William Ouyang

William Ouyang is a Principal at Lotus Infrastructure Partners, the U.S.-based energy-infrastructure investment firm headquartered in Greenwich, Connecticut that was launched on January 1, 2023 as the successor brand to Starwood Energy Group Global. He joined the firm — then Starwood Energy Group — as an investment professional in August 2013 and rose to Vice President, focusing on principal investing and asset management in the power sector. Following the 2023 rebrand, in which Starwood Energy's team transferred to Lotus Infrastructure Partners (with Starwood Capital Group remaining a passive minority investor), Ouyang has carried the title of Principal.

Over his tenure he has played a hands-on role in the acquisition, development, and asset management of the firm's utility-scale generation portfolio. Firm bios credit him with involvement in projects including the Stephens Ranch I and II, Shannon, Horse Creek, Electra, and Northwest Ohio developments, as well as in the firm's build-out of utility-scale wind and solar and the acquisition of Allium Renewable Energy.

Before joining Starwood Energy, Ouyang was an Analyst in Citigroup's Alternative Energy Finance group, where he worked primarily on renewable-energy transactions involving wind, solar PV, and solar CSP facilities. He holds a B.S. in Economics, Statistics, and Business Administration from Carnegie Mellon University.

• Invests as part of an institutional infrastructure fund (Lotus Infrastructure Partners, ~$7B AUM), not as an individual angel.
• Core focus areas mirror the firm's mandate: renewables (utility-scale wind and solar), battery/energy storage, electric transmission, and downstream/thermal power infrastructure.
• Deal types are project-level and platform investments — acquisition, development, and long-term asset management of energy assets — rather than early-stage venture rounds.
• Sustainability and energy-transition assets across North America are central to the firm's stated strategy.