We use wood here as a fuel. Change this sentence to passive voice?

Active: somebody does something
Passive: something is done - (by whom may or may not be emphasized)

"Avoid using the passive voice." - active - subject: you (imperative) - verb: avoid
"Use of the passive voice is to be avoided." - passive - subject: use or using (gerund) - verb: some form of to be

Active: We use wood here as a fuel. - subject: we - verb: use
Passive: Wood is used as a fuel here. - subject: wood - verb: is used