I’m Mick Wall, and I started this site back in 2019 as a hobby project to make Octopus Energy smart-tariff data easier to understand.
Using Octopus Energy’s open APIs, the site collects and summarises both historical and daily pricing data for popular tariffs. Use the dedicated Energy Tariff Page to discover and explore all this information.
We have had a 5kW Vaillant Heat Pump installed since 2022 which has lead to a plethora of articles, help guides, tools and calculators. Most of which you can find in the dedicated Heat Pumps Explained area.
I also share my own renewables journey, from solar PV and home batteries to heat pumps (the holy trinity), EV charging, and more. My writing has even led to features on BBC News, the Heatio Home Energy Show, BetaTalk, Gary Does Solar and other podcasts.
Read my blog posts here or learn more about me.
Homeowners who join Octopus Energy using my referral link get £50 free credit after signing up. Business users get £100 free credit, and if you’re looking at solar or a heat pump, there’s also a £100 gift card through Octopus Tech. Finally, a £25 gift card can be claimed when having an EV charger installed through Octopus.
Energy Tariff Data
This section brings together everything on Energy Stats UK that relates to Energy tariff pricing.
Because the UK electricity market is split into 14 DNO regions, prices vary depending on where you live. To reflect that properly, most smart tariffs on the site have a separate page for every region, so you are always looking at real prices for your area rather than a national average.
The site currently covers all the main Octopus tariffs, including Agile, Go, Intelligent Go, Cosy, Tracker, Flux, Intelligent Flux, business shifters, and export tariffs, with graphs and supporting explanations for each.
There is also a broader smart tariff overview page if you want a plain English explanation before getting into the numbers.
As well as an in-depth look at underlying wholesale energy pricing, which underpins the majority of the time of use tariffs.
Beyond the charts you see on the site, there is a large amount of raw data available too. You can download historical pricing data in CSV format going back to 2018 for all regions, which is useful if you want to run your own analysis.
Daily pricing graphs for Agile, Tracker, and related tariffs are also shared each afternoon on social platforms including Twitter / X, Bluesky, Mastodon, and LinkedIn, showing what the next day looks like at a glance.
For people who want more control, the site also offers user configurable dashboards where you can pick your region, time range, and tariff to explore the data in more detail.
The Energy Tariff Data page acts as the starting point for all of that, with links out to the individual tariff pages, downloads, and tools.
Energy Tariff Data
Heat Pumps Explained
We have lived with a 5 kW Vaillant aroTHERM heat pump since October 2022. Over that time, it has given me plenty of hands on experience of what day to day heat pump ownership actually looks like, and how it works alongside solar PV, home batteries, and time of use electricity tariffs.
That has meant a lot of data, plenty of lessons learned, and a growing list of practical do’s and don’ts. Just as importantly, it has given me the time to understand what really makes a heat pump perform well in the real world.
As a result, I have written a large number of articles, guides, tools, and calculators, all based on real measurements rather than theory.
You can find them all on the Heat Pumps Explained landing page.
Vaillant Arotherm Heat Pump Guide
Having owned our Vaillant Arotherm 5kw Heat Pump since 2022 means I’ve been able to collect a lot of knowledge about the unit and how it performs.
The blog section of the website is full of various Arotherm related material, but the information is spread across many articles.
So this has been all pulled together into one single article called: Vaillant Arotherm Heat Pump Guide
If you own a Vaillant Arotherm Plus heat pump—or are considering one—this article will help you get the most out of setting up, monitoring, and fine-tuning.
Recent Blog Articles
Referral information and free credit offer
If you find Energy Stats UK useful, there are a couple of easy ways to support the site and help cover hosting and server costs.
Thinking about switching energy suppliers?
Homeowners who join Octopus Energy using my referral link get £50 free credit after signing up. Business users get £100 free credit, and if you’re looking at solar or a heat pump, there’s also a £100 gift card through Octopus Tech.
Finally, a £25 gift card can be claimed when having an EV charger installed through Octopus.
Or, if you just want to say thanks, you can buy me a coffee.
You can also see more ways to support the site here via the likes of Plusnet broadband, Smarty Mobile, Havenwise remote heat pump control, Hetzner Cloud hosting and more.
Follow @energystatsuk on Twitter / X, Bluesky and Mastodon for daily tariff graphs and updates.
Note: The current and past performance of energy pricing is not necessarily a guide to the future.
