What the amendment would do
The measure would embed in Colorado's constitution a guaranteed ability to purchase and sell natural gas, putting the fuel above all other commodities in state law. It is designed to shield gas consumption more than any current state policy and runs opposite the direction some regions are moving.
Supporters argue this is about keeping options open and avoiding forced home electrification.
It takes 55% of the vote to pass. The decision lands Tuesday during the midterms, alongside a packed slate of other ballot questions.
Who is backing it, and who is not
The campaign is supported by a conservative-aligned nonprofit. Advance Colorado's executive vice president, Kristi Burton Brown, said rules from Colorado's Public Utilities Commission and state lawmakers are narrowing the ability to keep gas in homes, and argued the measure would block what she described as the PUC's endpoint of removing natural gas from the state by 2050.
Pfeiffer also noted that about 70% of Colorado households heat with gas and said it is cheaper than electric heat. Colorado ranks eighth nationwide for natural gas reserves, and more than two-thirds of homes rely on the fuel for heat.
On the utility side, "clean heat" plans outlining decarbonization investments to meet state requirements have been filed by Xcel Energy Inc. and Black Hills Energy. An Xcel Energy spokesperson said the firm has not adopted a stance on the amendment. A request for comment to Black Hills Energy went unanswered.
The risks opponents see
Environmental groups and legal experts warn this could upend Colorado's long-term climate strategy and inspire copycat measures in other states. Katharine DuVivier, a University of Denver law professor, said the amendment could shut down the state's clean energy shift and invite lawsuits to block electric-only development in places such as Boulder, which bars fossil fuels in most new construction.
Megan Kemp of Earthjustice said, "There are so many laws that we see as potentially vulnerable and that could be potentially challenged should this make its way into our constitution." She also argued utilities are inflating the case for new gas plants and pipelines and that those costs would end up on customer bills. While the measure would not directly change rates, opponents say it could indirectly raise them by allowing gas utilities to seek increases tied to energy-hungry data centers, pointing to Xcel's planning that anticipates significant new demand from large-load data facilities.
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Critics add that oil and gas developers could claim stronger legal footing for new pipelines and related projects by citing a constitutional right to natural gas. DuVivier said the constitution would supersede the utilities commission's attempts to regulate gas service.
How this fits into the wider policy fight
Across the country, Tuesday's vote comes as pushback to the clean-energy transition has been building. US President Donald Trump has worked to reverse much of the clean-energy agenda advanced by his two Democratic predecessors, while supporting expansion of conventional energy and loosening environmental regulations. His latest plan would scale back methane limits on oil and gas operators, changing the 2024 standards that former President Joe Biden put in place.
Other parts of the country are moving in a different direction. In Washington state, voters previously approved a measure to stop governments from discouraging gas use through building codes, but the state's Supreme Court ultimately struck it down. And this week, Los Angeles acted to prohibit new oil and gas wells and to phase out existing ones.
There is no public polling ahead of Tuesday's decision. Recent history is not a layup for the sponsors either: Ballotpedia notes conservative-leaning measures have stumbled in Colorado lately, including a 2021 attempt to cut property tax rates and a 2020 initiative to ban abortion after 22 weeks.
Why investors should care
Legal challenges could influence timelines for electric-only development, gas infrastructure buildouts, and, over time, utility capital spending and allowed returns.
The bottom line: the measure does not directly reset rates, but opponents see a path to higher costs through additional gas infrastructure and potential rate cases, especially with data centers adding load. With no polling to steer expectations, Tuesday's 55% threshold is the number to watch for anyone exposed to Colorado utilities, oil and gas infrastructure, or regional power demand.
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