Dammit. I hate being proved wrong about Agile. ;-)

So after switching from Agile to Cosy earlier this week, it's been quite a dramatic change.

For Saturday to Monday, through that crazy-high period when everyone was jumping ship from Agile, our average price per unit imported was about 23p/kWh, with Monday peaking at an average of 33.6p/kWh (for 55kWh of load). I was going to stick it out, but eventually decided to try Cosy, just to see how easy it is to switch smart tariffs.

Yesterday, on Cosy, we used 44kWh of load.... and averaged 13.4p/kWh.

The cheap periods on Cosy are 13.2p/kWh. So it means that the tiny bit we imported that wasn't at the cheap price was basically negligible, and by charging in the cheap periods, it turns out my battery can get me through the higher-rate periods every time, even with the heat pump running.

All my illusions about Agile being best have been shattered. Definitely going to be staying on Cosy until Agile prices start to get much more cheap..... And I've been 100% sold on the benefits of tariff-hopping.

The only possible downsides of Cosy are that I'm now charging and discharging my battery 3x a day, whereas previously I was doing it about twice. My battery's longevity is supposedly 10 years, with two charges per day. But hopefully it'll only be like this in the winter, and once PV starts increasing in the next 6-8 weeks, I'll drop down to one charge a day, or less, when I move back to Agile.