P376 Apr 2026

Understanding P376: The Shift to Baselining in Energy Settlement Introduction

Providers still submit an FPN to National Grid (NGESO) so the grid knows what to expect in real-time. Understanding P376: The Shift to Baselining in Energy

While the energy modification is the most prominent "P376," the term may appear in other niche contexts: This looks at a site’s historical behavior to

P376 ‘Utilising a Baselining Methodology to set Physical ... - Elexon Implementation Timeline Proposed: December 2018

Instead of using that potentially inaccurate FPN, Elexon now uses a Baselining Methodology . This looks at a site’s historical behavior to calculate what its energy flow would have been without the intervention, ensuring more accurate compensation. Key Features of P376

P376 solves this by "decoupling" the data used for grid instructions from the data used for payment.

By reducing financial risk, P376 encourages more independent aggregators and customers to participate in the market, leading to a more efficient and lower-cost transmission system. Implementation Timeline Proposed: December 2018. Approved by Ofgem: August 6, 2021. Go-Live Date: February 23, 2023. Other Potential Meanings