Mainstream Energy

What Mainstream Energy does

Mainstream Energy is a U.S.-based private solar energy company headquartered in San Luis Obispo, California, founded in 1997. According to its firmographic profile, the company offers integrated solar solutions intended to develop clean and secure solar energy sources, which implies activity across the solar value chain — most plausibly system design, engineering, procurement, construction (EPC), and integration of photovoltaic systems for commercial, residential, or utility customers. The company's stated headcount of 501 to 1,000 employees positions it as a mid-sized player in the U.S. solar market rather than a small regional installer or a large utility-scale developer.

The company's documented capital history is limited to a single disclosed event: a $40 million investment on 2008-04-15 from REC Group, a Norwegian solar module manufacturer. The structure of the round — a strategic investment from a tier-1 module supplier rather than a passive financial placement — implies both a capital infusion for growth and a likely supply or distribution alignment between Mainstream Energy and REC in the U.S. market.

It is important to flag a material data-quality caveat: nearly every enrichment field in the available source material is empty, and the primary web source resolves not to an operating corporate website but to a domain-for-sale listing on HugeDomains (MainstreamEnergy.com priced at $6,495). This raises the possibility that Mainstream Energy no longer operates as an independent, branded entity — it may have been acquired, rebranded, or wound down — but the input data does not confirm any of these outcomes, and no successor entity, acquirer, or restructuring date is documented.

Name

Mainstream Energy

Website

https://mainstreamenergy.com

Company type

Private

Founded year

1997

Headcount range

501–1,000 employees

Short description

Mainstream Energy is a U.S.-based private solar energy company founded in 1997 and headquartered in San Luis Obispo, California, providing integrated solar solutions for clean energy generation with a workforce of 501 to 1,000 employees.

Ownership category

akta.pro rank

Product category

Solar Energy Development

NAICS

Solar Electric Power Generation (221114)

SIC

Electric Services (4911)

akta.pro industry

PRIMARYEUAMABAB

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System)

Energy, Utilities & Environment/Renewable Energy (Solar, Wind, Hydro & Geothermal)/Solar Energy (PV, CSP, Rooftop & Utility-Scale)

SECONDARYEUACALAJ

Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro)

Energy, Utilities & Environment/Electric Power Generation/Distributed & Behind-the-Meter Power Generation (Microgrids, DG)

Keywords

• Integrated solar solutions
• Solar energy development
• Clean energy systems
• Renewable power generation
• Solar project development

Headquarters

HQ city

San Luis Obispo

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D

Core offering

Mainstream Energy offers integrated solar solutions to develop clean and secure solar energy sources. The company is positioned as a developer/integrator of solar energy systems, providing end-to-end solar power generation capabilities for energy customers.

Product overview

MainstreamEnergy.com is a domain name listed for sale on HugeDomains marketplace. The source does not provide information about any active products, services, or offerings from Mainstream Energy as a company. The domain is available for purchase at $6,495 (one-time) or $270.63/month for 24 months with 0% interest financing.

Differentiator

Problem solved

Functional benefit

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves3 records

Expansion highlights2 records

Broad incumbents

• Tesla Energy (Solar): Solar and storage arm of Tesla, offering integrated rooftop solar and Powerwall systems nationwide. Comparable as a broad incumbent in integrated residential and C&I solar solutions, particularly within California where Mainstream Energy is based.
• Mortenson Construction (Renewable Energy): Major US renewable energy EPC contractor delivering utility-scale wind, solar, and storage projects. Comparable to Mainstream Energy as an established solar EPC operator with self-perform field teams and developer relationships.
• First Solar: US-headquartered thin-film solar module manufacturer and utility-scale project developer with integrated EPC capabilities. Comparable as a vertically integrated solar player combining module supply with project development and execution.

Direct peers

• Sunnova Energy International: US residential solar service and integrated energy provider operating across multiple states with a focus on long-term customer agreements. Comparable to Mainstream Energy as a US distributed solar integrator with recurring service revenue model.
• Sunrun: US-leading residential solar and integrated energy services company offering solar systems with storage and grid services. Comparable to Mainstream Energy as a California-headquartered integrated solar provider serving distributed generation customers.
• Swinerton Renewable Energy: US solar EPC contractor building utility-scale and commercial PV projects with self-perform construction capabilities. Comparable to Mainstream Energy as a vertically integrated solar EPC with direct field-services execution capacity.
• Cypress Creek Renewables: US solar project developer and operator focused on community and utility-scale solar plus storage. Comparable to Mainstream Energy as a US-based integrated solar developer with development-through-EPC capabilities.
• SunPower (acquired by TotalEnergies): Long-established US solar manufacturer and integrated solutions provider with deep California roots. Directly comparable in business model — designing, manufacturing, and delivering integrated solar systems for residential and commercial customers.

Regional players

• Baker Electric (Solar division): California-based electrical contractor with a dedicated solar EPC division serving Southern California commercial and residential customers. Comparable to Mainstream Energy as a California-rooted integrated solar EPC with regional concentration.

Others

• REC Group (now Reliance New Energy): Norway-headquartered solar module manufacturer and the disclosed 2008 investor in Mainstream Energy. Relevant as the upstream supplier and capital partner that defines Mainstream Energy's module pipeline economics.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks1 record

Key highlights4 records

Customer concentration

• Xx.com/recsolar
• Facebookfacebook.com/recsolar

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mainstream Energy