W. Va. Code § 5-21-2
The director shall develop statewide energy cost reduction guidelines to be applicable to new and significantly renovated buildings for which a building permit is issued. In developing the guidelines, the director shall establish as the minimum criterion the ASHRAE 90-75 standard energy conservation in new building design.
Based on the state guidelines each local jurisdiction in the state having a building code shall require each permit application to be accompanied by sufficient information to determine that the energy conservation measures under the guidelines are met. A letter of certification from an architect or a registered professional engineer may provide adequate certification that the new construction or renovation is in compliance with the minimum criteria as established by the director.
The director shall provide training to local jurisdictions on the application of the state guidelines, which may include training programs developed by agencies of the federal government.
W. Va. Code § 5-21-2