Solar & Powerwall 2

[Scouse]

That 5.7kW the max then with two inverters, or can you max one out and continue on the other?

You'd never use 2-3 times it though would ya.

 

[Embattle]

That 5.7kW the max then with two inverters, or can you max one out and continue on the other?

You'd never use 2-3 times it though would ya.

One is 3.7kW while the newer one is 2kW which is setup to lower its output should our export exceed 3.7kW.

I could use more as I would move the EV tails to use it before export. I would get more solar in shorter daylight months, but unless you have a pool, ac, etc you do get diminishing returns.

 

[old.Osy]

So as we head towards what could be the driest spring ever recorded last month's (April 2025) total solar generated ended up at 821.5 kWh with 211 kWh exported, which is enough to boil 70 kettles for an hour. This month (May 2025) could well end up being our first ever 1 MHw month.

April

 

[Scouse]

April

View attachment 50400

So then. How much was your electricity bill?

 

[old.Osy]

April invoice hasn't been issued yet. Amounts in GBP.

March (390 kWh) - 47.52
Feb (721 kWh) - 99.65
Jan (695 kWh) - 96.65

Dec 2024 (793 kWh) - 101.13
Nov 2024 (629 kWh) - 83.37

 

[Embattle]

Global Solar Atlas:

Global Solar Atlas

The Global Solar Atlas provides a summary of solar power potential and solar resources globally. It is provided by the World Bank Group as a free service to governments, developers and the general public, and allows users to quickly obtain data and carry out a simple electricity output...

globalsolaratlas.info

 

[Embattle]

Global Wind Atlas:

Global Wind Atlas

The Global Wind Atlas is a free, web-based application developed to help policymakers, planners, and investors identify high-wind areas for wind power generation virtually anywhere in the world, and then perform preliminary calculations.

globalwindatlas.info

 

[Embattle]

That is a very sunny May over and done with, and the results are in:



So, our first 1 MW month was achieved, although the weather caused some shortfalls towards the end of the month, and the fact that the export reached its cap of 3.7 kW quite often resulted in the second inverter slowing its generation.

 

[Scouse]

the fact that the export reached its cap of 3.7 kW quite often resulted in the second inverter slowing its generation.

You should get standing charge rebates tbpfh. You were ready and able to export more renewable electricity to the grid but afaik renewable energy production fell in Q1 for blighty this year. The grid needs modernising to take advantage of all the good work people are voluntarily doing.

The national grid is a private company and it paid out about £2.6bn in dividends to shareholders last year. By my ready-reckon that's about half of what UK households pay in standing charges in total. The grid needs to take a hit financially for not accomodating generation.

 

[Embattle]

View: https://youtu.be/sUvaYycoWqI?si=cB3Z06dcP6SuHW-k

 

[Scouse]

Fuck me. My standing charge is 70p a day.

It's fucking daylight robbery.

 

[Embattle]

Our standing charges are 65p Electricity and 29p Gas, so not far off a pound every day no matter our usage.

 

[smurkin]

Fuck me. My standing charge is 70p a day.

It's fucking daylight robbery.

I have two standing charges for Leccy - we have an outbuilding with its own supply as it used to e a shop costs a fortune - and its only heated by electricity so I can be paying 50 quid a week on leccy in the dark of winter just to heat my office. As soon as we are off our current fixed rate we'll be shopping for a standing charge free provider.

 

[Embattle]

So figures for June 2023 vs June 2025:

703.3 kWh vs 904.7 kWh

I reckon before the middle of July, we should pass the total energy produced in the entire year of 2023 (4.14 MWh), as we currently sit at 3.8 MWh so far for 2025.

 

[old.Osy]

June.