27 October 2026
Octopus Happy Hours: Extended!
Happy Hours now run to 14 February 2027. The new token system, 1 November rollover and the limits to check before booking.
Read more →Blog
Articles & comparisons.
Written by the people building Wattlas - independent of every manufacturer it writes about.
1 October 2026
Why don’t the numbers add up to the penny?
Every figure is worked out unrounded and rounded once, when it's shown. Here's why a line can be a penny out, and which to trust.
Read more →1 October 2026
EV tariffs: how do their features compare?
Nine EV plans compared by price, charging hours, home energy and useful extras. Try your usual top-up too.
Read more →30 September 2026
Why doesn’t charging match the bill?
Your charger counts energy going into the car. Your meter counts grid import for the house. A worked example shows why they differ.
Read more →25 September 2026
The questions everyone asks about solar, batteries and heat pumps
Is a battery worth it without solar? Is my quote fair? Should the heat pump stay on all day? Straight answers to what people ask most on UK energy forums.
Read more →25 September 2026
Octopus Saving Sessions explained: Power Downs, Power Ups and Weekend Happy Hours
How the scheme works, who can join, how often the grid has asked for help this year, and how Happy Hours fit in. For the winter token winter rules, see the updated Happy Hours guide above.
Read more →25 September 2026
Fuse Energy review: who are they, and should you switch?
A fast-growing supplier from ex-Revolut founders. What it does differently, what customers and Which? say, and what to weigh before switching.
Read more →7 September 2026
Intelligent Octopus Go: charging outside the cheap hours
A real day's midday charging, extra cheap slots and a free electricity session, with the car and home costs shown separately.
Read more →7 September 2026
Wattlas vs SolarEdge's own monitoring (mySolarEdge): what's actually different
mySolarEdge is free and does real-time, per-panel diagnostics well. Here's honestly what it does, what it doesn't, and where an independent forecast-vs-actual layer on top adds something new.
Read more →Updated 7 September 2026
A GivEnergy monitoring alternative that isn't tied to GivEnergy's own future
GivEnergy entered administration in April 2026 and its app moved behind a new paid tier. What that actually means for your monitoring today, with sources.
Read more →Start monitoring your home energy.
Solar, battery, car charging and energy tariff costs, all in Wattlas.
