Half-Hourly Matching & Licence Exempt Supply: A New Era for Renewable Energy Buyers and Generators
The UK renewable energy market is rapidly evolving, with half-hourly matching and Licence Exempt Supply (LES) emerging as two of the most important developments for businesses seeking truly traceable clean electricity. Driven by growing pressure for transparent carbon reporting and enabled by P442, suppliers are now beginning to launch products that match renewable generation and demand on a half-hourly basis, creating new commercial opportunities for generators and large energy users alike.
What is Half-Hourly Matching?
Traditionally, renewable electricity claims have been based on annual matching—meaning a business could claim renewable power even if the energy was generated at completely different times to when it was consumed. Half-hourly matching changes this by aligning electricity generation and usage in 30-minute settlement periods, providing a far more accurate picture of when renewable power is actually being consumed. This approach is becoming increasingly important as carbon reporting standards evolve and businesses seek stronger evidence of renewable sourcing.
For generators, half-hourly matching creates an opportunity to sell power at a premium to businesses that value traceability and verified carbon reductions. Rather than exporting electricity anonymously into wholesale markets, generators can now participate in arrangements where their output is directly linked to customer demand in real time.
How P442 Changed Licence Exempt Supply
A major breakthrough came with P442, which was implemented in February 2025 following approval by Ofgem. The modification introduced a formal settlement process for Licence Exempt Supply through a new role called the Exempt Supply Notification Agent (ESNA). This allows qualifying renewable generation to be correctly identified and exempted from certain industry levies when matched to customer demand on a half-hourly basis.
In practical terms, this means qualifying generators and consumers can avoid charges linked to schemes such as Contracts for Difference (CfD), the Capacity Market, and legacy renewable levies—creating significant commercial savings. However, these benefits only apply when generation and demand are successfully matched during the same half-hour period, making matching quality critical to value creation.
Suppliers Are Starting to Offer Half-Hourly Matched Energy
The market is already moving. Several suppliers and energy platforms are beginning to offer products built around half-hourly matching and traceable renewable supply:
- Good Energy now offers corporate PPA products with half-hourly generation-to-delivery matching, allowing generators to earn additional value through hourly matching credits.
- Conrad Energy has launched Match+, matching business demand with renewable generation on a half-hourly basis to improve transparency and sustainability reporting.
- SmartestEnergy now provides Traceable Renewable Supply, offering half-hourly renewable matching and reporting tools designed to meet evolving carbon disclosure requirements.
- UrbanChain is facilitating private-market renewable contracts where generation and business demand are matched every half hour, helping smaller generators access long-term contracted revenues.
Why This Matters
Half-hourly matching and Licence Exempt Supply could fundamentally change how renewable energy is bought and sold in the UK. For generators, it means stronger routes to market, improved revenues, and access to corporate buyers seeking verified clean power. For businesses, it offers greater energy transparency, stronger ESG credentials, and more credible carbon reporting. With regulatory pressure increasing and supplier offerings expanding, half-hourly matched renewable supply is moving quickly from a niche concept to a mainstream energy procurement strategy.
