Finance

British grid warns of tight electricity supplies on Wednesday evening

Published by Global Banking & Finance Review

Posted on January 8, 2025

2 min read

· Last updated: January 27, 2026

Add as preferred source on Google
Graph illustrating the 7% cut in UK energy price cap impacting millions - Global Banking & Finance Review
This image depicts the recent 7% reduction in the UK energy price cap, highlighting its impact on household bills. With energy prices falling, millions of Britons are set to benefit, although future price volatility remains a concern.
Global Banking & Finance Awards 2026 — Call for Entries

UK Faces Tight Electricity Supplies on Wednesday Evening

By Susanna Twidale

LONDON (Reuters) - Britain's National Energy System Operator (NESO) has warned of tight electricity supplies on Wednesday evening and urged utilities to make more power available.

The NESO is responsible for maintaining Britain's power supply and has a range of measures available to ensure there is enough electricity to meet demand.

Late on Tuesday, with much of Britain entering a cold snap, it issued an electricity margin notice asking generators to make more power available on Wednesday evening.

At 1200 GMT, it said there could still be a system margin shortfall of 1,120 megawatts compared with the amount it would like to be available.

It also issued a capacity market notice but cancelled it shortly after.

Under the capacity market scheme, generators are paid to make sure power generation is available at times when demand is high.

"These notices do not mean that electricity supplies are at risk or that there is not enough electricity to meet demand," a NESO spokesperson said in an emailed statement.

"Both of these notices are part of NESO's operational toolkit and are routine tools used most winters."

(Reporting By Susanna Twidale; Editing by Bernadette Baum and Kevin Liffey)

Key Takeaways

  • NESO warns of tight electricity supplies on Wednesday evening.
  • Utilities urged to make more power available amid cold snap.
  • A shortfall of 1,120 megawatts is anticipated.
  • Capacity market notice issued and quickly canceled.
  • Routine operational tools used by NESO in winter.

Frequently Asked Questions

What is the main topic?
The article discusses the UK's National Energy System Operator warning about tight electricity supplies on Wednesday evening.
Why is there a warning about electricity supply?
The warning is due to increased demand during a cold snap, leading to a potential shortfall in electricity supply.
What measures are being taken?
NESO has issued an electricity margin notice and a capacity market notice to ensure sufficient power availability.

Related Articles

More from Finance

Explore more articles in the Finance category