The project will turn cow manure and food waste into renewable natural gas for use by Middlebury College.
Supporters say the concept has the potential to accelerate emission reductions in transportation and agriculture.
The bill would require large natural gas utilities to source some of their supply from dairies, landfills and other sources.
A new study notes that grazing animals and many vegetable crops can benefit from the partial shade underneath solar arrays.
Unusually wet weather hurt planting this year and made wind turbine lease payments extra welcome to farmers.