Nat Grid Future of Heat Panel Testimony August 01 2020

On Friday, July 31, 2020, National Grid's upstate Niagara Mohawk Power Corporation filed a new rate case with the Public Service Commission. Part of the testimony is a 69-page Direct Testimony of the Future of Heat Panel document in which the company proposes to install shared ground loops for geothermal heating and cooling systems.

On page 37 the company is proposing a standard offer "Weighted Average Cost per Ton (WACOT)" of $22.69 per ton per month. A smaller or more efficient home requiring a 3-ton capacity loop would pay $68.07 per month which would cover the loop and the heat/cooling supplied by the loop.

In addition to this cost, the owner would pay for the cost of installation (minus incentives and tax credits) of the indoor heat pump infrastructure, as well as the cost of electricity to power the heat pump and circulate the water/antifreeze mixture through the loop. A larger 4-ton system would cost $90.76 per month, plus the installation of indoor infrastructure and the cost of electricity.