Image: The Nature Conservancy
A former coal mine in Colorado sits quiet now - stripped, capped, and waiting. Under a law signed this spring, it could be generating solar power within three years, without a single acre of natural land cleared to make room for it.
That one detail explains why a string of otherwise technical state legislative wins matters. The Nature Conservancy helped advance 12 state climate and clean energy policies in the first six months of 2026 alone, following 10 more the previous year, across six states: Colorado, Iowa, Oregon, and three others where the organisation's policy teams were embedded in local coalitions. Twenty-two policies. Eighteen months. A pace that surprised even TNC's own state advocates.
How States Filled the Gap
Image: The Nature Conservancy
State governments have always controlled energy planning, land use, and utility regulation. For years, though, federal policy set the tempo. That arrangement has unwound. As Washington's attention shifted and several federal climate programmes stalled or faced rollback attempts, state legislatures began moving faster and more experimentally than any top-down directive had managed.
TNC read the room early. At the start of 2026, it released a state policy roadmap - a practical guide for lawmakers on how to write clean energy legislation that serves both communities and ecosystems. Several of this year's bills track closely with its recommendations. But the organisation's teams were fighting on two fronts simultaneously: advancing new laws while also defending existing climate protections against repeal efforts in other chambers. Progress, in this environment, means holding ground as much as gaining it.
Not every bill sailed through. In Colorado, utility industry groups initially pushed back on House Bill 26-1081, which requires power companies to evaluate "advanced transmission technologies" - software and hardware upgrades that extract more capacity from existing lines - before approving expensive new infrastructure. Critics argued the mandate would slow grid investment. Supporters countered that it would actually accelerate clean energy delivery by reducing costs and avoiding lengthy siting battles. The bill passed.
The Three Laws That Changed the Map
Colorado's other headline measure, House Bill 26-1268, created a local-led process to convert brownfields, former mines, and capped landfills into sites for renewable energy and storage projects. The legislation is deliberately targeted: use land that has already paid its ecological price, and redirect development pressure away from forests, wetlands, and undisturbed habitats. Environmental advocates had pushed for this approach for years; what changed in 2026 was the political appetite to act on it.
Iowa added a different piece. Senate File 2214 allows new transmission lines to be built along interstate highway corridors, routing them through a single entity - the Iowa Department of Transportation - rather than requiring developers to negotiate with dozens of private landowners. The process had been a bureaucratic bottleneck for years, delaying projects and inflating costs. Some rural landowner groups raised concerns about corridor planning during the legislative debate, but the bill's supporters argued that following existing roads offered a far less disruptive path than cutting new rights-of-way across agricultural land. Iowa passed it.
Oregon passed two laws focused on a quieter problem: making sure clean energy capacity already approved actually gets built, and that available federal and state funding does not lapse before anyone claims it. Less visible than a landmark siting bill, but TNC's state teams regard these implementation fixes as essential plumbing - the difference between a policy that exists and one that works.
A Model Built on Trust
TNC credits much of its legislative success to the NextGen Highways coalition approach, deployed in both Iowa and Colorado. Rather than lobbying from the outside, the model brings conservation groups, utilities, and local governments together around shared goals before a bill is even drafted. The relationships built through that process gave advocates credibility in rooms where environmental organisations are sometimes viewed with suspicion.
That approach is spreading to other states. For conservation groups accustomed to fighting industry at every turn, the coalition model represents a genuine shift - not a compromise of goals, but a different theory of how to reach them.
The 12 wins also matter beyond TNC's own framing. Each state that passes a brownfield-siting law or a transmission-corridor bill creates a working example other legislatures can study and adapt. Colorado's mine-reclamation process will be watched closely by states across the Mountain West that face similar questions about what to do with the remnants of extractive industries.
Which brings it back to that quiet stretch of land in Colorado - scarred, capped, and now, under state law, eligible for a second life. The operators who eventually install panels there will not need to clear a single tree. The coal is gone. The damage is done. What remains is the question of what comes next, and one state legislature has already answered it.
This article was researched and written with AI assistance, then reviewed for accuracy and quality. DRS Web Development uses AI tools to help produce content faster while maintaining editorial standards.