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Chapter 21

Energy Transition

From coal peak to post-carbon crossroads: mine closures, shifting retirement timelines for Hunter and Huntington power plants, the billion-dollar Green River Energy Center, workforce transitions, property tax pressures, and Emery County's uncertain but emerging new economic identity.

15 min read

Ch21 — Energy Transition

For most of the twentieth century, Emery County’s identity was inseparable from coal. The black seams threading through the Wasatch Plateau fed a regional economy of staggering density: mines, railroads, power plants, truck fleets, and the families who depended on all of them. At the industry’s peak in the early 2000s, coal sustained more than two thousand direct jobs in the county and bankrolled roughly sixty percent of local property tax revenue — the money that paid teachers, stocked firehouses, and patched county roads. Then, with a speed that left communities little time to adjust, the market shifted. By the 2020s, Emery County found itself at the center of one of the most consequential economic transitions in rural Utah’s history: the move from fossil fuel production toward renewable energy, outdoor recreation, and an uncertain but emerging new economic identity.

21.1 The Coal Economy at Its Peak

The numbers from the early 2000s tell the story plainly. Utah’s coal mines, concentrated in Carbon and Emery counties, produced an average of 24.5 million short tons per year across that decade — enough to supply a significant share of the intermountain West’s electrical generation and to sustain thousands of workers in some of the highest-paying blue-collar jobs in rural Utah (Kem C. Gardner Policy Institute, 2022). Emery County’s share of that output was substantial. Wolverine Fuels alone operated three mines in the county and, as of 2018, paid its workers a combined $85.3 million in annual wages; a single mine straddling the Carbon-Emery county line employed nearly 1,500 direct and indirect workers (High Country News / MIT Climate Portal, 2020).

The power generation sector amplified the economic footprint further. Two massive coal-fired plants — Hunter, near Castle Dale, and Huntington, in the town of the same name — converted Emery County coal into electricity for hundreds of thousands of Utah homes and businesses. Together, the plants and their supply chains employed hundreds of direct workers and supported thousands more in mining, rail, and equipment services. The Hunter and Huntington plants, along with other utility infrastructure, collectively accounted for roughly sixty percent of Emery County’s property tax base — a dependency that would prove both a blessing during the boom years and a structural vulnerability in the decades that followed (High Country News / MIT Climate Portal, 2020).

21.2 The Long Decline: Market Forces and Mine Closures

The contraction began not with a single dramatic event but with a slow, relentless squeeze. Natural gas prices fell sharply after 2008 as hydraulic fracturing flooded domestic markets; utilities found it cheaper to generate electricity from gas than coal. Federal environmental regulations under the Clean Air Act tightened emissions standards. Demand from western utilities — Emery County’s primary customers — began to erode.

The numbers charted the decline clearly. Utah’s coal production fell roughly sixty percent between 2010 and 2020, from approximately thirteen million short tons to 5.2 million (High Country News, citing EIA data). By 2020, Carbon County — historically the mining heart of the region — had no active coal mines. Only four operations survived in Emery County, including the newly opened Fossil Rock mine (High Country News / MIT Climate Portal, 2020). Employment in carbon-dependent counties fell twenty-one percent between 2008 and 2018, even as statewide employment rose by the same margin (High Country News / MIT Climate Portal, 2020). Emery County’s population told the same story: from 11,004 residents in 2010 to approximately 10,144 by 2023 — a decline of 7.55 percent in thirteen years driven by outmigration and a birth-death balance that no longer replaced those who left (U.S. Census Bureau, 2024; Kem C. Gardner Policy Institute, 2025).

A further blow arrived in 2022 in an Emery County mine shaft. On September 20 of that year, an underground fire broke out at Lila Canyon — a large underground operation owned by Emery County Coal Resources, a subsidiary of the reorganized Murray Energy bankruptcy estate. The fire proved uncontrollable. In December 2023, the company requested that the mine be placed in temporary cessation status; on January 15, 2024, the mine was sealed. Nineteen days later, on January 19, Emery County Coal Resources filed notice with the Utah Department of Workforce Services of the layoff of 150 workers — nearly the entire workforce of 152 people the mine had employed just months before (Utah DEQ; Salt Lake Tribune, December 2023). In a county where every coal job supported multiple households, the closure reverberated through Castle Dale, Huntington, and Ferron alike.

21.3 The Twin Pillars: Hunter and Huntington Power Plants

If the mines were the engines of Emery County’s coal economy, the power plants were the anchors. Hunter Power Plant, located near Castle Dale and first brought online in 1978, grew to a generating capacity of approximately 1,577 megawatts across three units — making it one of the largest coal-fired facilities in the intermountain West. Ownership was shared among PacifiCorp (operating as Rocky Mountain Power), Utah Associated Municipal Power Systems, and Deseret Power Electric Cooperative (Global Energy Monitor, Hunter Power Plant). Huntington Power Plant, commissioned in 1974 in the city of Huntington, held a capacity of roughly 1,037 megawatts across two units and directly employed 187 people (Global Energy Monitor, Huntington Power Plant). Together the two facilities provided approximately thirty percent to forty percent of Castle Dale community residents their livelihoods, and their combined economic ripple — through coal contracts, rail shipments, and equipment suppliers — stretched across the county (KUER, April 2023).

The plants were not merely employers. Their assessed value made them indispensable to the county’s fiscal structure. Without the power plant property tax revenue, the math for schools and emergency services simply did not work — a fact that shaped every subsequent political decision about when and whether to close them.

21.4 The Policy Whiplash: Shifting Retirement Timelines

No aspect of Emery County’s energy future has been more unstable than the retirement schedule for Hunter and Huntington. In March 2023, PacifiCorp released an integrated resource plan that set a clear — if distant — course: both plants would close by 2032, to be replaced by small modular nuclear reactors on the same sites. Governor Spencer Cox expressed cautious support; utility advocates and labor unions braced for the transition (Salt Lake Tribune, March 2023; BYU Daily Universe, April 2023).

The certainty lasted barely a year. In April 2024, after the Tenth Circuit Court of Appeals halted the EPA’s rejection of Utah’s ozone transport plan — effectively reducing the regulatory pressure that had driven the retirement schedule — PacifiCorp revised its timeline substantially. Huntington’s retirement moved to 2036; Hunter’s to 2042. The nuclear replacement plan was quietly cancelled (Deseret News, April 2024; Salt Lake Tribune, April 2024).

Then, in January 2025, PacifiCorp released a draft 2025 Integrated Resource Plan containing what advocates for coal-community transition described as a significant reversal: the document listed no retirement dates at all for either facility. Without an “enforceable environmental compliance requirement,” the utility stated, the plants could operate for the full two-decade study horizon of the plan (Utah News Dispatch, January 2025). For community planners trying to forecast revenue, employment, and infrastructure investment, the message was blunt: the coal economy might linger far longer than expected — or collapse at any time, depending on which regulatory wind was blowing.

This pattern of shifting schedules illuminated a central tension in Emery County’s transition: the county needed certainty to plan for a post-coal future, but neither the market nor federal policy was providing it.

21.5 The Property Tax Crisis in Slow Motion

Whether the plants close in 2032 or 2042 or later, the fiscal mathematics remain stark. Approximately sixty percent of Emery County’s property tax revenue derives from coal-related utility and industrial infrastructure (High Country News / MIT Climate Portal, 2020). When those assets are retired and decommissioned — or when their assessed value declines as they age — the county faces a funding gap that no realistic scenario for replacement revenue fully closes in the near term.

School district budgets, fire department staffing, road maintenance schedules, and library hours all depend on a tax base that has already begun to erode at the mine level and will eventually contract at the plant level. Unlike boom-and-bust oil counties that experience sudden shocks, Emery County faces what economists sometimes call a “slow-motion fiscal crisis”: the erosion is visible and predictable, but the timeline is uncertain enough that no single budget cycle forces a decision.

Renewable energy development offers partial mitigation. The Green River Energy Center — described in section 21.8 — is projected to generate an estimated $55 million in property taxes over its project lifespan, providing a meaningful new revenue stream (Utah Business, May 2025). Castle Solar, which began operations in April 2024, similarly contributes to the county tax base. But neither project, nor both combined, fully replaces the fiscal contribution of two large coal-fired power plants.

21.6 Federal Programs and the Utah Rural Energy Diversification & Innovation Cluster

Recognition of Emery County’s structural vulnerability has drawn federal attention, though translating attention into economic transformation has proven slow. The U.S. Economic Development Administration has made Assistance to Coal Communities (ACC) funding available to regions impacted by coal decline; Emery County is eligible and has participated in regional coalitions pursuing those dollars (EDA.gov).

The most significant federal-state coordination vehicle has been the Utah Rural Energy Diversification & Innovation Cluster (U-REDI), a coalition led by the Utah Office of Energy Development and co-anchored by the Emery County Commission and the Southeastern Utah Economic Development District. U-REDI’s goal is to diversify the region away from deep coal dependency toward a portfolio of low-carbon power generation, advanced energy manufacturing, and technology research. The cluster has attracted EDA Build Back Better Regional Challenge funding and served as a platform for workforce training partnerships, including a renewable energy curriculum component added to Snow College’s Industrial Technology program and robotics and agricultural science programs for the Emery County School District (EDA.gov; Utah Office of Energy Development). Whether U-REDI can move fast enough — and at large enough scale — to buffer the workforce through the transition remains an open question.

21.7 First Renewables: Castle Solar and Early Projects

The arrival of utility-scale solar in Emery County offered an early signal that the landscape was capable of supporting a new energy economy. Castle Solar, a 40-megawatt alternating current solar facility, commenced operations on April 2, 2024 — making it one of the first large solar installations in the county. Hundreds of construction workers were employed during the project’s build-out; ongoing operations generate property tax revenue and provide a modest but concrete demonstration that Emery County’s 300-plus days of annual sunshine constitute an economic resource in their own right (University of Utah / @theU, 2024).

Castle Solar was not a company town replacement. Its permanent workforce is small, and its tax contribution, while real, is a fraction of what the coal plants provide. What the project demonstrated was proof of concept: the county’s terrain, grid access, and solar resources were attractive to large-scale renewable developers.

21.8 The Green River Energy Center: A Billion-Dollar Bet

The most consequential renewable energy development in Emery County’s history to date arrived in September 2024. On September 19, with Utah Governor Spencer Cox in attendance, rPlus Energies broke ground on the Green River Energy Center — a 400-megawatt solar photovoltaic facility paired with a 400-megawatt / 1,600-megawatt-hour battery storage system located near Ferron, on flat, sun-drenched terrain west of the town. The Emery High School marching band played; a rodeo queen arrived on horseback; an archery club set up demonstrations. The community’s reception of the project was, by most accounts, warm, if measured (BusinessWire, September 2024; Utah Public Radio, September 2024).

The numbers behind the ceremony were significant. The Green River Energy Center carried over $1.1 billion in construction debt financing, making it one of the largest rural energy investments in Utah’s history. When fully operational — a target of late spring 2026 — the facility will be capable of powering approximately 88,000 homes (Utah News Dispatch, September 2024). During the construction phase, rPlus Energies committed to creating up to 500 jobs and pledged to hire local residents for road construction, battery installation, and substation work. The permanent operational workforce will number only 15 to 20 full-time employees — far fewer than the hundreds employed at a coal plant — but the facility’s projected $55 million in property tax revenue over its lifespan offers a meaningful contribution to the county’s fiscal base (Utah Business, May 2025).

The Green River Energy Center is also significant as a symbol of the energy transition’s scale. Its battery storage capacity — 1,600 megawatt-hours — means the solar generation can be dispatched into the evening hours, addressing the intermittency challenge that has historically made utilities skeptical of solar as a coal replacement. In that sense, it represents not just a new source of power but a demonstration of the technology that will define the next generation of energy infrastructure throughout the rural West.

21.9 Workforce Transition: Retraining and the Labor Gap

The central human challenge of Emery County’s energy transition is not finding projects but replacing wages. A coal miner or power plant operator in Emery County earned wages that few alternative employers in the region match. A solar construction job pays well during the project phase but ends when the panels are installed. The fifteen to twenty permanent positions at the Green River Energy Center require technical training that most current coal workers do not already possess.

The workforce retraining infrastructure serving Emery County includes Snow College (based in Ephraim, with Emery County connections), the Utah College of Applied Technology, and the Emery County School District. U-REDI has channeled some resources toward expanding renewable energy coursework and technical training in these institutions. AES, an energy company with Utah interests, provided direct funding for Snow College’s Industrial Technology program expansion and for robotics and agricultural science initiatives in Emery County schools — modest investments aimed at building a next-generation technical workforce rather than retraining current coal employees (Utah Office of Energy Development).

What remains scarce is a clear, empirically documented pathway for the mid-career coal worker — typically male, 35 to 55 years old, with deep mine or plant experience and a family anchored by a mortgage in Castle Dale or Huntington — to transition into comparable-wage work without leaving the county. That gap is not unique to Emery County; it is a structural feature of energy transition in rural coal regions nationwide, and it remains, as of 2026, only partially addressed by existing programs.

21.10 Demographic Consequences: Population Loss and Outmigration

The workforce challenge is inseparable from a demographic one. Emery County’s population declined from 11,004 in 2010 to approximately 10,144 by 2023 — a loss of roughly 860 residents, or 7.55 percent (U.S. Census Bureau, 2024). By 2025, the population had stabilized at approximately 10,173, with a growth rate of 0.12 percent — essentially flat (Kem C. Gardner Policy Institute, February 2025). Eight Utah counties, including Emery, reported population decreases in recent estimates, with outmigration combining with a birth-death balance that no longer generates natural increase (KUER, February 2025).

The 2023 employment picture shows how thoroughly the county’s economic base has restructured, at least on paper: the largest employment sectors by headcount were Educational Services (532 workers), Construction (453), and Retail Trade (438) (DataUSA, 2023). Coal mining, which would have topped that list twenty years earlier, no longer did so — though many of the construction workers may be working on energy projects, and the sector’s position may reflect temporary boom from renewable build-out.

The Kem C. Gardner Policy Institute’s 40-year projections, published in May 2022, offer the most systematic long-term view. Carbon and Emery counties are among the least economically diverse in Utah, the institute found. Population decline is projected to continue through the 2030s, driven by outmigration and low natural increase. Starting around 2040, if diversification strategies bear fruit, positive net migration could return. The growth sectors identified for the region — tourism and hospitality, arts and recreation, remote workers, and energy research and manufacturing — collectively represent a plausible but not guaranteed pathway to stabilization (Kem C. Gardner Policy Institute, 2022).

21.11 Tourism and Outdoor Recreation as a Parallel Economy

While the energy debate has dominated political discourse, a quieter economic transformation has been accumulating in Emery County’s slot canyons, river corridors, and paleontological sites. The county encompasses some of the most dramatic terrain in the Colorado Plateau: the San Rafael Swell, a massive geological upwarp of tilted sandstone and shale exposing hundreds of millions of years of Earth’s history; the Green River, with its Class I–III whitewater and historic connection to John Wesley Powell’s exploration expeditions; and the Cleveland-Lloyd Dinosaur Quarry, which has yielded more than 12,000 bones from at least 74 individual Jurassic-age animals — the largest concentration of Jurassic carnivore bones ever found (visitemerycounty.com; emery.utah.gov).

Headwaters Economics, a nonprofit research organization, included Carbon and Emery counties in a 2023 study of outdoor recreation as a diversification strategy for resource-dependent communities — recognition that the region’s natural assets are economically significant and that deliberate investment in outdoor recreation infrastructure can accelerate a tourism-based recovery. Visitor-serving businesses — motels, outfitters, restaurants, shuttle services, campground hosts — generate payroll and sales tax that circulates locally, and they do so without the volatility of global commodity markets.

The limitations of tourism as a coal replacement are also real. Tourism wages generally run below coal wages; seasonal fluctuations create cash-flow challenges for small businesses; and the carrying capacity of fragile landscapes limits growth. But as a complement to renewable energy development and remote worker attraction, tourism represents one leg of a diversification strategy that, if sustained, could stabilize the county’s economy across the long transition ahead.

21.12 Looking Ahead

In 2026, Emery County stands at an inflection point unlike any it has faced since the first settlers followed Price River ditches into the valley. The coal economy that defined its identity for a century is in structural decline, even if the precise timing of its end remains uncertain. The renewable energy economy that is beginning to take its place brings capital and some jobs, but not yet at the scale or wage level that replaces what is being lost.

The county’s path forward is not predetermined. If the Green River Energy Center performs as projected, if additional solar and storage projects follow, if federal funding through U-REDI and related programs succeeds in building a technical workforce, and if the San Rafael Swell and its adjacent landscapes continue to draw visitors in growing numbers — then the long-range projections from the Kem C. Gardner Institute for population stabilization by the 2040s become plausible. If the coal plants close faster than new tax revenue materializes, if workforce retraining programs remain under-resourced, and if remote worker migration fails to compensate for outmigration of young adults — then the county faces a more difficult decade ahead.

What is clear is that the transition is already underway, that it is irreversible in direction even if not in pace, and that Emery County’s residents — the descendants of pioneer irrigators, coal camp families, and uranium-boom dreamers — face it with the same combination of pragmatic resilience and cultural attachment to place that has defined the community since its founding. The land has always been the constant. The economy built on it will change again, as it has before.

Sources

  1. High Country News / MIT Climate Portal — “What happens after Utah’s coal-fired power plants close?” https://climate.mit.edu/posts/what-happens-after-utahs-coal-fired-power-plants-close
  2. Utah News Dispatch (Jan 2025) — “PacifiCorp extends the life of Utah coal-powered plants — indefinitely.” https://utahnewsdispatch.com/2025/01/21/pacificorp-extends-the-life-of-utah-coal-powered-plants-indefinitely/
  3. Deseret News (Apr 2024) — “PacifiCorp’s updated energy plan delays retirement of coal plants.” https://www.deseret.com/utah/2024/04/03/pacificorp-coal-plants-utah-clean-energy/
  4. Salt Lake Tribune (Apr 2024) — Rocky Mountain Power coal extended deadline. https://www.sltrib.com/news/environment/2024/04/01/climate-setback-rocky-mountain-now/
  5. BYU Daily Universe (Apr 2023) — Rocky Mountain Power coal plant closure plans; nuclear replacement. https://universe.byu.edu/2023/04/19/rocky-mountain-power-announces-plans-to-close-its-last-coal-power-plants-in-utah/
  6. KUER (Apr 2023) — “What happens to all the coal jobs?” https://www.kuer.org/business-economy/2023-04-04/as-utahs-rocky-mountain-power-looks-to-nuclear-power-what-happens-to-all-the-coal-jobs
  7. Global Energy Monitor — Hunter Power Plant. https://www.gem.wiki/Hunter_Power_Plant
  8. Global Energy Monitor — Huntington Power Plant. https://www.gem.wiki/Huntington_Power_Plant
  9. Emery County Economic Development — Electric Power Generation & Delivery. https://emery.utah.gov/home/department-directory/economic-development/electric-power-generation-delivery/
  10. Salt Lake Tribune (Dec 2023) — Lila Canyon mine idled; 150 layoffs. https://www.sltrib.com/news/2023/12/21/utahs-lila-canyon-mine-is-idled/
  11. Utah DEQ — Emery County Coal Resources. https://deq.utah.gov/businesses-facilities/emery-county-coal-resources
  12. BusinessWire (Sept 2024) — rPlus Energies Green River Energy Center groundbreaking. https://www.businesswire.com/news/home/20240920988821/en/rPlus-Energies-Breaks-Ground-on-a-400-Megawatt-Solar-PV-and-400-MW-1600-Megawatt-Hour-Battery-Green-River-Energy-Center
  13. Utah News Dispatch (Sept 2024) — Green River Energy Center, 88,000 homes. https://utahnewsdispatch.com/2024/09/23/new-utah-solar-energy-park-one-of-the-largest-in-us/
  14. Utah Public Radio (Sept 2024) — Green River Energy Center groundbreaking coverage. https://www.upr.org/utah-news/2024-09-23/new-solar-energy-park-in-emery-county-could-power-88-000-homes
  15. Utah Business (May 2025) — “Emery County’s power play” — property tax projections. https://www.utahbusiness.com/industry/2025/05/20/emery-county-green-river-energy-center-solar-tax-revenue/
  16. University of Utah @theU (2024) — Castle Solar commencement, April 2, 2024. https://attheu.utah.edu/facultystaff/the-castle-solar-project-a-beacon-of-sustainability-and-economic-growth/
  17. Kem C. Gardner Policy Institute (May 2022) — 40-year economic projections, Utah coal counties. https://gardner.utah.edu/news/long-term-planning-projections-highlight-economic-challenges-opportunities-in-utahs-coal-counties/
  18. Yahoo Finance / Kem C. Gardner (2024) — Coal production update, Fossil Rock mine. https://www.yahoo.com/news/coal-production-presence-utah-energy-213750422.html
  19. EDA.gov — U-REDI coalition; Assistance to Coal Communities. https://www.eda.gov/sites/default/files/2022-09/Utah_Rural_Energy_Diversification_&_Innovation_Cluster.pdf
  20. U.S. Census Bureau QuickFacts — Emery County, Utah. https://www.census.gov/quickfacts/fact/table/emerycountyutah/PST045224
  21. DataUSA — Emery County, UT (2023 employment). https://datausa.io/profile/geo/emery-county-ut
  22. KUER (Feb 2025) — Utah population growth; eight counties declining. https://www.kuer.org/business-economy/2025-02-13/utahs-fast-paced-population-growth-starts-to-lift-its-foot-off-the-pedal
  23. Headwaters Economics (2023) — Outdoor Recreation & Economic Diversification. https://headwaterseconomics.org/wp-content/uploads/HE_2023_Outdoor-Recreation-Economic-Diversification-Resource-Dependent-Communities.pdf
  24. visitemerycounty.com — Attractions, Cleveland-Lloyd Dinosaur Quarry.

Proposed Maps / Figures

  1. Energy Infrastructure Map — Emery County base map showing: Hunter Plant (Castle Dale), Huntington Plant (Huntington city), former Lila Canyon Mine location, Green River Energy Center (near Ferron), Castle Solar site. Differentiate coal vs. renewable vs. closed facilities with symbols. Source: public GIS data; USGS; DEQ mine permit locations.
  2. Coal Production Chart — Bar or line chart: Utah/Emery County coal output 2000–2024 (short tons per year). Sources: EIA, Kem C. Gardner.
  3. Population Trend Chart — Line chart: Emery County population 2000–2025. Sources: U.S. Census Bureau decennial + ACS estimates.
  4. Green River Energy Center Infographic — Key specs: 400 MW solar, 1,600 MWh storage, 500 construction jobs, 15-20 permanent jobs, 88,000 homes, $1.1B investment, $55M projected property taxes. Clean visual for general readers.
  5. Property Tax Base Shift Chart — Projected Emery County property tax composition: coal/utilities vs. renewables vs. other, 2020–2040. Sources: county assessor data; Kem C. Gardner projections.

Proposed Tables

  1. Energy Facilities Summary Table — Columns: Facility | Type | Capacity | Owner | Date Active | Employment | Status (2026)

    • Hunter Plant | Coal | 1,577 MW | PacifiCorp/UAMPS/Deseret | 1978 | ~300+ | Operating (no retirement date)
    • Huntington Plant | Coal | 1,037 MW | PacifiCorp | 1974 | 187 | Operating (no retirement date)
    • Castle Solar | Solar | 40 MW AC | Castle Solar LLC | 2024 | small | Operating
    • Green River Energy Center | Solar+Storage | 400 MW / 1,600 MWh | rPlus Energies | 2026 (est.) | 15–20 | Under construction (2024–2026)
    • Lila Canyon Mine | Underground coal | — | ACNR/Emery Co. Coal | 1980s–2024 | 152 (at closure) | Sealed (Jan 2024)

  2. Emery County Economic Indicators — Population (2010/2023/2025), median household income, per capita income, poverty rate, top 3 employment sectors (2023). Sources: Census, DataUSA.