Washington Gas Light

Washington Gas Light is an affiliate of Canadian-based AltaGas. The utility provides service to about 513,000 customers in Montgomery County and Prince George’s County, as well as Calvert, Charles, and St. Mary’s counties. In addition to Maryland, Washington Gas is a multi-jurisdictional utility that is regulated in two other regions, the District of Columbia and Virginia.

WGL’s last rate case was in 2023. The final PSC ruling was issued on December 14, 2023. You can access the case here. 

Current rates

Gas bills include two primary categories of charges: distribution charges and supply charges. These categories of charges and additional charges are explained here. The distribution rate covers most of the average customer's distribution costs. For the average Washington Gas customer in 2024, the volumetric rate makes up 75 percent of distribution costs.  

Volumetric distribution rate: $0.4621/therm

Customer charge: $11.85/month

Gas supply cost: $0.5101/therm (October 2024)

EmPOWER surcharge: $0.0431/therm

(The above graph is as of October 2024.)

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Watch a previously recorded webinar on how to read your Washington Gas bill.