Solar and home charging (UK)

[eddieterry]

Agreed.
My system is old on an old house with a complex roof so I only generate a peak of about 3.25kW by now BUT I am paid around £0.61 per kWh whether I use it myself or not.
I just leave it on standard tarrif and charge when I want, particularly leaning towards sunny days.

I don't do enough miles for it to be more than a financial pimple on costs.

Exactly my position.

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[Midlifecrisis]

Yep, and Zappi is very very good at that. However, Octopus Intelligent tariff gives you 6 hours of 7.5p/Kwh overnight plus 15p/Kwh for export. So it’s better to export your solar and charge overnight currently. Plus, it can give you extra hours at the low rate to charge. Yesterday I got the 7.5p rate between 18:30 and 08:00.
I have a Tesla Powerwall too, so 99% of my use can be on the low rate

I’ve wired my Zappi to be ‘grid side’ of the Powerwall - so the battery will never be used to charge the car.

use yesterday according to Powerwall:

Grid use according to Zappi:

Your graphs look similar to mine although my batteries are DC side. I got my bill yesterday… 10kWh daytime usage for the month and 788kWh for the night time. Great tariff!

 

[W1NGE]

No but it looks interesting. It would be nice to have something that was clever enough to efficiently manage everything and had an intuitive interface

A HEM is what you need.

 

[taycan2024]

Have a look at https://evcc.io/

 

[kempez]

A HEM is what you need.

So does that go just before the smart meter on the consumer side?

 

[W1NGE]

So does that go just before the smart meter on the consumer side?

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