Went on a guided tour once, the actual generators are surprisingly small. The output is (or was) all sold to an aluminium casting works in the town and IIRC it was more economical (i.e. they got a better price for it) by laying 1 km of cable there rather than sending it via the local distribution network.
16 x 230W Upsolar panels S Devon, 4kW Steca, 3.9 MWh FITs/yr
8 x 405W Longi panels, 250/60 MPPT, 3.3 MWh/yr
Victron MultiPlus II-GX 48/5000/70-50
10.65 kWh Pylontec Force-L2
zappi 7kW EVCS
Villavent whole-house MVHR
5000l rainwater system
Vaillant 12kW HP