Wis. Stat. § 26.36: Forest energy resources.

Biennially, in consultation with the department of agriculture, trade and consumer protection and any other appropriate agency, the department shall prepare a report regarding the extent of forest lands in this state and the potential of such lands to provide fuel for use in electric generating facilities, industrial facilities and home heating systems. The report shall evaluate progress made in meeting the afforestation goal under s. 1.12 (3) (c). The department shall submit the report before April 1 of each even-numbered year to the legislature under s. 13.172 (3).