Capital Program Planning for Colorado Electric Utilities

by | Oct 21, 2026

Colorado · Electric & Grid Utilities

Colorado is wiring in 5,500 MW of clean power and $1.7B of new transmission by 2030. Your capital plan is where it lands.

Coal is retiring on a fixed clock, data-center load is arriving faster than the queue can absorb, and a sparking power line already cost the state its most destructive fire. Every one of those forces reshuffles the projects on your list. Invizion helps electric utilities re-sequence a capital portfolio in a click — and defend every decision to the PUC or a board.

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The bottom line: Colorado is retiring its coal on a fixed clock while wiring in 5,500 MW of clean power and a $1.7B transmission backbone — all as data-center load and wildfire mandates stack up. The utilities that keep the lights on will be the ones whose capital plans can re-sequence as fast as the forecast changes.
5,500 MW1
New wind, solar and other resources Xcel plans to add in Colorado through 2030.
$1.7B1
Colorado's Power Pathway — about 550 miles of new double-circuit 345 kV transmission.
~85%2
Carbon cut Xcel targets by 2030 (from 2005) as its remaining Colorado coal retires.
$685M3
High Plains project: 250 MW of solar plus a 200 MW battery, online December 2027.

The Colorado Landscape

Four forces are moving your project list at once

None of these is theoretical, and none of them waits for your next budget cycle. Together they mean the capital plan you approved last year may already be the wrong plan.

Demand — Load Growth

Large loads, arriving faster than the queue

WECC projects Western electricity demand rising about 25% over the next decade, with peak demand climbing from roughly 160 GW in 2026 to 191 GW by 2035 — driven heavily by data centers and AI.4

Colorado is feeling it directly: in April 2026 Xcel asked the PUC for a large-load tariff so new customers of 50 MW or more — and some as small as 20 MW — pay for the transmission, substations, and new generation they trigger, with 15-year-plus commitments, rather than shifting those costs onto existing ratepayers.5

Reliability — Resource Adequacy

Thin margins on a weather-dependent fleet

WECC warns the West could face energy shortfalls as early as 2028, and roughly 90% of planned additions are inverter-based — solar, wind, storage — with about half still classed as speculative.4 The reliability margin now depends on projects landing on schedule.

Colorado generated about 58.8 million MWh in 2024 — natural gas is now its leading source — against roughly 19,817 MW of summer capacity.6 Every retirement and every delayed interconnection tightens that balance.

Generation — The Transition

Coal out, clean in — on a capital clock

Xcel plans to retire its remaining Colorado coal at Comanche (Pueblo) by the end of 2030 and Hayden by 2028, targeting nearly an 85% carbon cut from 2005 levels by 2030 — up from 53% already achieved by 2023.2

Replacing that firm capacity is a build program, not a switch: the $685 million High Plains project alone adds 250 MW of solar and a 200 MW battery in Morgan County by December 2027, part of a plan for about 80% renewable electricity by the end of the decade.3

Capital — Grid & Wildfire

Build out and harden, at the same time

Colorado's Power Pathway is a $1.7 billion, ~550-mile 345 kV backbone built to carry the roughly 5,500 MW of new resources Xcel is adding through 2030, with segments phasing in from 2025 to 2027.1

On top of growth, wildfire is now a funded obligation. The Marshall Fire — Colorado's most destructive, with about 1,084 structures lost and more than $2 billion in damage — was traced in part to a sparking Xcel power line.7 Xcel's 2025–2027 Wildfire Mitigation Plan, approved by the PUC in June 2025, layers public-safety power shutoffs, AI smoke detection, and hardening onto the same capital budget.8

Who Runs Colorado's Grid

Two investor-owned utilities, big municipal and public power, and a wide co-op footprint

Colorado has only two PUC-regulated electric investor-owned utilities. The rest of the state is served by municipal utilities, a public-power wholesaler, and generation-and-transmission and distribution cooperatives — the pressures are shared; the accountability path differs.

Investor-owned utilities

Rates & capital recovery regulated by the Colorado PUC

Xcel Energy (Public Service Co. of Colorado) Colorado's largest electric utility; Xcel serves ~3.9M electric customers across 8 states9
Black Hills Energy — Colorado Electric Serves the Pueblo area and southern Colorado10

Colorado has just two investor-owned electric utilities — so Xcel's build-out, from the $1.7B Power Pathway to the $685M High Plains project, sets much of the state's grid-capital agenda.13

Municipal, public power & cooperatives

Governed by city councils, boards & members, not PUC rates

Colorado Springs Utilities Municipal four-service utility; expanding battery storage11
Platte River Power Authority Wholesale power for Estes Park, Fort Collins, Longmont & Loveland; working toward a noncarbon future12
Tri-State G&T Wholesale to member co-ops across CO, NE, NM & WY; ~200,000 sq. mi.13
Holy Cross, United Power, CORE Electric Distribution cooperatives

Rate-Setting & Oversight

Every capital dollar has to be defensible

Whether you answer to the Public Utilities Commission, a city council, or an elected board, the question is the same: why this project, why now, why at this cost?

  • Colorado Public Utilities Commission (PUC) regulates rates, cost recovery, and Electric Resource / Clean Energy Plans for the investor-owned utilities — Xcel (Public Service) and Black Hills.14
  • The Electric Resource Plan is a two-phase process. Xcel's plan to replace its remaining coal moves through PUC review with a decision expected in fall 2026 — approvals are not a formality.2
  • Xcel's Colorado electric rate request sought a net revenue increase of about $312.2 million, following more than $2.1 billion invested in generation, transmission, and distribution — including roughly $310.3 million on wildfire mitigation.15
  • Wildfire cost recovery via securitization. Xcel is financing its PUC-approved 2025–2027 Wildfire Mitigation Plan through securitization to hold down bill impact — a structure the Commission must sign off on.8

Funding On The Table

The money is moving — can your plan absorb it?

Colorado utilities have more grid and clean-energy capital available than they've had in a generation. The constraint is readiness: which projects qualify, which are shovel-ready, and how the timing lines up.

  • $25.6M in DOE grid-resilience formula funding awarded to Colorado (via the Energy Office and DOLA) for microgrids, grid hardening for small communities, and advanced grid monitoring.16
  • $156M to expand solar for Colorado — federal Solar for All funding to bring distributed clean power to more customers and lower bills.17
  • DOE's GRIP program — $7.6B nationally across 105 projects in all 50 states — is competitive money for transmission, resilience, and smart-grid work that Colorado utilities compete for.18
  • IRA elective-pay (direct-pay) credits put utility-scale solar and storage in reach for public power, munis, and co-ops like Platte River, Colorado Springs Utilities, and Tri-State — entities that historically could not use tax credits.

Where Invizion Fits

Turn Colorado's grid build-out into a defensible capital plan

Invizion is scenario-based capital portfolio optimization built for utilities. When load forecasts jump, a grant lands, or a retirement date moves, you don't re-plan by hand for weeks — you model it and decide with a record to stand behind.

1

Model the “what-if” before it's forced on you

A data-center interconnect, a delayed transmission line, a moved retirement date — build the scenario and see the impact on the whole portfolio, side by side with today's plan.

2

Re-sequence 500 projects in a click

When priorities move, Invizion re-orders the portfolio automatically — accelerating, stretching, or deferring projects against the constraints you set, not weeks of spreadsheet surgery.

3

Give regulators or your board a defensible record

Every prioritization and trade-off is captured. When you're asked “why this project, why now,” the answer is documented — not reconstructed after the fact.

Colorado's Grid, In Brief

Questions Colorado utility leaders are asking

Short, sourced answers — the same facts we dig into with utilities looking at their capital programs.

How fast is electricity demand growing in Colorado and the West?
WECC projects Western demand up about 25% over the next decade, with peak load rising from roughly 160 GW in 2026 to 191 GW by 2035, largely from data centers and AI. Colorado has proposed a large-load tariff so new 50 MW-plus customers cover the infrastructure they trigger.45
What's happening to Colorado's coal plants?
Xcel plans to retire its Hayden units by 2028 and its remaining coal at Comanche in Pueblo by the end of 2030, targeting nearly an 85% carbon reduction from 2005 levels by 2030.2
What is Colorado's Power Pathway?
It is a roughly $1.7 billion, ~550-mile double-circuit 345 kV transmission backbone Xcel is building, with segments phasing in from 2025 to 2027, to carry about 5,500 MW of new wind, solar, and other resources by 2030.1
Does the PUC set my utility's rates?
The Colorado Public Utilities Commission regulates rates and resource plans for the investor-owned utilities — Xcel and Black Hills. Municipal utilities like Colorado Springs Utilities and public-power and cooperative systems set their own rates through councils, boards, and members.14
How is wildfire risk changing utility capital plans?
The Marshall Fire — Colorado's most destructive, over $2 billion in damage and about 1,084 structures — was traced in part to an Xcel power line. Xcel's PUC-approved 2025–2027 Wildfire Mitigation Plan now layers shutoffs, AI detection, and hardening onto the capital budget.78
How does Invizion help Colorado electric utilities plan capital?
Invizion is scenario-based capital portfolio optimization for utilities. It lets you model how a load surge, a grant, a coal-retirement date, or a wildfire-mitigation mandate reshuffles your whole project list, re-sequence the portfolio automatically, and keep a defensible record of every decision for the PUC or your board.

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About the Author

GB

Guy Barlow

President, Invizion

Guy Barlow leads Invizion, a capital lifecycle management platform for water and wastewater utilities. He has spent two decades at the intersection of utility capital programs, funding, and analytics, helping utilities make faster, more defensible capital decisions.

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Invizion helps utilities model, optimize, and defend their capital programs. Explore how it works, or read our latest thinking on capital planning across the utility sector.

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This briefing was last reviewed September 2026.

Sources

  1. Colorado's Power Pathway (Xcel Energy) — ~$1.7B, ~550 miles of new double-circuit 345 kV line carrying ~5,500 MW of new resources by 2030; segments in service 2025–2027. coloradospowerpathway.com
  2. Xcel Energy — “takes step to replace remaining coal plants”: Comanche (Pueblo) retires end of 2030, Hayden by 2028; ~85% carbon cut by 2030 vs 2005 (53% by 2023); PUC decision expected fall 2026, 2024. newsroom.xcelenergy.com
  3. Xcel Energy — High Plains Solar + Battery Energy Storage Project, Morgan County: $685M, 250 MW solar + 200 MW battery, in service December 2027; ~80% renewable by end of decade, 2026. newsroom.xcelenergy.com
  4. WECC 2025 Western Assessment of Resource Adequacy — Western demand +~25% over the decade (peak ~160 GW 2026 to 191 GW 2035); shortfalls possible by 2028; ~90% of additions inverter-based, ~half speculative. feature.wecc.org
  5. Xcel Energy — large-load / data-center tariff proposal to the Colorado PUC: 50 MW-plus (and some 20–50 MW) customers to cover infrastructure and generation costs, 15-year-plus commitments, April 2026. newsroom.xcelenergy.com
  6. U.S. Energy Information Administration — Colorado electricity profile: ~58.8M MWh net generation (2024), natural gas leading source, ~19,817 MW net summer capacity. eia.gov
  7. Marshall Fire (Boulder County, Dec 30, 2021) — ~1,084 structures lost, $2B+ damage, traced in part to a sparking Xcel Energy power line (Sheriff's finding, June 2023). en.wikipedia.org
  8. Xcel Energy — Colorado PUC approves 2025–2027 Wildfire Mitigation Plan (public-safety power shutoffs, AI smoke detection, hardening; financed via securitization), June 2025. newsroom.xcelenergy.com
  9. Xcel Energy (corporate) — ~3.9M electric customers across 8 states; target of 100% carbon-free electricity by 2050; parent of Public Service Company of Colorado. en.wikipedia.org
  10. Black Hills Energy — Colorado Electric serves the Pueblo area and southern Colorado (Colorado PUC-regulated). en.wikipedia.org
  11. Colorado Springs Utilities — municipal four-service utility (electric, gas, water, wastewater) expanding battery storage. csu.org
  12. Platte River Power Authority — wholesale power for Estes Park, Fort Collins, Longmont and Loveland; working toward a noncarbon energy future (Rawhide Energy Station). prpa.org
  13. Tri-State Generation and Transmission — wholesale power to member cooperatives across Colorado, Nebraska, New Mexico and Wyoming; ~200,000 sq. mi. serving ~1M homes and businesses. tristate.coop
  14. Colorado Public Utilities Commission — regulates rates, cost recovery, and Electric Resource / Clean Energy Plans for investor-owned electric utilities (Xcel, Black Hills). puc.colorado.gov
  15. Xcel Energy — Colorado electric rate request: ~$312.2M net revenue increase after $2.1B+ invested in generation/T&D, including ~$310.3M on wildfire mitigation, 2022. newsroom.xcelenergy.com
  16. Colorado Energy Office — $25.6M in DOE electric grid-resilience formula funding for microgrids, grid hardening, and advanced grid monitoring. energyoffice.colorado.gov
  17. Colorado Energy Office — Colorado receives $156M to expand solar energy and lower customer costs (Solar for All), 2024. energyoffice.colorado.gov
  18. U.S. DOE Grid Deployment Office — Grid Resilience and Innovation Partnerships (GRIP): $7.6B across 105 projects in all 50 states and D.C. energy.gov