Almost
The calculation on the wiki for gas seems to be incorrect. For the correct values, refer to the tooltip of the turbine you built. For large tungstensteel, it gives 1600 EU/t for a gas turbine. This is what you start with.
Optimal flow is then 1600/32 (burn value for biogas/t) = 50 mb/t (round this down if it's a fraction)
You will not get 1600 EU/t however, there's still the efficiency multiplier. For your turbine, this is 140%, so we add this in:
1600*(140/100)=2240 EU/t output. Lastly there's a few EU/t loss because it's an energy generator. This depends on the tier of your dynamo hatch, but it's not that great of a loss.
So in short, you're generating about 2240 EU/t for 50mb/t biogas.
In case you want to be lazy on calculations, you could build the information panel from Nuclear control and link it to the turbine block with a gregtech sensor kit. In the screenshot you can find an example with a HSS-S gas turbine.