Latest energy tariffs released

Last updated: 09/01/2026

Highlighted Tariffs for December 2025

Here are the three most competitive fixed energy deals from different suppliers last month:

• Outfox Energy – Merry Fix-Mas 2025 12M (v2.0)
  Effective: 17 December 2025
  Average Bill: £1,519
  Exit Fees: £75
  Fixed Term: 12 months
  The cheapest deal on the market right now. A great option for anyone looking to lock in a low winter rate with a short-term commitment.

• UW – Fixed Saver 71
  Effective: 18 December 2025
  Average Bill: £1,550
  Exit Fees: £75
  Fixed Term: Until 31 December 2026
  UW’s fixed saver comes with a competitive rate and a longer term, giving you stability through the next two winters.

• E.ON Next – Next Fixed 18m v25
  Effective: 13 December 2025
  Average Bill: £1,554
  Exit Fees: Not listed
  Fixed Term: 18 months
  A solid mid-length fix from one of the big suppliers, ideal if you want protection beyond 2026 without a two-year tie-in.

All tariffs released last month

Here is the full list of energy tariffs that were released in December 2025.

For comparison purposes, energy prices shown above are based on the national averages. Prices may vary depending on the region you live in. To see the best deals for where you are, run an energy comparison using our Ofgem approved energy switching tool.