Ofgem Licensing, Exemptions and Registrations: What Small-Scale Generators and Investors Should Understand

Ofgem regulates licences for generation and supply in Great Britain, overseeing the conditions under which generators can operate and sell electricity. Not every small generator needs a full generation licence; there are statutory exemptions and simplified routes for micro and small-scale assets, which can reduce administrative burden but do not remove the need to register with system operators and comply with network requirements.

Beyond licensing, operational registrations—such as those with the national balancing and settlement arrangements, distribution network operators (DNOs) and data registries—determine how a generator’s output is measured, settled and paid. Small generators typically rely on aggregators, licensed suppliers or market participants to access wholesale and corporate offtake markets. The choice of route to market affects credit arrangements, timing of payments and revenue certainty.

Ofgem decisions on licence conditions, metering requirements and market arrangements shape the economics of small projects. For investors, the practical implications are due diligence on whether a project is operating under an exemption or a full licence, the presence of aggregator or supplier contracts, and the registration status that enables market participation and export payments.

For retail investors buying fractional stakes in UK renewable assets, confirming the licence or exemption status and the intended commercial route to market is a material part of risk assessment. Platforms and fund documents should disclose which licences, registrations and commercial partners underpin expected revenues and any dependencies on aggregator or offtake counterparties.