Internal knowledge tool

Make sense of the mechanisms
reshaping the GB power market.

A self-contained, interactive briefing on the policy instruments shaping Great Britain's electricity market — the context behind each, why government built it, how the mechanism works, and the data to read the results as they evolve.

Renewables support

CfD & the Wind Auctions

Contracts for Difference and Allocation Rounds AR1–AR7 — how strike prices collapsed, why AR5 cleared zero offshore wind, and how each round compares to the last.

Explore round-by-round →
Network charging

TNUoS Reform

Transmission charges, locational signals and the reform debate — why northern generators pay more, and what the proposed changes mean for siting and bills.

Open topic →
Security of supply

The Capacity Market

How GB pays for firm capacity to keep the lights on — T-4 and T-1 auctions, clearing prices over time, and what each year's results signal.

Open topic →
Long-duration storage

LDES Cap & Floor

The new cap-and-floor regime for long-duration energy storage — why it exists, how the revenue guarantee works, and the first allocation window.

Open topic →
The big picture

The GB market — from investment to real time

Every revenue stream sits at a different distance from delivery — from auctions years ahead to balancing in real time. Select any block to see who runs it, who can earn from it, and how close to real time it sits.

Further from delivery Real time · delivery →

Which technologies can earn from which revenue streams?

Illustrative overview of typical GB practice — hover any cell or column header for detail. Column headers link to the topic pages where we go deeper.