Ask a developer what killed their last project and the answer is rarely the technology. It is usually a county: a board that changed the setback rule mid-review, a township that imposed a moratorium the week before the hearing, or a neighbor group that found the one ordinance nobody on the development team had read. Energy projects are permitted locally in most of the United States, and local rules are where national ambitions go to be measured — in feet from a property line.
The National Renewable Energy Laboratory has now counted those rules, and the count itself tells a story. Researchers identified 1,853 local wind ordinances in effect in 2022, up from 286 in 2018, alongside 839 solar ordinances in 2022. That sixfold growth in wind ordinances in four years is not a footnote to the energy transition. It is the energy transition, arriving town by town, each town writing its own terms for hosting it. A developer with a national pipeline and a single siting playbook is now carrying a map that no longer matches the territory.
The substance of those ordinances is mostly setbacks: required distances from property lines, structures, roads, transmission lines, and water, plus height limits, noise limits, shadow-flicker limits, lot-size rules, and, in some jurisdictions, outright bans or moratoriums. NREL's analysis found that extrapolating setbacks nationwide could reduce available wind resources by up to 87% and solar resources by up to 38%, depending on setback size, and that total U.S. wind technical potential is seven times greater under the least restrictive siting regimes than under the most restrictive — 7,800 GW under the most lenient conditions against 2,280 GW under the most stringent. Setbacks are not red tape in the abstract. They are the variable that decides whether a county has a wind industry at all.
What developers need from land follows directly, and it is more specific than most site checklists admit. First, ordinance certainty before land money: the full setback, height, noise, and flicker rules for the exact township, plus any pending amendments and any moratorium history, read before an option is signed rather than after. Second, a land package that survives the rules: parcels large enough that setbacks leave a buildable footprint, with participating landowners contiguous enough that one holdout cannot strand a turbine pad. Third, a county relationship built before the application: early briefings, a named local contact, and a community-benefits conversation that starts before opponents frame the project. Developers who arrive with all three still face hard hearings. Developers who arrive without the first rarely reach a hearing at all.
The counterargument is that local control is the system working as designed: communities should decide what gets built near their homes, and a developer who cannot win a county hearing has not earned the county. That is true, and it is not an excuse to skip the work. It is the reason the work matters. The counties that host the most projects are rarely the counties with no rules; they are the counties with clear, stable, published rules that a developer can design to. Ambiguity kills more projects than stringency does, because stringency can be engineered around and ambiguity cannot.
The buildout numbers make the stakes concrete. The Solar Energy Industries Association and Wood Mackenzie reported 11.7 GW of solar installed in the third quarter of 2025 alone — the third-largest quarter on record — pushing the year's total past 30 GW, with solar accounting for 58% of all new generating capacity added in the first nine months of the year and solar plus storage accounting for 85%. That volume was built county by county, under the ordinances NREL counted. The developers who installed it did not avoid zoning. They mastered it, one jurisdiction at a time, and the next 30 GW will reward the same discipline. In energy development, the map is not the resource map. The map is the zoning map — and the developer who reads it first, wins the site.
Sources: National Renewable Energy Laboratory, siting ordinances research (1,853 wind ordinances in 2022 vs 286 in 2018; 839 solar ordinances in 2022; setbacks reducing wind resources by up to 87% and solar by up to 38% when extrapolated; wind technical potential 7,800 GW most lenient vs 2,280 GW most stringent; sevenfold difference between least and most restrictive regimes), https://docs.nrel.gov/docs/fy24osti/87476.pdf and https://pv-magazine-usa.com/2023/08/04/local-zoning-ordinances-play-important-role-in-predicting-solar-output/. Solar Energy Industries Association and Wood Mackenzie, U.S. Solar Market Insight Q4 2025 (11.7 GW installed in Q3 2025; over 30 GW year-to-date; solar 58% of new capacity in the first nine months of 2025; solar plus storage 85%), as reported by TaiyangNews, https://taiyangnews.info/markets/us-installed-over-11-gw-solar-pv-capacity-in-q3-2025.