Lumen Energy

Lumen Energy operates software and brokerage services that let commercial real estate owners assess and monetize their rooftops and other on-site assets through solar and related clean energy projects. The platform underwrites each property across financing strategies using market transaction data, runs a competitive bidding process among developers, and supports execution of the resulting transaction. Positioning materials describe the company as a "modern solar broker" for real estate owners and emphasize projects requiring no capital expenditure from the owner, including rooftop leasing arrangements in which building owners earn income from energy tenants.

The company's software is aimed at commercial real estate portfolio managers who want to identify an optimal clean energy mix building by building and then deploy through Lumen's marketplace. A product called Auto PPA (also described as Auto PA) automatically generates customized financing and power purchase agreements for each building in a portfolio, which the company presents as a substitute for bespoke, consultant-driven underwriting. Lumen states that it is agnostic to capital structure, supporting self-financing, C-PACE debt, and third-party power purchase agreements. Segments served include industrial, manufacturing, multi-family and multi-asset portfolios, with applications spanning rooftop solar, carport solar and EV charging.

CEO and co-founder Peter Light, who previously worked on energy projects at Google's X, has framed the opportunity around the complexity of commercial building projects: returns depend on region, building, roof and utility tariff, with a marginal internal rate of return around 3%, a good one around 10% and a strong one around 12%. He cites roughly 17% of global greenhouse gas emissions coming from buildings, and reporting on the company notes 145 GW of untapped U.S. commercial solar potential and commercial buildings accounting for 16% of U.S. greenhouse gas emissions.

Founding story

Co-founder and CEO Peter Light previously worked on energy projects at Google's X before starting the company; he has said he met his co-founder Dave through the My Climate Journey (MCJ) community, and framed the company around buildings as a large, persistent source of greenhouse gas emissions that has recently become profitable to decarbonize.

Business model

Lumen provides a software platform and brokerage service that intermediates between commercial building owners seeking on-site clean energy projects and developers and financiers seeking to invest in them, with the Auto PPA/Auto PA product acting as a marketplace that generates customized financing offers per building. Owners are offered free property and portfolio evaluations as an entry point, with projects structured so that the owner does not fund capital expenditure, and Lumen also markets rooftop leasing in which owners receive income from energy tenants.

Lumen positions itself as a broker and marketplace for commercial solar transactions, with owner-side evaluations offered at no cost and no capital expenditure required from property owners; projects are financed through third-party power purchase agreements, C-PACE debt or owner self-financing.

Traction

Company materials cite $33M of new solar income across 13 industrial properties, $9M in savings from zero-capex carport solar and EV charging at a manufacturing customer, portfolio-wide solar feasibility work covering more than 1,400 properties, 50% cost savings from optimized system design at a multi-family development, and solar adoption scaling across more than 1,500 properties. At the time of the 2023 Series A, the company said hundreds of properties had been run through its original platform.

Latest developments

In June 2023 Lumen announced an $11 million Series A led by Ajax Strategies and simultaneously launched Auto PA, a product providing automatically customized financing for each building in a commercial real estate portfolio. Third-party trackers report a further venture round of $700,000 announced in April 2026 and list Lowercarbon Capital, Designer Fund, Bridge Investment Group and Third Derivative among the company's investors.