As used in ORS 311.850 to 311.870, unless the context requires otherwise, “facility” means:
(1) A thermal power plant, as defined in ORS 469.300.
(2) A hydroelectric power project, as described in ORS 543.010.
(3) Any building or improvement that is suitable for use for industrial, commercial, manufacturing or warehousing purposes. [1975 c.563 §2]