Natural gas supply and demand fundamentals and the demand for clean energy have consistently underpinned our strategy, as well as the infrastructure we develop. The abundant supply of natural gas in North America, driven by new technology that has improved the economics of unconventional gas plays, has been positive news for North American energy consumers and has led to renewed interest in natural gas as an economically priced, clean‑burning fuel. As a result, the use of natural gas for power generation, household, and commercial and industrial uses has increased substantially, providing significant opportunities across our Midstream, Utilities and Power segments.
Our Midstream segment includes natural gas gathering and processing, natural gas liquids (NGL) extraction and separation, transmission, storage and natural gas marketing. Our Midstream segment also includes an equity investment in Petrogas via our AltaGas Idemitsu Joint Venture Limited Partnership, through which we hold an interest in the Ferndale LPG Terminal in the state of Washington. The Midstream segment also includes expansion and greenfield projects under development or construction, including the Ridley Island Propane Export Terminal near Prince Rupert, British Columbia.
We serve customers primarily in the Western Canadian Sedimentary Basin and transact more than 1.5 Bcf/d of natural gas. Our gas gathering systems move natural gas from producing wells to processing facilities where impurities and certain hydrocarbon components are removed. The gas is then compressed to meet downstream pipelines’ operating specifications in order to be transported. Meanwhile, our extraction and separation facilities reprocess natural gas to extract and recover ethane and natural gas liquids. We own approximately 1.5 Bcf/d of extraction processing capacity and approximately 0.7 Bcf/d of raw field gas processing capacity.
In the northeastern U.S., our Midstream segment also includes investments in four natural gas pipelines: Central Penn, Mountain Valley, Stonewall and the proposed Constitution Pipeline.
We own and operate utilities that store and deliver safe and reliable natural gas to homes and businesses in the District of Columbia, Virginia, Maryland, Michigan and Alaska. Our Utilities segment serves approximately 1.6 million customers with a rate base of approximately $3.7 billion. The utilities are underpinned by regulated returns and regulatory regimes that generally provide stable earnings and cash flows. Our Utilities business also includes storage facilities and contracts for interstate natural gas transportation and storage services.
The utilities within this segment of our business are:
- Washington Gas in Virginia, Maryland and the District of Columbia
- SEMCO Energy Gas Company in Michigan
- ENSTAR Natural Gas Company in Alaska
- An approximate 37 percent interest in AltaGas Canada Inc.
We are engaged in the generation and sale of capacity, electricity, and ancillary services and related products through power facilities in Alberta, California, Colorado, Michigan, and North Carolina. Our Power segment includes 695 MW of operational gross power generation capacity from gas-fired, solar, biomass, and energy storage, as well as a number of opportunities for additional energy storage assets currently under development.