Solar panels electrical connection to mains.

Juts drink the koolaid and Believe In Solar Energy.

Like everyone else does.

That's a typically unhelpful reply from TNP.

My understanding is that there is no longer a Feed In Tariff for newly installed solar panels. Most installations either use Lithium batteries to store excess energy or use it to heat up your hot water tank.

Via a live 13A plug? I hope not, switched FCU would be better, on its own MCB in the CU even better.

That's the inverter's job, it makes sure its output is fractionally higher voltage than the mains, but lots of meters won't actually count backwards, electronic ones may display RED (reverse energy detected)

You wouldn't need permission for a micro-inverter (since it's below 16A per phase) but you need to buy a type approved inverter

And notify the DNO via a G98 form before fitting

Not by that name, however there is a Small Export Guarantee, which pays somewhere between f*ck all (1.0p/kWh) and 15p or 34p for some Octopus tariffs (read your own small-print).

I tried a couple of dozen download links across multiple pages and all resulted in a 404. Do any work for you?

I live and learn:

It looks borked to me.

No, but they used to a few months ago ...

Not forgetting to establish what the tariff may be when you are importing.

I was under the impression that the installation had to be signed off if the electricity was to be exported to the grid and in practice finding anyone that would be willing to sign off a DIY installation was close to zero.

G99 systems (over 16A per phase) permission needs to be applied for, G98 it's only a case of notifying them.

It needs to be signed-off by an MCS installer if you want to be paid under the SEG scheme, and yes, they are highly unlikely to sign-of a DIYed installation, but the best plan is to make sure you use all your own electrons, and don't export anything ...

that is my understanding too....

However, if you also had battery storage, you could hopefully get away with not exporting, but using the battery where either the load exceeds the solar PV output or where there is no sun and this reduce your electricity consumption from teh grid.

Do you still need to do the g98 et al rigmarole as the only net effect on the grid is that you consume less electricty instead of exporting it.

Yes, because the DNOs don't want your inverter zapping their repair bods if the power goes off ...

...or overloading the substation on a sunny summer's day if a number of roofs are exporting, which is why you have to seek permission to have generation capacity of more than 3.6kW installed.

Also, while a qualified electrician can sign off an installation, for SEG you still require him to be Microgeneration Certification Scheme accredited else you get nothing for export.

Green energy firms die as as fasts as the latest bullshit about green energy gets exposed.

It's not a manufacturer specific site, here's a different page that isn't b0rked

What I can't get my head around is surely the energy will flow back though the local 415/11kV transformer, into that system, and then the

I suppose a substation feeds in the order of a few tens of houses, each with the capability of demanding 60-100 amps but the diversity of consumption means that the average load for each house at any moment is say ~4kW. So the substation can deliver 4kW times the say 30 houses on each phase on the 240V side of the transformer. Above that and the voltage goes down until there is a brown out I suppose.

OTOH if a large number of houses have micro generation and that exceeds the 4kW each the 240V side of the substation could become overloaded if there is little demand from other houses on the phase.

Not a problem at current levels of home generation but...

One thing we do know about renewable generation is there is no incentive on any of the distribution network to increase capacity because we have a dysfunctional pricing system that assumed gas prices should dictate a baseline amongst other anomalies like charging grid interconnected storage both ways for transmission.

My annual electrical consumption is 2628 kWh, so an average of 300 W.