Appleby Advises BigSur Energy on Series B Fundraising
The Appleby venture capital and technology teams in the Cayman Islands, led by Marsha Williamson and Peter Colegate, advised BigSur Energy on the closing of its Series B fundraising round.
The US$11.5 million round at a valuation of over US$90 million brings the company’s total capital raised to more than US$20 million. The funds will be deployed to drive expansion across the United States and prepare for expansion into Argentina later in 2026.
Operating from 14 sites across Texas and Louisiana, BigSur Energy transforms stranded or vented gas into a valuable power source for data centres powering Bitcoin mining. By decoupling from conventional distribution infrastructures, the company’s model enables the direct conversion of low-value stranded gas into high-value digital assets with low-cost electricity for powering high‑performance computing tasks.
The Appleby team also supported the BigSur team on its Series A funding round in summer 2025. Partner Dean Bennett, who leads the venture capital team, is a long-standing adviser to the founders of BigSur.
Latham & Watkins LLP represented BigSur Energy on the US legal aspects of the funding round.
Our technology and venture capital practices
Our technology and innovation team in the Cayman Islands is a full-service technology practice, spanning corporate, commercial, regulatory, intellectual property and data protection. Our clients include Tech Giants, telecoms and satellite providers, software companies, fintechs and technology investors.
As part of our technology and innovation team, our team is ranked Band 1 for FinTech in the Chambers FinTech Legal Guide. We regularly advise businesses on the regulatory scope of the virtual assets regime and potential exemptions, steering clients through the CIMA application process and their ongoing regulatory obligations. We work with first-time founders through to some of the world’s largest cryptocurrency exchanges.
Alongside regulatory advice, we support with initial structuring, entity formation, establishing by-laws and governance structures, token launches and other fundraising and investments, services agreements, software development and IP licensing arrangements. We also work with crypto-focused investment funds and other investors across their digital assets investments and tokenized fund projects.
Our venture capital team – part of our Band 1-ranked corporate team – advises ventures on all stages of structuring, early-stage and growth investments and exits (including deSPACs and IPOs), as well as equity incentive plans. On the investor side, we also advise VCs, corporates and other investors on diligence and execution of investments into start-ups and scale-ups, with extensive experience supporting investments into crypto, web3 and other technology targets and Latin America-based ventures.
