G98 & G99 application

Fraz123 · Oct 21, 2021

Hey I've been out of the industry for a couple of years and I'm helping plan a PV system and I'm going to have to use the new G98 & G99 applications were looking at an 18 panel system using 340w panels going us 5.44kw and adding a 5.8kw battery so this would fall under G99 correct?

Tia

binky · Oct 21, 2021

depends if you inverter is 16A limited ie 3.6kW or not. It's not so much the array size as the inverter. If fitting a 5 kW inverter with a 16A limitation function, for which they will want a G99, your DNO will want a manufacturers' cert for that, and sometimes like to see a photo of the inverter set for 16A export max.

Fraz123 · Oct 21, 2021

Cheers @binky so how does battery storage fit in to the equation as 90% of these added to the PV are going to exceed the 16a or 3.68kw cap for G98 and the G99 just seems a little excessive for most installs

binky · Oct 21, 2021

Fraz123 said:
Cheers @binky so how does battery storage fit in to the equation as 90% of these added to the PV are going to exceed the 16a or 3.68kw cap for G98 and the G99 just seems a little excessive for most installs

that's where life can get interesting. If it's a standlone battery they count it as 2 systems connected to the supply, which can cause big issues getting it approved. If you have a hybrid inverter, or retro DC connected batteries, it counts as a single system

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G98 & G99 application

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G98 & G99 application

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