Sustainable Energy Group
in Grass Valley, California
Updated November 3, 2026
This profile is not owner-claimed. SICA can record your request and attempt an introduction; a response is not guaranteed.
Is this company a fit for your project?
Recorded facts are a starting point. Confirm licence, insurance, scope, pricing, and contract terms before signing.
- CSLB licence number
- Not recorded
- Recorded services
- Battery Storage Installation, Commercial Solar, EV Charger Installation, Residential Solar
- Experience
- Not listed
- Service area
- Not confirmed
- Warranty information
- 25-year parts and labor warranty on solar installations No roof leaks guarantee (19+ years with no…
- Financing
- Not listed
Ask the company for its licence number before contracting. Check source
Confirm the company handles your property and project type.
Company history is profile information, not a performance guarantee.
Verify availability for your exact address.
Request separate equipment, workmanship, and roof-penetration terms.
Compare cash price, loan terms, leases, and PPAs separately.
What SICA has recorded for this listing
SICA separates sourced profile data from credentials that have not yet been supplied or independently confirmed. An unavailable field is not presented as a failed credential.
No CSLB number is stored for this profile yet.
Check the official CSLB licence lookupNo NABCEP credential is recorded in this profile.
Search the NABCEP professional directoryReview totals are a third-party signal, not a SICA customer endorsement.
Open the recorded Google review sourceLast recorded directory refresh. Licence, insurance, complaint, and certification status should be rechecked before contracting.
Review SICA's source and refresh policyEvidence availability
Sustainable Energy Group Inc. (SEG) is a Grass Valley, California based solar contractor established in 2004. They offer comprehensive energy efficiency, solar and backup power services for residential and commercial buildings in Northern California. With over 20 years of experience, SEG has installed solar power and backup power systems throughout Nevada County and surrounding areas including Nevada City, Penn Valley, Alta Sierra, Lake of the Pines, Lake Wildwood, Rough and Ready, and the counties of Yuba, El Dorado, Placer, and Sacramento. SEG is a multi-licensed contractor with licenses in general contracting, electrical, solar, and plumbing. Their mission is to help people realize sustainability through renewable energy as well as energy and water efficiency through education, careful planning, and a collaborative process.
Residential Solar
Complete solar installation services for homes
Commercial Solar
Solar solutions for businesses and commercial properties
Non-Profit Solar
Solar installations for non-profit organizations
Off-Grid Solar
Independent solar systems not connected to the power grid
Generators (Home & Commercial)
Backup power generator installation and service
Battery Backup Systems
Energy storage solutions for homes and businesses
Roofing + Solar
Combined roofing and solar panel installation services
Electrical Service & Repair
General electrical work and maintenance
EV Charger Installation
Installation of electric vehicle charging stations
Solar Panels: High-quality photovoltaic panels for energy generation
Battery Storage Systems: Energy storage solutions for backup power
Generators: Backup power systems for homes and businesses
EV Chargers: Electric vehicle charging equipment
25-year parts and labor warranty on solar installations
No roof leaks guarantee (19+ years with no roof leaks)
Voted Best Solar Company in Nevada County
Member of Nevada County Contractor Association
Member of Grass Valley Chamber of Commerce
Member of CALSSA (California Solar & Storage Association)
Phone
Address
420 Sierra College Dr #320, Grass Valley, CA 95945
Business Hours
Mo 08:00-16:00
Tu 08:00-16:00
We 08:00-16:00
Th 08:00-16:00
Fr 08:00-12:00
What Sustainable Energy Group says about its work
These statements describe the company’s own positioning. Confirm material claims in proposals, contracts, and official records.
Local Experts
Grass Valley owned and operated since 2004
Quality Products
Hand-picked solar panels and equipment
Experienced Team
Professional designers and installers
Track Record
No roof leaks in 19 years of business
Comprehensive Services
Solar, batteries, generators, EV chargers, and electrical work
Customer Service
Clear and honest communication with no sales gimmicks
Local Knowledge
Publishing local sustainability guide demonstrates commitment to community
Value Focus
Maximizing performance and return on investment without sacrificing quality
Craftsmanship
Attention to detail, technical knowledge, and state-of-the-art technology
Free Consultations
No-obligation quotes and system designs
Customer Reviews for Sustainable Energy Group
Selected public review excerpts. SICA does not treat third-party reviews as a guarantee of project results.
Read all of Sustainable Energy Group's Google reviews hereSEG came highly recommended to us by another reputable contractor in the construction industry, as well as some of our clients. SEG met and exceeded our hopes and expectations at every phase of our Solar Project. My wife and I are both extremely pleased with the entire process and with our dealings with every member of the SEG team. Congratulations to a professional and ethical team. SEG should and do take pride in the excellent work they do.
I have done several projects on an apartment building with Sustainable Energy Group.
Sustainable Energy Group has stayed a small company because they care deeply about what they do and every single one of their customer's. Watch out, cause now they're growing cause EVERYONE want's good service and a well designed system! This is the PREMIER renewable energy contractor in Nevada County!
Have experience with Sustainable Energy Group?
Contact details recorded for Sustainable Energy Group
Mo 08:00-16:00
Tu 08:00-16:00
We 08:00-16:00
Th 08:00-16:00
Fr 08:00-12:00
F.A.Q.
Recorded questions relating to solar services in Grass Valley, 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.