Biomass plants are eligible for the Standard Offer program if they produce biomass power using a fuel other than methane derived from an agricultural operation or landfill, according to 30 V.S.A. § 8005a(c)2. Furthermore, 30 V.S.A. § 8005a(n) specifies that wood biomass resources may receive a standard offer contract only if they have a design system efficiency (the sum of full load design thermal output and electric output divided by the heat input) of at least 50 percent.