Hi,

I think you might want to expand the power plant grounds to include the building on the right.

I think the left building has the actual generators and the right one does some kind of processing of the fuel. Or a least that's where all the big dump trucks are being unloaded every time I drive past.

Also I was looking at  wounder if there is some why of indicating a biomass storage site on OSM since these people store big piles of chipped wood for burning here: https://osm.org/go/ZfC9f_W0x-?m=

Let me know if you have any questions.

RedEyedVireo