Finite Power Source meaning

In legal practice, a finite power source describes a non-renewable, hydrocarbon-based energy source whose reserves are depleted by use. It typically covers fossil fuels such as crude oil, natural gas, coal and petroleum products (including diesel, petrol and LPG), and may include peat where expressly stated. The term is descriptive rather than a defined statutory concept; legislation in the UK and Ireland more commonly uses “fossil fuel” or “non-renewable”, and contrasts these with “renewable energy”. Key legal features include carbon intensity, exposure to emissions trading/carbon pricing, and regulation through licensing and environmental permitting, alongside potential decommissioning and pollution liabilities. The term is often used in energy supply agreements, power purchase agreements, planning and environmental consents, procurement and ESG policies, green lease clauses and financing covenants to restrict, phase out or disclose reliance on such sources. Usage is broadly consistent across England and Wales, Scotland, Northern Ireland and Ireland. Nuclear power is non-renewable but not hydrocarbon-based; whether it is treated as a “finite power source” depends on the drafting. Best practice is to define the term expressly.