ENSTAR says Cook Inlet output has fallen to a fifth of its 1990s peak, with its firm contract ending in 2033

Cook Inlet Production Decline and the 2033 Contract Deadline

Cook Inlet now produces 60 to 70 billion cubic feet of natural gas a year, down from more than 300 billion at its early-1990s peak, and the firm contract that carries Southcentral homes and businesses expires in 2033. Hilcorp entered the basin in 2012, drilled 192 wells, spent well over $1.5 billion and kept the system whole. That was the core of what John Sims, president of ENSTAR Natural Gas Company, laid out at a Commonwealth North forum in Anchorage on Friday, June 5.

The scale problem is easiest to see on a cold morning. On a severe peak day, ENSTAR alone needs about 320 million cubic feet, more than the entire basin now produces on an average day. Stored gas, much of it held at the CINGSA facility, bridges that difference. Sims called storage one of the most valuable services Hilcorp provides, and a piece that every replacement option, whether import or pipeline, will have to expand.

Prices have already moved. A cold March left ENSTAR short, and Hilcorp filled the gap at $16 per thousand cubic feet, against a base contract price near $8.36.

A Staggered Countdown to 2033

Hilcorp told Railbelt utilities in 2022 that it would not renew Cook Inlet gas contracts beyond existing terms, and the expirations are staggered: Homer Electric in 2024, Chugach Electric and Matanuska Electric in 2028, ENSTAR in 2033. Matanuska Electric's board has since extended firm supply through March 2029. An earlier Alaska News article on basin production noted output fell to roughly 61 Bcf in 2025, down from 79 Bcf in 2016, while annual demand holds near 65 to 70 Bcf. At a Senate Finance Committee briefing on June 16, the Division of Oil and Gas said the larger Hilcorp firm contract with ENSTAR covers 28 Bcf a year and runs through March 2033.

The 2033 date marks the expiration of ENSTAR's firm Hilcorp contract, which is a separate question from forecasts of when basin supply may fall short of demand. Telling the Alaska State House Finance Committee on June 1 about that agreement, Sims said, "This is the last contract like this you will ever see in the Cook Inlet. We cannot contract for firm supplies of this nature. We've tried for a number of years. No one is willing to provide it."

Not everyone accepts that the basin's limits are settled. In a June 2023 letter to the attorney general and the natural resources commissioner, members of the Alaska State Senate asked the state to investigate whether Hilcorp has met its Cook Inlet lease obligations, noting that state forecasts showed Cook Inlet gas could meet demand into 2027 or 2028, and arguing that an unwillingness to commit to future contracts may reflect noncompliance with lease terms requiring diligent development.