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Solar Schematic – Switching FiT Providers

 
Solar Photovoltaic (PV)
Last Post by bontwoody 4 months ago
5 Posts
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 5 years ago
Posts: 1059
Topic starter 06/06/2026 3:32 pm   [#3044]

Could someone please cast your eyes over this schematic. Im trying to switch FIT providers and Octopus are asking for one. The original 3.68kW FIT array has been supplemented by a new 16.83kW solar array and a DC coupled battery. Obviously the FIT generation meter only measures the output from the FIT array. Have I made any stupid mistakes please 🙂

solar-diagram-1.pdf

 


This topic was modified 4 months ago by Mars

House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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 EtchedPixels
(@etchedpixels)
Estimable Member Member
Joined: 4 months ago
Posts: 152
06/06/2026 5:03 pm  

We had a nightmare trying to switch out FIT to Octopus and gave up.

I don't see anything obviously wrong. You got a good G99 though!



   
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bontwoody
 bontwoody
(@bontwoody)
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Joined: 5 years ago
Posts: 1059
Topic starter 06/06/2026 5:08 pm  

@etchedpixels Thanks, this is actually for a nursing home Im helping. I found Octopus fine when I did my house, and I now get paid in days compared to several weeks with OVO 🙂


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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Batpred
 Batpred
(@batpred)
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Joined: 2 years ago
Posts: 1155
06/06/2026 5:27 pm  

Posted by: @bontwoody
↑

@etchedpixels Thanks, this is actually for a nursing home Im helping. I found Octopus fine when I did my house, and I now get paid in days compared to several weeks with OVO 🙂

The diagram looks fine to me. When I had my export approved by Octopus (after the DNO approved it), I may have provided something showing the consumer units, isolators, etc. They also asked me for an electrical certificate and/or Building control, I cannot remember all the details.

But I posted a bit about it here, hope that helps. At the time this raised a few concerns in the forum, but, in the end, I just made sure the electrician applied a few more safety and warning stickers, etc. I never lost any sleep over it, we are all able adults in our household.. 

 


This post was modified 4 months ago by Batpred

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC


   
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 5 years ago
Posts: 1059
Topic starter 06/06/2026 5:34 pm  

@batpred Thanks. Im hoping the installer will provide one soon, but if not I might try my luck with this one and see what happens. 🙂


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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