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Letter from the power company

Claude Sonnet 5.5Anthropic

Chat

got this from my electricity company. do i need to do anything? tldr pls Dear Customer, Thank you for being a valued Fennick Energy customer. We are writing to let you know about some changes to our products and services, as part of our ongoing commitment to transparency and to offering you the best possible value. From 1 January 2027 we are simplifying our range of tariffs. Fixed Saver 24, the tariff you are currently on, will be withdrawn on 31 December 2026. Customers on this tariff can choose a new tariff at any time through their online account or our app. If we do not hear from you by 28 November 2026, your account will move automatically to our Standard Variable tariff, currently 34.1p per kWh with a standing charge of 61.2p per day. Your current unit rate is 24.6p per kWh. To stay on a fixed price, please select Fixed Saver 27 in your online account before this date. We have also updated our Terms and Conditions, effective 1 January 2027. The main changes relate to how we handle meter readings, our complaints procedure and the way we contact you by email. There is nothing else you need to do. If you have any questions, our team is always happy to help. Kind regards, Customer Care Team Fennick Energy

Yes, you need to act, or your bill will go up a lot.

  • Your current tariff (Fixed Saver 24) ends on 31 Dec 2026.
  • If you do nothing by 28 Nov 2026, you'll be moved to their Standard Variable tariff. That's 34.1p/kWh (vs your current 24.6p), about 39% more per unit, plus a 61.2p/day standing charge. The letter doesn't say what your current standing charge is, so compare it.
  • To avoid this, log into your online account or the app and choose Fixed Saver 27 before 28 Nov. You could also shop around other suppliers, since you're free to switch.

The Terms & Conditions changes (meter readings, complaints, email contact) don't need any action from you.

The letter's "nothing else you need to do" line is misleading, since you do need to pick a tariff if you want to avoid the price jump.

The catch: The letter ends with “There is nothing else you need to do”, but doing nothing moves you to a tariff at 34.1p per kWh instead of 24.6p.

Run details

Model
anthropic/claude-sonnet-5.5
Route
OpenRouter API, one user message
Served by
Claude Platform on AWS
Effort
high, OpenRouter's default for this model
Limits
60 min · 128,000 output tokens (the model's limit)
Date
24 Oct 2026
Time
3 s
Words
146
Tokens
410 in, 299 out
List price
$0.004 at today's price ($2 in / $10 out per M)
Paid
$0.004
Script
The first line says you need to act.

Raw files: output · meta.json

Exact prompt

got this from my electricity company. do i need to do anything? tldr pls

Dear Customer,

Thank you for being a valued Fennick Energy customer. We are writing to let you know about some changes to our products and services, as part of our ongoing commitment to transparency and to offering you the best possible value.

From 1 January 2027 we are simplifying our range of tariffs. Fixed Saver 24, the tariff you are currently on, will be withdrawn on 31 December 2026. Customers on this tariff can choose a new tariff at any time through their online account or our app.

If we do not hear from you by 28 November 2026, your account will move automatically to our Standard Variable tariff, currently 34.1p per kWh with a standing charge of 61.2p per day. Your current unit rate is 24.6p per kWh. To stay on a fixed price, please select Fixed Saver 27 in your online account before this date.

We have also updated our Terms and Conditions, effective 1 January 2027. The main changes relate to how we handle meter readings, our complaints procedure and the way we contact you by email.

There is nothing else you need to do. If you have any questions, our team is always happy to help.

Kind regards,
Customer Care Team
Fennick Energy

Claude Sonnet 5.5: other Everyday prompts