History of Gas System Enhancement Plans
In 2014, the Massachusetts Legislature passed An Act Relative to Natural Gas Leaks (the “Gas Leaks Act”). The Gas Leaks Act permitted local distribution companies to submit to the DPU annual plans to repair or replace aged natural gas infrastructure in the interest of public safety and to reduce lost and unaccounted for gas ("LAUF").
On or before October 31st of each year, the gas distribution companies are permitted to submit annual Gas System Enhancement Programs (“GSEPs”) for replacement of aged (non-cathodically protected steel, cast-iron, and wrought-iron) infrastructure during the following calendar year.
On October 31, 2014, six gas distribution companies submitted their first GSEPs setting forth their plans for replacing aged pipe during the 2015 construction year. Pursuant to the Gas Leaks Act, each gas company also included a timeline to replace all aged infrastructure on an accelerated basis, specifying an annual replacement pace and a program end date. On April 30, 2015, the DPU approved each gas company’s GSEP. Orders can be found below.
2018 Gas System Enhancement Plans
On October 31, 2017, six gas distribution companies submitted their 2018 GSEPs to the DPU. On April 30, 2018, the DPU approved each gas company's GSEP for 2018. Orders can be found below.
Prior Gas System Enhancement Plans Orders
Can be found in the DPU's Docket FileRoom. For the 2017 GSEP orders, the docket number is 16-GSEP-XX (XX = 01 for Unitil; 02 for Berkshire Gas; 03 for National Grid; 04 for Liberty Utilities; 05 for Bay State Gas; and 06 for NSTAR Gas)
GHG Emissions related to Gas System Enhancement Plans
For MassDEP's regulations on the reduction of Methane Emissions from Natural Gas Distribution Mains and Services, please visit the Reducing GHG Emissions Under Section 3(d) of the Global Warming Solutions Act Guide page.
For GHG Emissions Reports related to the GSEP program, please visit MassDEP's Massachusetts Greenhouse Gas (GHG) Reporting Program Data page.