By Laura Legere / Pittsburgh Post-Gazette.

Advocates of turning cow manure and other waste into energy are backing a bill introduced in the Pennsylvania House that would forbid putting caps on how much electricity those systems can sell to the grid.

The bill is aimed at a proposal still being developed by the Pennsylvania Public Utility Commission meant to limit reimbursements to customers who generate power from alternative sources — a dairy farmer with a methane digester, for example, or a homeowner with solar panels on the roof.

Such customers would only be eligible for reimbursements if they have systems designed to produce no more than 200 percent of the electricity they normally use at their farm or home in a year.