Home Value

Solar installations can increase home value by up to $20,000 for a 5kW system

Professional Team

Highly trained sales representatives, installers, and electricians

Free Power Generation

Generate free power for your system's entire lifecycle

Local Expertise

Serving Northern California and Central Valley communities

Customer Reviews for Solar Installation Group, Inc.

Selected public review excerpts. SICA does not treat third-party reviews as a guarantee of project results.

Read all of Solar Installation Group, Inc.'s Google reviews here
★★★★★
PUBLIC REVIEW EXCERPT

I found out about SIG when I used a neighborhood forum to see who people recommended. The most important thing to us was that they were local and handled everything in house. We met with Josh Clark and he was so knowledgeable and patient in explaining everything to our satisfaction. He made himself always available for our numerous questions and concerns.

Eva Walker
★★★★★
PUBLIC REVIEW EXCERPT

Josh Clark at SIG Solar has consistently demonstrated outstanding customer service and communication skills, earning him high praise from clients and colleagues alike. His dedication to understanding customer needs and providing tailored solutions has made a significant impact on the satisfaction and loyalty of SIG Solar's clientele. Josh's proactive approach ensures that customers are kept informed throughout every stage of their solar installation projects, addressing any concerns promptly and professionally. His ability to explain complex technical details in an easy-to-understand manner has also been instrumental in helping customers make informed decisions about their solar energy investments.

Deshawn Woodard
★★★★★
PUBLIC REVIEW EXCERPT

We used SIG for our new solar system on our house. We met Josh Clark, who was referred by our neighbor. Josh took the time to explain the process and answered our questions. He stayed in touch from beginning to end, which included an excellent job of clean up and getting us connected to their solar systems. The crew did an awesome job also, which included one of the owners of SIG coming to visit us to make sure we were happy. We would highly recommend SIG and Josh Clark if you’re considering putting up a new solar system or upgrading your current system.

Olivia Briesmeister

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Contact details recorded for Solar Installation Group, Inc.

Address: 1824 Ackley Cir suite a, Oakdale, CA 95361
Phone: 1 888-508-0558
Hours:

Mo 09:00-17:00

Tu 09:00-17:00

We 09:00-17:00

Th 09:00-17:00

Fr 09:00-17:00

F.A.Q.

Recorded questions relating to solar services in Oakdale, California.

California does not offer a state tax credit, but Californians are eligible for the 30% federal solar tax credit.

According to EnergySage, the average upfront cost of a solar installation in 2025 is close to $20,000. After a 30% tax credit of $6,000, the average outlay is around $14,000-$15,000.

The payback period is estimated to be 5-9 years, and over the course of 25 years the projected savings is $120,000. For more data, visit EnergySage.