United Utilities and National Grid

MANCHESTER, England - First Use of Biogas to Supply UK Gas Grid - With Photo The people of Manchester will soon be contributing to a green energy revolution - just by flushing the loo! In a UK first, United Utilities has teamed up with National Grid to convert a by-product of the wastewater treatment process into gas for injection into the local gas pipeline network and fuel for a fleet of sludge tankers.