Hilcorp Alaska is an oil and gas producer with operations in Cook Inlet and on the North Slope, including Prudhoe Bay and Milne Point. It is known for Cook Inlet gas storage and supply issues, North Slope gravel mining and well development, and debates over Alaska's proposed gas pipeline.
hilcorp.com ↗JL Tower, 3800 Centerpoint Dr #1400, Anchorage, AK 99503, USA
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Photo: Alaska Region U.S. Fish & Wildlife Service via Wikimedia Commons · Photo source · Public domain
Hilcorp seeks renewal of its oil spill plan for 12 Cook Inlet platforms
Hilcorp Alaska has asked the state to renew its oil spill plan for 12 Cook Inlet platforms and two Kenai Peninsula oil fields, the Alaska Department of Environmental Conservation said in a notice Monday. The public can comment through Dec. 1.
The plan lays out how Hilcorp would prevent and respond to a spill from its wells, drilling, processing, crude and fuel storage, and pipelines. State law requires it to commit enough resources to handle what regulators call "a realistic maximum discharge." One of the what-if scenarios in the current plan is a 75,000-barrel winter blowout at the King Salmon platform. That plan expires June 6, 2027.
The platforms are Anna, Baker, Bruce, Dolly Varden, Granite Point, Grayling, King Salmon, Monopod, Platform A, Platform C, Spurr and Steelhead. Each either produces oil or has former production wells that haven't been plugged and abandoned to state standards, the department said. The plan also covers the Granite Point Tank Farm and Trading Bay Production Facility on the west side of the inlet, and the Beaver Creek and Swanson River fields inside the Kenai National Wildlife Refuge.
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Stories on what’s next
Hilcorp Spurr Platform Finalized Construction Plan Deadline
Hilcorp wants to plug five Cook Inlet wells for good
Hilcorp asked the state to dissolve a Cook Inlet unit and permanently plug five of nine wells at an offshore platform, as the basin runs short of gas.

Public Comment Deadline: Hilcorp Gas Storage Discovery Period Closes
Regulators won't decide Hilcorp's gas storage rates for Southcentral until late 2027
Hilcorp's own study found its gas storage rates bringing in 25% more than costs plus allowed profit. Regulators cut them for now and will decide by late 2027.

Latest
October 2026
State ends Hilcorp's idle Cook Inlet unit but gives it three years to decide on a restart
The state agreed Wednesday to end the unit around two long-idle Cook Inlet platforms, but gave Hilcorp three more years to decide whether to fire one back up.

Hilcorp seeks to fill Beluga wetlands for gas storage pad under emergency review
Hilcorp seeks emergency permit to fill 2.35 acres of Beluga wetlands for a natural gas storage pad, with public comment open through early November.

Regulators cut Hilcorp's Kenai gas storage rates up to 31% while they investigate
Regulators cut Hilcorp's Kenai gas storage fees up to 31% after its own study showed it was overcollecting. Whether your utility bill notices is another matter.

September 2026
Regulators cut Chugach's Beluga River gas price after Chugach asked for an increase
Chugach asked regulators to nudge its Beluga River gas price up a penny. After staff found errors, regulators cut it by 39 cents instead, starting Thursday.

Comments due Oct. 23 on Alaska's 2027 Cook Inlet and Alaska Peninsula oil and gas lease sales
Want the right to challenge the state's next Cook Inlet and Alaska Peninsula oil and gas lease sales? Comment by Oct. 23, or forever hold your appeal.

Cook Inlet gas storage at 69.5% as winter nears, with one field shut in for maintenance
Southcentral's gas storage fields are still filling and sending nothing out, at 69.5 percent full with winter coming and Enstar 3 Bcf short.
Southcentral is 3 Bcf short this winter, and producers told lawmakers the gas runs out in 2029
Southcentral Alaska faces a natural gas shortage by winter 2029 unless it imports liquefied natural gas or taps North Slope supplies, Hilcorp and Chugach told lawmakers Thursday.

Hilcorp wants a North Slope gravel mine with no wetland payback
Hilcorp wants to mine gravel across about 95 acres of North Slope tundra near Deadhorse with no wetland compensation, arguing Arctic wetlands can't be replaced.

Hilcorp says the North Slope is running short of gravel and wants a new mine
Hilcorp is seeking state approval for a 64-acre gravel mine seven miles northwest of Deadhorse, with public comment due Sept. 28, as the company's existing North Slope gravel sources run low.

August 2026
Hilcorp wants to fill 95 acres of Arctic wetlands for a gravel mine — comment by Sept. 4
Hilcorp wants to fill about 95 acres of Arctic tundra wetlands near Prudhoe Bay for a gravel mine, with no offset for the loss. Comment is open until Sept. 4.

Hilcorp wants to dig a 95-acre gravel pit near the Putuligayuk River
Hilcorp wants to dig a 95-acre gravel pit near the Putuligayuk River on the North Slope. Two-thirds of it would be permanent. Comment closes Sept. 4.

Three Cook Inlet gas storage plans pending for winter demand
Cook Inlet's gas problem isn't only supply, it's winter. Alaska is weighing three plans to bank gas underground and draw it down in the cold months.

Alaska takes a first step toward new air permits for Hilcorp's Nikaitchuq oil field
Alaska took a first step toward new air permits for Hilcorp's Nikaitchuq oil field, as North Slope officials push for air monitoring in nearby villages.

Hilcorp says opposing the tax isn't opposing the gas line
Hilcorp told the gas-line caucus that opposing a targeted tax on the company isn't opposing the pipeline, even as that tax deadlocks the bill in Juneau.

A Hilcorp gravel-mine permit reflects the North Slope's expanding oil footprint
Hilcorp wants a new North Slope gravel mine — one small permit amid a gravel-demand surge as Arctic oil development expands and converts wetlands, one project at a time.

ENSTAR says Cook Inlet output has fallen to a fifth of its 1990s peak, with its firm contract ending in 2033
Cook Inlet is apparently in trouble, well, unless you think rolling backouts are a good deal. And I'm sure somebody in the world does, somewhere

About Hilcorp Alaska
hilcorp.com ↗JL Tower, 3800 Centerpoint Dr #1400, Anchorage, AK 99503, USA
Hilcorp Alaska is an oil and gas producer with its Alaska office in Anchorage and operations in Cook Inlet and on the North Slope, including Prudhoe Bay, Milne Point and Nikaitchuq. It is a major supplier of natural gas to Southcentral Alaska.
In Cook Inlet, Hilcorp operates platforms and gas fields and stores gas underground at sites such as Kenai and Beluga River to meet winter demand. Its storage rates are set by state regulators and flow through to the bills of utilities such as ENSTAR and Matanuska Electric Association, and declining Cook Inlet gas supply is a recurring question. On the North Slope, its permits for gravel mines, wetland fill, seawater discharge, air quality and added power generation recur.
Hilcorp's operations connect it to state agencies that issue leases, easements and spill plans, and to communities such as Nuiqsut and Kenai near its fields. Its tax treatment is part of the debate over the proposed Alaska LNG pipeline.
More from Hilcorp Alaska
July 2026
Hilcorp seeks 50 megawatts of new power at Milne Point
Hilcorp wants about 50 megawatts of new turbine power at Milne Point — three big turbines and 185,000 gallons of fuel. Comments close 30 days from July 18.

DEC issues proposed final APDES permit for Hilcorp's Prudhoe Bay discharge
DEC issued a proposed permit allowing Hilcorp to discharge 12.4 million gallons of treated seawater daily into Stefansson Sound near Nuiqsut, reviving an authorization that expired in late 2022.

Freezing rain possible at Kaktovik and Point Thomson through Wednesday night
Freezing rain and lower-30s temperatures threaten Kaktovik and Point Thomson through Wednesday night, a mid-July hazard the National Weather Service warned Tuesday.

The $100 million question inside Alaska's gas-line bill
Should Hilcorp pay the oil tax ExxonMobil and ConocoPhillips already do? It's worth $100M-plus a year — but critics warn taxing Cook Inlet's gas supplier could backfire.

Mat-Su power bills climb as Alaska's energy squeeze bites
Mat-Su electric bills are rising about $14.53 a month — driven by a cold spring, low hydro, and new Hilcorp gas-storage fees, a snapshot of Southcentral's tight energy supply.

June 2026
Hilcorp wants five years to drive across North Slope subsistence land
A company wants 5 years to drive industrial rigs across North Slope tundra people hunt on. The real fight is who sets the rules, and when.

Point Thomson is the remote gas field Alaska's pipeline dream depends on
You know Prudhoe Bay. You probably don't know Point Thomson — the remote, pricey field Alaska's whole pipeline dream quietly leans on. And it's stirring.

Cook Inlet gas production falls to 61 Bcf in 2025
Cook Inlet gas production fell to 61 billion cubic feet in 2025, matching annual regional demand with no winter cushion. • Daily output of 200 million cubic feet falls short of peak winter demand of 320 million cubic feet per day. • Hilcorp has drilled 192 wells since 2012 and spent $1.5 billion just to hold production steady as individual wells decline 30 to 40 percent annually. • Utilities are developing LNG import terminals to fill the gap, targeting first imports in 2027 to 2029.

MEA seeks RCA approval to pass gas storage costs to ratepayers
MEA seeks approval to add natural gas storage costs to monthly electric bills through an automatic adjustment rider, passing Hilcorp storage fees directly to ratepayers as the utility secures more gas for Southcentral Alaska.

Hilcorp seeks state lease for 1,330-acre gas storage field in Kenai
Hilcorp filed Friday for a state lease to store natural gas in 1,330 acres of subsurface rock beneath Kenai, with public comments due July 7.

Two firms seek competing gas-storage leases at Kenai Loop field
Hilcorp and ENSTAR filed competing applications to convert the depleted Kenai Loop gas field into storage, forcing the state to choose between them as Cook Inlet's gas production falls 60 percent short of winter demand for Southcentral Alaska.

All three major North Slope producers have signed Alaska LNG Phase 1 sale agreements — and they want their ownership to stop at the lease line
All three major North Slope producers have signed Alaska LNG Phase 1 sale agreements — and they want their ownership to stop at the lease line

Hilcorp seeks Cook Inlet gas storage lease at Beluga River — part of how Southcentral plans to get through winter as gas production declines
Hilcorp seeks gas storage lease at Beluga River in Cook Inlet to manage Southcentral's winter demand surge. • The site overlaps critical habitat for the endangered Cook Inlet beluga whale, population around 300. • Alaska Department of Natural Resources is taking public comment on the application.

Hilcorp, ENSTAR seek leases for three Cook Inlet gas storage sites
Hilcorp and ENSTAR filed three applications to convert depleted Cook Inlet gas fields into storage facilities, a move the state says is critical as the inlet's aging reserves decline and supply reliability becomes a concern for Southcentral Alaska.
DNR approves North Slope easement for Hilcorp drilling expansion
Alaska DNR approved a 71.91-acre easement amendment Monday allowing Hilcorp to drill new wells from its North Slope onshore pad through existing leases to reach offshore oil reserves in the Beaufort Sea, with drilling to begin this month.
Southcentral utilities warn of steep rate hikes as Cook Inlet gas dwindles
MEA and ENSTAR told lawmakers Southcentral electricity and heating bills will jump $21 to $31 monthly starting in 2029 when Cook Inlet gas contracts expire and utilities switch to costlier imported liquefied natural gas.

Cook Inlet gas production drops 60% since 2010
Cook Inlet natural gas production has dropped 60% since 2010 to 200 million cubic feet per day, leaving winter demand unmet and forcing utilities to plan for costly LNG imports starting in 2033.

May 2026
Kenai approves $30K more for gas storage lease consulting
Kenai City Council approved an extra $30,000 for consultants to evaluate two competing natural gas storage proposals at the municipal airport, bringing the total contract to $60,000.

April 2026
Senate Panel Questions DNR Commissioner Nominee on Gas Development
Senate committee pressed DNR nominee John Crowther on Cook Inlet gas supply and oil royalty disputes as he seeks confirmation to lead Alaska's resource department.