Guides, insights, and honest analysis for households with solar, batteries, EVs, and heat pumps.
GivEnergy moved to paid cloud in April 2026. Thousands of batteries are now charging at default times on Octopus Agile — and losing hundreds of pounds a year because of it.
Plugging in when you get home is the most expensive habit an EV owner on Octopus Agile can have. Here is exactly what it costs.
Agile is the highest-ceiling tariff in the UK. It is also the wrong choice for a significant number of households. Here is the honest breakdown.
At 3p per kWh overnight on Agile, the effective cost of heat pump heating drops to 0.86p per kWh. Cheaper than gas. Here is the maths.
GivEnergy, tado, myenergi, your car app, Octopus. None of them know what the others are doing. Here is what that costs every night.
Your solar installer told you how much the panels generate. Nobody told you that when you export matters as much as how much you generate.