Just got a 17000 kwh/pa bill!

[michael8554]

1. The meter is straight after the fuse, so should only be reading the electricity you actually use.
Do you suspect the meter is incorrectly reading your usage ?

2. From 20 Dec when the meter was installed, to 28th Feb, you have used 4651kWh.
That's 78kWh per day.
Over a year that would be 38,000kWh.
If you don't use any in the summer let's half that to 19,000kWh.
They say 17,000kWh - close ?

3. The CT is positioned to measure your total grid draw through the Consumer unit.
That's any grid used to charge the battery, all the heat pump draw, and any remaining house load.
The CT cable goes to the inverter ?

3. Whenever someone says one measurement is half the other I suspect the CT needs to be reversed.

4. I'd be embarrassed to show images of an installation that messy on this forum........ :-<

 

[nicebutdim]

4. I'd be embarrassed to show images of an installation that messy on this forum........ :-<

Worth remembering the OP is a consumer and not the installer.

 

[Murdoch]

So no night “control” for anything specific.

Do the bills you get show day and night rate numbers?

Sounds like you have been backed into a corner, so take readings WEEKLY and make sure that any bills are actual readings and not estimates.

Record these figures on a spreadsheet and do this from now on. Then you’ll get the facts

Also record the meter readings on the meter to the left of the fuseboard

The suppliers take advantage of people who don’t keep on top of their bills , readings etc

 

[Murdoch]

Just wondered how our growatt app can be sooooooooo wrong ! Only 2 of us live here

Ignore the great app, that’s not what the supplier uses to bill you

Could you post a photo with the cu flap open ?

 

[ProDave]

2. From 20 Dec when the meter was installed, to 28th Feb, you have used 4651kWh.
That's 78kWh per day.

In the same period I used 22kWh per day. All electric house with heat pump and solar PV but no batteries.

How big is the house? how new? When was the heat pump fitted and what was heating the house before? If it was gas, what was your annual gas usage?

 

[clairetr]

The problem is we have had that many meters in the last 2 years I have no idea what's right or wrong. Similarly with bills. I have 50 bills for the same period. With differing calculation as meters have been faulty so they amend the numbers all the time.
Ct cable goes direct to inverter.
How can the app be 100 per cent wrong. Three meters broken and the other drama. Just makes me wonder if something else is wrong. I just wanted to pay someone to check the whole thing so I know its right. The night rate is for charging the batteries.
I wish I could find the best tradespeople to do a clean and tidy job. But thanks for pleasant note Michael, made my day. And thanks everyone else for trying to help

 

[clairetr]

In the same period I used 22kWh per day. All electric house with heat pump and solar PV but no batteries.

How big is the house? how new? When was the heat pump fitted and what was heating the house before? If it was gas, what was your annual gas usage?

All electric, solar and batteries. 220 sqm. Old but well insulated everywhere, fully d/g. Log burners. Gas before. We changed all radiators at ashp installation. Was about 70 a month in winter for gas and electric before install. Now they want 300.

 

[Murdoch]

3 meters?

Where is the 3rd meter

£70 per month for gas and electric is no way enough

 

[clairetr]

Also right at this second we have full batteries and are exporting 1kw to grid...

 

[clairetr]

3 meters?

Where is the 3rd meter

I mean the meters have been replaced 3 times sorry

 

[Murdoch]

I mean the meters have been replaced 3 times sorry

So keep weekly records of the supplier meter AND the PV generated lecky

Could you post a photo of the CU with the flap open?