Lacuna Sustainable Investments

Lacuna focuses on early-stage companies — typically post-prototype, pre-revenue or early-revenue — that require first institutional capital to fund initial manufacturing scale-up or industrial pilot projects. The firm bridges the gap between angel-funded R&D and later-stage project finance or growth equity. It does not invest in seed-stage concept companies or in mature infrastructure assets.

Given its narrow hardware-and-infrastructure mandate, Lacuna sources heavily through deep-tech university spinout networks, DOE and ARPA-E grant recipient pipelines, and climate-focused incubators such as Greentown Labs and Third Derivative. The firm's small partnership relies on technical founder referrals rather than intermediary-driven processes or auctioned rounds.

Lacuna invests exclusively through direct equity positions in portfolio companies. Public records show no evidence of fund-of-funds activity, LP commitments to third-party vehicles, or secondary purchases. The firm structures each investment as a standalone equity round, typically with board representation when leading.

The firm deliberately avoids enterprise software, carbon-accounting platforms, and marketplace models that do not involve physical infrastructure. Lacuna also does not invest in oil-and-gas transition companies that maintain legacy fossil-fuel revenue streams alongside clean-energy divisions. Its thesis requires a full replacement of carbon-intensive incumbents.

Lacuna regularly co-invests alongside specialist climate VCs, family offices with energy backgrounds, and mission-aligned foundations. The firm has led rounds with co-investors drawn from its network of technical due-diligence partners, preferring syndicates that can contribute domain expertise alongside capital.