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Good call. One of the four properties here already had panels before I installed mine. I'll have a word. Cheers.

Hi Binky. In short no. My application indicated that we would limit the inverter to 16A backflow. I don't know why it would send anything back.? But the planner said he had modeled the system and the transformer would need updating. We live in a cluster of 4 properties. I can see a small...

Hi all. Just to update. Phone call from the DNO this morning. Our proposal would necessitate the upgrade of the transformer for which we would be charged £6000. Sooooo...We can't have an AC-coupled inverter and the battery. However, microinverters were a no-brainer for us, as our panels face 3...

Application sent today. I had confirmation from the retailer of the battery that G99 certification is not required as it's the inverter that matters. So we'll see if the schematic is acceptable. Also whether I need to make a full G100 application.

In the process of filling in the G99 application A1.1 and would appreciate a few pointers.:unsure:. The application is for a 3kw Solis AC coupled inverter (SOL-3.0K-RAI-48ES-5G-AC-V2) along with a Fox 5.2kwh (LV5200) battery to supplement already installed 3.6kw of solar panels with Enphase...

Ah. Excellent. Thank you so much for that Binky. Mine won't be nearly so pretty. :(

Reply from the DNO. Incidentally, I had to chase and chase it! Yep, they want a full G99 application due to the AC coupled inverter adding to the theoretical export possibility. They want the certification of all the proposed equipment and existing. Also, a full schematic so that they can model...

I think you wont find an MCS installer to sign off work they haven't done. I was told one of their directives is that they aren't allowed to do it.

Thanks for that. I guess if the water heats first that wouldn't be the end of the world. This morning, by around 10am, we were exporting 2.4kw as the immersion was up to temperature.😩. If the battery started charging after that it would have plenty of time to charge.😎.

Still awaiting a reply from the DNO but thought I'd ask a further question regarding installation of battery storage. Initially, I had 8 panels connected to the consumer unit. I added a further 4 panels connected to a sub-panel in an outbuilding on a dedicated RCD. All our panels are on ground...

(y). If I'm allowed by the DNO to have the batteries I have a spare RCD for that as well.

The spur will not be on it's own RCD though. It's a spur off of an existing ring they advocate. Confused.... But anyway, happy mine is to safety standards.:)

Okay. I understand. Fortunately, this is the case with our system. When the installation was connected we had a new consumer unit put in as we were still only protected by MCB's. The solar has a dedicated RCD. How can Plug-in solar get away with saying you only need to connect via a spur?

Really? It's how Plug in Solar tell you how to connect the system. How should they connect?

I don't blame you. £3k takes a bit of recovering. I had resistance from the DNO when I informed them of my installation. They initially said it had to be installed by someone who was MSC qualified. I replied that it had been connected to IET regs. Finally, they accepted it. I can understand the...

The MCS cartel is a joke. Especially if you are using microinverters as they are pretty much plug-and-play. The law should be changed to allow normally qualified electricians to do microinverter installs and allow people to at least get a small payment from the grid for exporting.

Thanks guys. Yeah, had a reply from an MCS installer today. They say that as it's just a battery install that there is still 20% VAT. Misleading headline from Sunak....Who'd have thought?! Interesting the two inverter situation with the DNO. I'll ask them.

I would like to retrofit the above. I have a diy plug in solar system using microinverters which has been accepted by the DNO. I receive no feed in tariff and end up exporting energy for free once the solar diverter has heated our hot water. Do I have to have an MCS installer to add battery...