Geothermal Companies in United Kingdom

UK-based not-for-profit organization advancing geothermal energy development across all four nations. Facilitates industry collaboration, drives policy frameworks, and supports technology transition to unlock geothermal heat and power potential for net zero targets.

Granular Energy provides software solutions for managing and trading clean energy, specializing in Energy Attribute Certificate management for utilities. The platform enables hourly-accurate transparency and traceability of renewable energy sourcing for energy suppliers, traders, and buyers.

Independent London-based specialist financial advisory and investment house serving the European renewable energy sector. Closed 92+ transactions exceeding 10.4 billion, operating across development, construction, and operation phases of renewable projects.

H2osolar is a 19-year-old renewable energy installer specializing in solar PV, solar thermal, and air source heat pump systems across South East and South West UK. MCS certified with domestic and commercial installation expertise.

Research-driven market intelligence company providing insights on global cleantech innovation since 2002. Serves corporations, investors, governments, and policymakers through market intelligence, advisory, advocacy, and events.

UK trade association and membership organisation dedicated to advancing geothermal energy. Acquired by the Renewable Energy Association in 2025, now operates as the Geothermal Energy Forum to promote policy change and industry growth.

CeraPhi is a UK-based geothermal energy company pioneering deep closed-loop systems for heating, cooling, and power generation. Founded in 2020, they specialize in converting redundant oil and gas wells to geothermal energy and delivering baseload renewable solutions globally.

Global energy think tank accelerating the clean energy transition through data and policy analysis. Provides open electricity data covering 200+ countries and tracks coal mine methane emissions.

UK-based drilling company specializing in ground source heat pump and water well drilling services. Over 40 years of experience providing geothermal and water borehole solutions for residential and commercial clients nationally.

Investment management and advisory firm specializing in energy transition, providing capital and expertise across renewable energy and cleantech sectors including solar, wind, hydrogen, and battery storage.

REA is the UK's largest not-for-profit trade association representing renewable energy and clean technology businesses. With approximately 500 member organisations, it advocates for policy and regulatory frameworks supporting renewable energy deployment across electricity, heat, transport, and energy storage.

Berkeley Energy is a private equity investor and developer specializing in renewable energy projects across emerging markets. Founded in 2007, it manages four closed-end funds and operates utility-scale hydro, wind, solar, and battery storage assets in Africa and Asia with deep technical and operational expertise.