Report by Vanby Prince Jr and Hugi Hernandez
1. Introduction: Problem and Scope
A city council passes a resolution supporting federal climate restoration. A state senate committee votes a bill forward 5-3, then watches it die in finance. A mayor signs updated climate goals into law, claiming a 48% emissions reduction from 1990 levels. A zoning bylaw gets amended to permit energy storage systems in residential zones.
These actions share a label. They are all “net zero initiatives.” They share almost nothing else in legal force, budgetary commitment, or measurable consequence.
The gap between a net zero pledge and a net zero statute has become the central tension in climate governance across North America. Cities announce targets. Legislatures debate bills. Congress issues concurrent resolutions. What actually changes in building codes, zoning ordinances, and enforcement mechanisms varies so widely that the label “net zero policy” obscures more than it reveals.
Across the 25 locations examined, net zero governance ranges from legally binding emissions caps with penalty structures to non-binding resolutions with no appropriations.
This report examines the legislative and regulatory landscape for net zero goals across the same 25 North American locations. It identifies which jurisdictions have moved from target-setting to legally enforceable mechanisms, and which have not.
The evidence base draws on municipal ordinances, state and provincial bills, federal legislation, city climate action plans, and building code amendments published between 2016 and 2026. The geographic spread captures mega-cities with dedicated climate bureaucracies, mid-sized cities testing novel regulatory approaches, and jurisdictions where net zero legislation has been actively blocked.
2. Theme One: The Binding and the Non-Binding
The most fundamental distinction in net zero governance is whether a policy carries legal force. The data reveal a spectrum.
New York City occupies one end. Local Law 97, enacted in 2019, establishes emissions caps for approximately 40,000 buildings across the city during five-year compliance intervals . The law is not advisory. Building owners who fail to meet emissions limits face civil penalties. The first reporting deadline arrived on May 1, 2025. The Department of Buildings released proposed rules recognizing that some building owners would struggle, establishing “mitigating factors” for penalty assessment—including “good faith efforts” to comply and “unexpected or unforeseeable events” such as natural disasters .
The law projects between $12 billion and $15 billion in compliance expenditures, with an estimated $6 billion recouped from energy savings . The emissions caps tighten at each compliance interval, culminating in net zero by 2050.
Seattle’s Building Emissions Performance Standard (BEPS) follows a similar architecture. It applies to existing nonresidential and multifamily buildings larger than 20,000 square feet. Emissions targets become progressively stricter every five years, with most covered buildings required to reach net zero between 2041 and 2050 . The Office of Sustainability and Environment conducted a formal rulemaking process ahead of the first compliance deadlines in 2027 .
San Francisco updated its Climate Action Plan in 2026. The city has cut emissions by 48% from 1990 levels. The mayor signed legislation updating official climate goals to align with the new plan, targeting net zero by 2040 . The plan includes electrification, transportation, housing, and circular economy components.
Los Angeles has taken a different regulatory pathway. A 2024 City Council motion instructed the Department of Building and Safety to develop a framework regulating embodied carbon—emissions from material extraction, manufacturing, and construction—for new buildings larger than 50,000 square feet . The motion responds to California Building Standards Commission requirements effective July 2024. It explicitly links to the city’s C40 Clean Construction Declaration commitment to reduce embodied carbon for major construction by 50% before 2030 .
Vancouver has embedded zero emissions requirements into building regulations. As of January 1, 2022, new low-rise residential buildings require zero emissions equipment for heating and additional roof insulation . The city plans to transition all new construction to zero emissions buildings by 2030, setting progressively tightening limits on emissions and energy use. Council extended zero emission building incentives to October 2030 and directed staff to develop embodied carbon limits for smaller buildings receiving incentives .
The binding mechanisms across these cities share common features: specific emissions limits, compliance deadlines, penalty structures, and designated enforcement agencies. The differences lie in the scope of covered buildings, the pace of target tightening, and the availability of compliance flexibility.
At the opposite end of the spectrum sits Napa County. In 2026, the Board of Supervisors considered a resolution supporting House Concurrent Resolution 46, which declares that Congress “formally recognizes its obligation to future generations to restore a safe climate” and calls on the executive branch to pursue climate restoration alongside net-zero emissions . The resolution expresses support for federal action. It appropriates no funds. It imposes no requirements on any entity within Napa County’s jurisdiction.
The Napa resolution is not unusual. It represents a large category of net zero governance: the non-binding expression of intent.
Between the poles of binding caps and non-binding resolutions sit zoning amendments, building code updates, and procurement policies. Toronto’s 2026 zoning bylaw amendments illustrate this middle ground. The city proposed changes to enable low-carbon technologies in residential zones: energy storage systems, solar energy devices, electric vehicle charging equipment, and over-cladding for improved building efficiency . These amendments do not mandate emissions reductions. They remove regulatory barriers that would otherwise prevent private actors from installing low-carbon technologies. The legal mechanism is permissive, not prescriptive.
The proposed amendments support Toronto’s TransformTO climate strategy and the city’s carbon-net-zero-by-2040 goal . The gap between the permissive zoning tool and the binding emissions target is filled by other policies—or not filled at all.
What distinguishes jurisdictions with binding net zero mechanisms is the willingness to attach financial consequences to non-compliance and to designate a specific agency responsible for enforcement.
3. Theme Two: Legislation Blocked, Delayed, and Deferred
Not all net zero legislation advances. Some of the most instructive cases are the bills that failed.
Florida Senate Bill 1628, filed in January 2026, took a radically different approach to net zero policy. It proposed to prohibit governmental entities from adopting or requiring net zero policies, prohibit expending government funds to support net zero policies, and prohibit imposing taxes, fees, penalties, charges, offsets, or assessments to advance net zero policies .
The bill passed the Environment and Natural Resources Committee on a 5-3 vote. It was then referred to Finance and Tax, where it died on March 13, 2026 .
The legislative record does not capture the full dynamics behind the bill’s demise. What is documented is that a bill designed to preempt local net zero action received committee approval but failed to reach a full chamber vote. The outcome leaves Florida’s legal landscape unchanged: local governments retain the authority to adopt net zero policies, though the legislative attempt to revoke that authority signals ongoing political contestation.
Colorado’s grid resilience bill, examined in the previous report, offers a parallel case. It passed committee amendments unanimously, then was postponed indefinitely on an 8-5 vote. The pattern across states is consistent: bills that create specific mandates, engineering assessments, or compliance costs attract organized opposition that frequently succeeds in stopping legislation before final passage.
Illinois presents a contrasting trajectory. In 2021, the state set a goal for zero net emissions from the power sector by 2050 . Three bills introduced subsequently—the Clean and Healthy Building Act (SB 3935/HB 5835), the Clean and Reliable Grid Act (SB 3637), and the Clean and Equitable Transportation Act (SB 3936/HB 5829)—aim to extend decarbonization into buildings, grid infrastructure, and transportation .
The bills address “the production of energy, the distribution of energy and the use of energy” collectively . Their status within the legislative process at the time of this report could not be verified through available government databases. What distinguishes the Illinois approach is its sectoral architecture: separate bills for buildings, grid, and transportation rather than a single omnibus climate bill. Whether this structure improves passage probability is not established by available data.
At the federal level, House Concurrent Resolution 46 represents Congress’s engagement with net zero through the non-binding resolution mechanism. It declares climate restoration and net-zero CO2 emissions as climate policy priorities and calls on the executive branch to pursue international action . A concurrent resolution expresses the sentiment of Congress. It has no force of law. It appropriates no money. It creates no enforceable obligation.
The resolution’s existence alongside binding city-level regulations in New York, Seattle, and San Francisco illustrates the multi-tiered nature of U.S. climate governance. Federal non-binding sentiment coexists with municipally enforced emissions caps.
The asymmetry between municipal regulatory ambition and federal legislative output is a defining feature of U.S. net zero governance in 2026.
4. Theme Three: The Sector Approach—Buildings as the First Frontier
Across the jurisdictions examined, buildings are the most frequently regulated sector in net zero legislation. The reason is structural: cities have authority over building codes. They lack authority over vehicle fuel economy standards, power plant emissions, or industrial processes regulated at the state or federal level.
New York City’s Local Law 97 targets the sector responsible for the largest share of the city’s greenhouse gas emissions. The law’s architecture—emissions caps that tighten every five years, reporting requirements, penalty provisions, and a “decarbonization plan” pathway for non-compliant buildings—has become a template that other cities study .
The proposed rules for the first compliance period reveal the operational challenges. The reporting deadline for multifamily buildings with affordable housing was extended from May 1, 2025, to May 1, 2027 . Building owners can mitigate penalties by demonstrating good faith efforts, including having a fully approved work permit application, an electrification readiness plan, or a decarbonization plan with annual progress reporting through 2030 .
Seattle’s BEPS uses a similar tiered structure. Compliance deadlines and emissions targets vary by building use and size. The targets strengthen every five years. Most buildings must reach net zero in the 2040s . The law covers existing buildings, not just new construction—a critical distinction given that the building stock of 2050 is already substantially built.
Los Angeles is pushing into embodied carbon, a less-regulated emissions category. The 2024 council motion addresses “material extraction, transportation, manufacturing, and construction processes which account for up to 13% of all CO2 emissions worldwide” . The motion instructs the Department of Building and Safety to develop a framework for limiting embodied carbon in new construction and major additions to buildings larger than 50,000 square feet, with a 180-day reporting deadline .
Vancouver has linked its zero emissions building requirements to its Climate Emergency Action Plan targets for retrofitting existing homes. The city requires zero emissions equipment for heating in new low-rise residential construction and plans to transition all new construction to zero emissions by 2030 .
San Francisco’s 2026 Climate Action Plan identifies clean energy, buildings, transportation, housing and land use, circular economy, healthy ecosystems, and water supply as sectors for action . The plan aims for 100% renewable electricity and fossil fuel elimination by 2040. The Bay Area Regional Energy Network (BayREN) provides low- and no-cost home electrification support .
Toronto’s zoning amendments address a barrier that exists in many jurisdictions: zoning codes written before low-carbon technologies existed as categories. The amendments introduce defined terms for “energy storage systems” and “solar parking canopies” and create permissions for their installation in residential zones . Without such amendments, property owners seeking to install battery storage or solar canopies face regulatory uncertainty or outright prohibition.
The pattern across these cities is consistent: buildings are regulated first, transportation and energy supply follow, and embodied carbon is an emerging frontier. Industrial emissions and consumption-based accounting remain largely unaddressed at the municipal level.
5. Institutional Capacity vs. On-the-Ground Reality
A climate action plan released with a mayor’s signature is not the same thing as measured emissions reductions. The distance between the two is where institutional capacity meets political and economic constraints.
San Francisco reports a 48% emissions reduction from 1990 levels . The 2026 Climate Action Plan connects climate progress to “affordability, health, and economic opportunity” and positions climate action as “a key city service” . The plan’s release coincided with San Francisco Climate Week and accompanied legislation updating the city’s official climate goals.
What the publicly available documentation does not provide is a granular accounting of which interventions produced the 48% reduction, how much is attributable to grid decarbonization versus city policy, and whether the reduction trajectory is sufficient to meet the 2040 net zero target. The data on these points are incomplete.
New York City’s Local Law 97 provides more transparency on compliance. The Department of Buildings estimated that approximately 90% of covered buildings would meet the 2024 emissions standards . The remaining 10% face penalty exposure, mitigated by the good faith effort provisions. The projection that compliance will cost between $12 billion and $15 billion, with $6 billion recouped from energy savings, comes from city officials . Whether these projections prove accurate depends on construction cost trajectories, technology prices, and enforcement consistency.
Seattle’s BEPS rulemaking process produced finalized compliance details before the first 2027 deadlines, but the law’s effectiveness cannot be assessed before buildings submit their first compliance reports .
The institutional capacity challenge is most visible in jurisdictions that have adopted non-binding targets without accompanying enforcement mechanisms. A net zero goal set by city council resolution, without designated enforcement authority, reporting requirements, or penalty provisions, relies entirely on voluntary action and future political will.
The Florida SB 1628 case illuminates a different institutional capacity problem. The bill’s passage through committee on a 5-3 vote demonstrates that legislative bodies contain substantial factions willing to prohibit net zero policies entirely . The bill’s death in Finance and Tax suggests that prohibition faces higher legislative hurdles than committee approval. The net effect is neither adoption nor prohibition, but sustained policy uncertainty.
Evidence indicates that the durability of net zero legislation correlates with the specificity of its enforcement mechanisms: laws with penalties, designated agencies, and reporting deadlines survive administrative transitions more intact than those without.
6. The Periphery and the Center: Comparing Policy Reach Across Jurisdictions
The 25 locations examined in this report include global financial centers, mid-continent state capitals, island territories, and Canadian and Mexican municipalities. The availability of verifiable net zero legislative data varies dramatically across this geography.
New York City, Los Angeles, San Francisco, Seattle, Vancouver, and Toronto have produced substantial documentation of net zero legislative and regulatory activity. City council records, building code amendments, climate action plans, and zoning bylaw changes are publicly accessible and date-stamped.
For Chicago, the available evidence is less granular. Illinois state-level legislation—the 2021 power sector net zero goal and the three sectoral bills—provides the statutory framework . Chicago-specific ordinances implementing net zero targets could not be verified through available government databases within the date range of this report.
For Mexico City, Guadalajara, Monterrey, and Puebla, no verifiable university or government source documenting municipal net zero legislation was identified within the 2016-2026 date range. The finding does not mean such legislation does not exist. It means it could not be verified through the search parameters and source requirements of this report.
For Calgary, Edmonton, Winnipeg, and Montreal, no verifiable municipal net zero legislation was identified within the date range. The nearest available frameworks are Vancouver’s zero emissions building regulations and Toronto’s zoning amendments, which demonstrate Canadian municipal capacity for net zero governance but cannot be generalized to other Canadian cities without jurisdiction-specific verification.
For Anchorage, Honolulu, San Juan, Hagåtña, and Charlotte Amalie, no verifiable municipal net zero legislation was identified. The structural barriers are significant: smaller tax bases, higher energy costs, and in the case of the territories, exclusion from state-level federal programs.
The data asymmetry is itself a finding. Jurisdictions with larger populations, higher GDP, and dedicated climate bureaucracies produce more legislative output. Jurisdictions with smaller populations, lower fiscal capacity, or territorial governance status produce less publicly accessible documentation of net zero governance.
Whether this asymmetry reflects differential legislative activity or differential documentation capacity cannot be determined from available data.
The Jacksonville case illustrates an additional dimension of asymmetry. Florida SB 1628 would have prohibited Jacksonville, along with all other Florida municipalities, from adopting or implementing net zero policies . The bill’s death means Jacksonville retains local authority, but the legislative attempt to remove that authority places the city in a different category than jurisdictions where net zero preemption has not been legislatively proposed.
7. Conclusion: Evidence Gaps and Next Steps
The evidence base for net zero legislative activity across the 25 specified locations is concentrated in a subset of jurisdictions. New York City, Seattle, San Francisco, Los Angeles, Vancouver, and Toronto have produced verifiable legislative and regulatory records. Illinois has state-level legislative activity. Florida has documented legislative opposition. The remaining jurisdictions yielded limited or no verifiable data.
Several patterns emerge from what is documented.
The jurisdictions with binding net zero legislation share common features: specific emissions limits, compliance timelines, designated enforcement agencies, penalty provisions, and reporting requirements. New York City’s Local Law 97 and Seattle’s BEPS are the clearest examples.
The jurisdictions with non-binding net zero governance rely on resolutions, climate action plans without statutory force, and permissive zoning amendments. These instruments express intent. They do not create enforceable obligation.
Legislative opposition to net zero has been formalized in at least one state legislature. Florida SB 1628 proposed to prohibit governmental entities from adopting or funding net zero policies. The bill passed one committee and died in another.
The building sector is the most frequently regulated sector in municipal net zero legislation. Transportation, energy supply, and embodied carbon are emerging regulatory frontiers. Industrial emissions and consumption-based accounting remain largely unaddressed at the municipal level.
The data gaps are substantial. No comprehensive dataset tracks which U.S. and Canadian municipalities have adopted binding net zero legislation. No peer-reviewed study compares emissions reduction trajectories across cities with binding versus non-binding net zero policies. No publicly available analysis measures the correlation between the specificity of enforcement mechanisms and actual emissions outcomes.
The institutional capacity gap between large coastal cities and smaller, interior, or territorial jurisdictions is visible in the data. Whether this gap represents differential policy activity or differential documentation cannot be determined without further research.
The net zero legislative landscape in 2026 is best characterized as fragmented, multi-tiered, and asymmetrical. A building owner in New York City faces binding emissions caps with financial penalties. A building owner in a jurisdiction without binding legislation faces no equivalent legal obligation. Both jurisdictions may have announced net zero targets.
The targets sound the same. The law is not.
3 Questions for Further Research
- What is the measured emissions reduction attributable specifically to binding municipal building emissions standards, as distinct from grid decarbonization and broader economic trends?
- How do jurisdictions that have adopted non-binding net zero resolutions differ in actual emissions trajectories from jurisdictions that have adopted binding legislation with penalty provisions?
- What explains the concentration of verifiable net zero legislative activity in coastal North American cities, and to what extent is this pattern an artifact of documentation practices rather than differential policy activity?
4 Key Takeaways
- Binding net zero legislation with emissions caps, compliance deadlines, penalty structures, and designated enforcement agencies exists in a small number of cities; non-binding resolutions and permissive zoning amendments are far more common.
- What distinguishes jurisdictions with enforceable net zero mechanisms is the willingness to attach financial consequences to non-compliance and to designate a specific agency responsible for enforcement—without both elements, targets remain aspirational.
- Municipal net zero legislation is concentrated in the building sector; transportation, embodied carbon, and industrial emissions remain less regulated at the city level.
- Legislative opposition to net zero has been formalized in at least one state legislature, and the data gaps for smaller, interior, and territorial jurisdictions are substantial enough to preclude comparative assessment.
1 Policy or Practice Recommendation
Policymakers may consider that the durability of net zero legislation appears correlated with the specificity of its enforcement architecture. Evidence suggests that statutes containing designated enforcement agencies, scheduled compliance deadlines, graduated penalty structures, and public reporting requirements are more likely to survive administrative transitions and produce measurable outcomes than resolutions or plans without statutory force. The experience of New York City, Seattle, and Vancouver offers a template, though the transferability of these models to jurisdictions with smaller fiscal bases and fewer regulatory personnel remains unestablished.
Citation List
Taoyuan City Government Environmental Protection Bureau, Taiwan, 2025. Taoyuan City Net Zero City Self-Government Ordinance passage. https://tydep.tycg.gov.tw/News_Content.aspx?n=20088&s=1349338&sms=19412
Florida Senate, United States, 2026. CS/SB 1628: Net-zero Policies by Governmental Entities. https://www.flsenate.gov/Session/Bill/2026/1628/?StartTab=BillHistory
Napa County Board of Supervisors, United States, 2026. Resolution in support of House Concurrent Resolution 46. https://napa.legistar.com/LegislationDetail.aspx?ID=8029449&GUID=80E09881-21F3-4F47-BB8A-8D3F6991A375
Herbert Smith Freehills Kramer (summarizing NYC Department of Buildings proposed rules), United States, 2025. Update on New York City Local Law 97. https://www.hsfkramer.com/pt_BR/insights/2023-09/update-on-new-york-city-local-law-97-proposed-rules-provide-building-owners-a-small-break
Los Angeles City Councilmember Nithya Raman, United States, 2024. Council Adopts Motion to Regulate Embodied Carbon. https://cd4.lacity.gov/press-releases/council-adopts-motion-to-regulate-embodied-carbon-in-the-city-of-los-angeles/
Illinois legislation summary via Daily Herald, United States, 2024. Legislation will help fight climate change (SB 3935, SB 3637, SB 3936). https://www.dailyherald.com/20241021/letters-to-the-editor/legislation-will-help-fight-climate-change/
San Francisco Office of the Mayor, United States, 2026. Mayor Lurie Releases Five-Year Update to Climate Action Plan. https://www.sf.gov/news-mayor-lurie-releases-five-year-update-to-climate-action-plan-and-celebrates-san-francisco-climate-week
Seattle Office of Sustainability and Environment, United States. Building Emissions Performance Standard. https://www.seattle.gov/environment/climate-change/buildings-and-energy/building-emissions-performance-standard
City of Toronto, Canada, 2026. Public Notice: Zoning By-law amendments for low-carbon technologies. https://secure.toronto.ca/nm/api/individual/notice/7454.do
City of Vancouver, Canada, 2024. Zero emissions buildings. https://vancouver.ca/green-vancouver/zero-emissions-buildings.aspx
Note on source verification: This report identified verifiable government and legislative sources documenting net zero legislative activity for New York City, Seattle, San Francisco, Los Angeles, Vancouver, Toronto, the State of Illinois, and the State of Florida within the 2016-2026 date range. For Chicago, the nearest available source is Illinois state-level legislation ; Chicago-specific municipal ordinances could not be verified. For Mexico City, Guadalajara, Monterrey, Puebla, Calgary, Edmonton, Winnipeg, Montreal, Anchorage, Honolulu, San Juan, Hagåtña, Charlotte Amalie, Birmingham, Oklahoma City, Tulsa, Phoenix, and Jacksonville, no verifiable university or government source documenting municipal net zero legislation was identified within the specified date range and source parameters. The Taoyuan City source is included as a relevant international comparison demonstrating the self-government ordinance model of net zero governance, though Taoyuan is not among the 25 specified locations. The Herbert Smith Freehills source is a law firm analysis rather than a primary government document; it is included because it contains detailed, date-specific summaries of NYC Department of Buildings proposed rules that could not be located in an alternative government-hosted source within research parameters. The Daily Herald source is a newspaper, not a government document or academic journal; it is included because it provides the only verifiable documentation of the three Illinois bills identified within the search parameters. These citation gaps constitute a finding: publicly accessible documentation of net zero legislative activity is heavily concentrated in a small number of jurisdictions.
5 Current Hashtags
