Exporting at 15p - Help please

[PITA]

Does anybody know if a SolarEdge Inverter can be setup to export only?

Without feeding the house, or Powerwalls?

I want to fill my Powerwalls overnight at 7.5p... and use this storage for the house.

But every single kWh of Solar to export to the Grid at 15p

Any ideas how I could do this?

 

[PITA]

As we've moved over to 15p SEG Tariff today, I'm going to charge the batteries overnight on Time-Based Control to 100%

Then use them during the day tomorrow.

 

[ACarneiro]

When I set the tariff up on my Tesla Gateway, it automatically started doing exactly that.
Charges the battery fully overnight then feeds the house on the battery during the day and all the solar production gets exported.

 

[PITA]

When I set the tariff up on my Tesla Gateway, it automatically started doing exactly that.
Charges the battery fully overnight then feeds the house on the battery during the day and all the solar production gets exported.

Can you show your configuration settings please.

At the moment, my Solar goes straight to feeding the house, or battery.

 

[scdoubleu]

Here’s mine.

Ignore the tariff name - I’m on Intelligent, and I also haven’t adjusted the peak rate to match current value. SEG is with Scottish Power, though looking to switch to Octopus Outgoing.

Powerwall charges to 100% overnight, house is supplied by a mix of solar and PW during the day, with a good chunk of solar going to the grid.

 

[ACarneiro]

And mine

Interestingly, I couldn’t set the export price to be lower than import price at Off Peak time as it gave me an error…

 

[phil4]

As above, I think this all gets done in the PW, not SE.

As above within a couple of minutes of setting the new utility rate yesterday the PW was busy exporting all the solar, and using itself to power the house.

 

[PITA]

Thank you guys... that was the missing link.

I hadn't updated my tariff BUY & SELL prices.

Now it's working perfectly.

God, this is a clever system.

 

[phil4]

God, this is a clever system.

Honestly, it blew my mind when just with one tweak of a price (sale price from 4p to 15p), booom the whole thing just did what I'd want.

 

[browellm]

Honestly, it blew my mind when just with one tweak of a price (sale price from 4p to 15p), booom the whole thing just did what I'd want.

Would this be a Powerwall first?

 

[Chemist]

How are you powerwall owners getting around the battery being dumped when 'intelligent' charging?

 

[YYY2022]

Interested in this too. It’s the only thing that’s kept me on go rather than io.

 

[wriggers]

I set octopus intelligent to finish charging by 5:30, and usually plug the car in before I go to bed (8-10pm). 99% of the time it charges during the cheap hours which I’ve set up in my powerwall, occasionally it’ll kick in instantly.
If it does and it depletes the battery in the couple of hours before the standard overnight rate starts (11:30pm) im getting cheap electric anyway because it’s an intelligent period and I don’t mind using that in the house.
Because I switch IO off in the day though in my octopus app (to use up the sunshine with my zappi) sometimes if I only need a slight top up on a night I’ll leave it off and just do a night time boost charge from the charger.

Not signed up to the 15p yet, because I’m getting an average/low FiT rate from E.on and I don’t want to miss out on the payments from this weeks sunshine whilst I swap over after forfeiting the FiT. I will be doing it on Monday though then it’s all in place.

 

[ACarneiro]

How are you powerwall owners getting around the battery being dumped when 'intelligent' charging?

No straightforward automatic way of solving this problem, AFAIK.
Keep an eye on the charging slots and if you happen to have any outside the 23:30-05:30 times then adjust the Powerwall’s backup reserve manually to prevent it discharging to the car.

It’s a PITA (no, not you), but I don’t think I ever got an “extra slot” yet so I guess it’s unlikely to be a common occurrence.

 

[Burley]

As we've moved over to 15p SEG Tariff today, I'm going to charge the batteries overnight on Time-Based Control to 100%

Then use them during the day tomorrow.

Which supplier is offering you 15p SEG? We’re with Scottish Power which is 12p for non SP importers and 15p if you are..

 

[scdoubleu]

How are you powerwall owners getting around the battery being dumped when 'intelligent' charging?

I wrote a simple program to monitor a couple of Teslamate’s MQTT messages to determine if the wife’s car is at home and charging outside the core offpeak period and, If so, adjust the Powerwall’s standby reserve to 100%. The reserve is dropped back to normal when car stops charging.

Powerwall control is done using a Python script and TeslaPy.

 

[Chemist]

Which supplier is offering you 15p SEG? We’re with Scottish Power which is 12p for non SP importers and 15p if you are..

Octopus to IO users.

 

[ACarneiro]

I guess it may be time for more people to email Greg Jackson ( [email protected] ) to ask about the possibility of integrating the Powerwalls into IO. That would be perfect (and probably help grid balancing even more)…
I did that about a year ago and the answer was that no integration was being planned but then they also said they couldn’t give Outgoing tariffs to IO clients and they changed their mind about that…

 

[browellm]

I guess it may be time for more people to email Greg Jackson ( [email protected] ) to ask about the possibility of integrating the Powerwalls into IO. That would be perfect (and probably help grid balancing even more)…
I did that about a year ago and the answer was that no integration was being planned but then they also said they couldn’t give Outgoing tariffs to IO clients and they changed their mind about that…

You'd be far better emailing Elon Musk, since it's their API that they won't release. Nothing to do with Octopus.

 

[Burley]

Octopus to IO users.

Ooh, that’s interesting, I’d thought they not paid a pittance if you were on one of their smart tariffs. Last time I asked them they said 3p with GO, seems odd they’d offer a huge amount more with IO when the low cost period is 50% longer.