The Green DC Agenda was created in 2009 by Green DC and the District Department of the Environment (DDOE). The plan is operational and being implemented by those two agencies. Its agenda consists of seven themes and two spotlights. The agenda supports a number of DDOE related plans and commitments, such as the Climate of Opportunity from 2010, which seeks to reduce DC government emissions by 20% below 2006 levels by 2012, 30% below 2006 levels by 2020, and 80% below 2006 levels by 2050.

In February 2012, WGL filed a rate case with the DC PSC in which it proposed to expand its existing pipe replacement program (originally approved in 2007). In the filing, WGL proposes a 5-year accelerated pipeline replacement program and a surcharge recovery of $119 million to be invested in replacement infrastructure. The DC PSC ruled, in part, on this case in May 2013. It denied WGL’s request to implement the initial 5 year phase of its Accelerated Pipeline Replacement Program. A decision on WGL’s request to recover the costs of its Accelerated Pipeline Replacement Program in a Plant Recovery Adjustment was deferred until a later date. The DC PSC conditionally approved WGL’s program on March 31, 2014. WGL has since received full approval to implement the first five years of a 40-year Accelerated Pipe Replacement Plan (APRP). The APRP is designed to reduce risk and enhance safety by replacing aging, corroded or leaking pipe in the natural gas distribution system WGL will spend $110M during this period. The APRP is divided into multiple “programs”, three of which were approved in this first phase: $40 million to replace an undetermined number of bare and/or unprotected service replacements; $32.5 million to replace 18 miles of bare and unprotected steel main and an undetermined number of services; $37.5 million to replace 20 miles of cast iron mains.

Washington Gas and WEC Energy Corp. subsidiary Trillium CNG have entered into a partnership to open a CNG station in the District of Columbia.