Solar & Powerwall without DNO?

[ExeCuteUK]

Hope some people can help me.

Ive had a company in Essex fit a 6kw solar array, tesla powerwall 2 and gateway onto my house.

I've had all the pack come through, mcs certs etc but no DNO auth.

I've been chasing them since May for the dno but they're saying it can take months and they're chasing UK Power Networks. After reading about it looks like with this kind of install this should have been done prior before install?

Any help on where I stand and any issues that will arise would be appreciated.

I'm worried the installer are not being fully truthfull with me.

 

[btc1k]

Have you contacted the DNO?

 

[phil4]

It depends on how much you're exporting. If it's capped at something like 3.6kW, then you just need to notify the DNO after install.

If you're exporting (or able to export), 6kW as per your solar array, then you should have had a G99 approval from the DNO before anything was fitted.

The DNO can take a long time to respond, but that's with the G99 approval, not the notification. There is a possibility the DNO may come back and either reject or insist on a cap for your export. Or any other manner of restrictions etc.

Good luck.

 

[Fred2]

The DNO have a duty to respond to such requests within 11 weeks - when I did this a few years ago it was a bit under, but yeah it's not quick.

 

[ExeCuteUK]

Have you contacted the DNO?

I have not, the company installing was taking charge of everything from order to install.

The DNO have a duty to respond to such requests within 11 weeks - when I did this a few years ago it was a bit under, but yeah it's not quick.

OK, my installer claim to have submitted DNO request on 26th may. Should I just sit tight for a while ?

Im just dissapointed as I wanted to switch to the Tesla Energy plan @ 11p in/out but now its gone up to 22/22 with a much higher daily standing

 

[ExeCuteUK]

If you're exporting (or able to export), 6kW as per your solar array, then you should have had a G99 approval from the DNO before anything was fitted.

I guess I peak around 5kw coming in, so capping export to 3.6 isnt the end of the world.

No G99 was done, I had no idea how any of the process worked so assumed the installer would be taking charge of all this.

 

[Mrklaw]

I thought Tesla powerwall was one of the few that is registered with DNO as capable of limiting export to the grid so only needs a notification?

 

[Lx2m3]

Hope some people can help me.

Ive had a company in Essex fit a 6kw solar array, tesla powerwall 2 and gateway onto my house.

I've had all the pack come through, mcs certs etc but no DNO auth.

I've been chasing them since May for the dno but they're saying it can take months and they're chasing UK Power Networks. After reading about it looks like with this kind of install this should have been done prior before install?

Any help on where I stand and any issues that will arise would be appreciated.

I'm worried the installer are not being fully truthfull with me.

I too am in a similar situation just had completed installation of solar and Powerwall.
Octopus stated that they require:
MCS certificate details.
Confirmation letter or email from your Distribution Network Operator (DNO) that they have been notified of your installation.
(Your Distribution Network Operator has to be informed and agree to a microgeneration system (including battery storage) being connected - usually your MCS registered installer will have done this through a G59, G83, G98 or G99. Your DNO should then have sent back a letter or email to confirm they received and processed the notification form).

Your installer is responsible for this process, but you could chase progress by contacting the DNO.
I think installers are so overloaded that paperwork gets pushed back.
I’m hopeful that I will get completion in a week or two.

 

[RedMod3]

I thought Tesla powerwall was one of the few that is registered with DNO as capable of limiting export to the grid so only needs a notification?

My two Powerwalls are coded not to export any to the Grid; in any case, I'd consider myself to be a failure if I export much to the grid. Last month I gave them 6kWh; this will be much less in future.

 

[phil4]

My two Powerwalls are coded not to export any to the Grid; in any case, I'd consider myself to be a failure if I export much to the grid. Last month I gave them 6kWh; this will be much less in future.

My G99 approval also states that... PW can't export to the Grid.

Reading between the line's its something to do with battery power not being considered green (after all, could have been charged from dirty mains), so the network doesn't want it.

 

[RedMod3]

My G99 approval also states that... PW can't export to the Grid.

Reading between the line's its something to do with battery power not being considered green (after all, could have been charged from dirty mains), so the network doesn't want it.

Not sure, but every kW exported has an opportunity cost that I'm desperate to avoid.

 

[phil4]

Not sure, but every kW exported has an opportunity cost that I'm desperate to avoid.

I'm with you on that... if I can use a unit that would cost me 40p if I imported, I'd rather do that than gain 4p selling it.

 

[novemberRomeo]

..or switch to the Tesla Energy Plan, and then the export rate is the same as the import rate =)

 

[btc1k]

..or switch to the Tesla Energy Plan, and then the export rate is the same as the import rate =)

But at 24p, if you have the battery, mostly better off at staying with a discounted TOU tariff...

 

[novemberRomeo]

Well it depends on everyone’s individual use case. If for example you use a lot of electric during the daytime (eg heat pump in the winter) then TEP may still be cheaper. Everyone has to do their own maths…

 

[btc1k]

Well it depends on everyone’s individual use case. If for example you use a lot of electric during the daytime (eg heat pump in the winter) then TEP may still be cheaper. Everyone has to do their own maths…

For sure.... and that's the primary use case I'd have thought.

Does feel overall, that TEP is becoming more marginable as a benefit though at 24p...

 

[phil4]

Cant' do TEP here as DNO have said 0 export from Battery.

 

[Lx2m3]

Cant' do TEP here as DNO have said 0 export from Battery.

How can the DNO know the source of the export? Apart from being not daylight hours.
I’m on Octopus Go Faster at present as I’m still on the low rate tariff until May, but was planning going onto TEP afterwards.
Will that involve another application to DNO?

 

[PITA]

How can the DNO know the source of the export? Apart from being not daylight hours.
I’m on Octopus Go Faster at present as I’m still on the low rate tariff until May, but was planning going onto TEP afterwards.
Will that involve another application to DNO?

From what I understand the Tesla Powerwalls only export during the day, potentially in addition to your Solar

 

[KennethS]

From what I understand the Tesla Powerwalls only export during the day, potentially in addition to your Solar

We’re on the TEP and our Powerwall discharges starting at 4pm daily until it reaches its set reserve of 20%. So ours does export into the evening.