Another massive Electricity Bill

Are you submitting readings / have a smart meter; or were one or both bills estimated?

Do you have a well water pump by any chance that could be malfunctioning?

When i sent them a reading it was way below the estimate, so they applied a low usage charge, so ended up paying an extra 2.50 when i thought i was due a refund.

And how have you been heating water recently?

I thought mine was bad at €230 with a BEV & WFH, that's crazy money something must be drawing a lot of power.

Forget that red herring about who your provider is and just, for now, look at the units you are using to reach that cost.

I had a PV solar panel system installed towards end of April.

My bill in 2021 for 2 months of June & July was €268. My bill for the same period in 2022 (since panels were installed) was €68. The saving of €200 in a 2 month period has exceeded my expectations of the system. The kWh data usage over both years for the same period is represented on my most recent bill which arrived this week.

This

How many kWh are used and what type of meter are the key

After that start looking around at what is consuming electricity

For the sake of comparison, I've 2 EVs, a heat pump and electric cooking and I'm paying €182 per month, so €364 per billing cycle

I would average around 1,000kWh per month roughly 40% on night rate

OP mentioned electric heaters and coolers not being used, so unless the immersion has been on the whole time it seems like either very high usage or they're being fleeced on price

The circular thing is the controller for the night storage heater I think. It's a bit like one of those mechanical timer plugs, it'll spin throughout the day and will switch between the day and night meters

I think you should look through your previous bills and to find the recent 2 actual readings. They might have an A beside the reading, estimated readings should have an E beside them

Use that to work out your daily average kWh usage