**TLDR: yes, act by 28 Nov 2026 — otherwise your bill goes up.**

- Your fixed tariff (Fixed Saver 24) ends 31 Dec 2026.
- If you do nothing, you're auto-moved to Standard Variable at **34.1p/kWh** vs your current **24.6p** — roughly a 39% jump on unit rate (plus 61.2p/day standing charge).
- To stay fixed, pick **Fixed Saver 27** (or any other tariff) in your online account/app before 28 Nov.
- Ignore the "nothing else you need to do" line — that's only true if you're happy with the pricier variable tariff.

**Before you pick Fixed Saver 27, check:**
- Its standing charge, how long the fix lasts, and any exit fees
- Whether other suppliers are cheaper — you're not obliged to stay

Rough scale: on ~2,500 kWh/year, the unit-rate difference is about £240/year extra. Also compare standing charges, since yours isn't stated in the letter.

The T&C updates (meter readings, complaints, emails from Jan 2027) are minor/admin — no action needed there.