The Sorry Tale of New Drax OCGTs Highlights Growing Capacity Market Irrationality

Why It Matters

If the Capacity Market cannot reliably deliver new firm generation, UK supply security and investor confidence are jeopardised, prompting possible legal challenges and market redesign.

Key Takeaways

• Drax OCGTs built, lack grid connections.
• Penalties may erase entire capacity payments.
• Capacity Market places connection risk on generators.
• Systemic connection delays deter new gas plant bids.
• Potential judicial review could force market redesign.

Pulse Analysis

The capacity market was conceived as a safety net to attract large‑scale, dispatchable generation that private investors would otherwise avoid. In practice, however, the scheme’s risk allocation forces developers to shoulder the burden of grid‑connection delays, a factor that has historically been considered a manageable inconvenience. Recent experience with Drax’s OCGTs illustrates how this imbalance can turn a contractual obligation into a financial sinkhole, eroding the very incentive structure the market was designed to create.

Grid‑connection bottlenecks are no longer isolated incidents; they reflect broader constraints in the UK transmission system, exacerbated by aging infrastructure and limited upgrade funding. When connection timelines become open‑ended, developers perceive the capacity market as unfinanceable, leading to a decline in bids for new gas‑fired plants. This shift threatens the transition to a lower‑carbon grid, as the system loses a critical source of firm capacity needed to balance intermittent renewables. The asymmetry between domestic generation, which must be fully deliverable, and interconnectors, which are judged on probabilistic availability, further skews market dynamics.

Legal scholars argue that the persistent mismatch between the market’s statutory purpose—ensuring reliable capacity—and its operational reality could constitute irrationality under public‑law principles. A successful judicial review might compel the government to revise the capacity‑market framework, rebalancing risk allocation or introducing mechanisms to guarantee connection delivery. Such reforms would not only protect projects like Drax’s OCGTs from punitive penalties but also restore confidence among investors seeking to supply the next wave of dispatchable power in the UK’s evolving energy landscape.