Combined heat and power (CHP) systems are set to be installed at six biorefineries in two US states, ethanol producer POET has announced.

The systems are aimed at reducing reliance on the grid, recovering waste energy for additional use in the ethanol production process and reducing emissions, POET said.

The CHP units, which are planned to be installed at plants in Ohio and Indiana, are expected to be operational next year.

‘This is very exciting for POET and renewable fuels,’ said CEO Jeff Broin. ‘We are already much better than gasoline in overall emissions. Finding ways to make additional use of steam is a great opportunity to improve our environmental footprint even more.’

The company said it already employs a number of energy efficiency measures in its biorefineries, including heat-sharing between processes such as distillation and evaporation to promote maximum production with minimum energy use.