LL97 Carbon Penalty Calculator
Estimate your building's emissions penalties under NYC Local Law 97
Local Law 97 is part of NYC's Climate Mobilization Act. It sets greenhouse gas emissions limits for buildings over 25,000 square feet, with penalties for exceeding those limits.
The law operates in two phases: 2024-2029 with initial limits, and 2030+ with significantly stricter limits. Buildings that exceed their limits face penalties of $268 per metric ton of CO2e over the limit, assessed annually.
Annual Energy Consumption
Found on your Con Edison bill or LL84 benchmarking report
Found on your National Grid or Con Edison gas bill
Check your fuel oil delivery receipts or vendor records
Found on your Con Edison steam bill
- Conduct an energy audit to identify the most impactful reduction measures
- Upgrade lighting to LED and install smart building controls
- Consider electrification of heating systems to reduce fossil fuel use
- Benchmark your building annually via LL84 to track progress
- Explore NYSERDA and utility incentive programs for efficiency upgrades
Disclaimer: This calculator provides estimates only. Actual compliance determination requires official benchmarking data submitted through EPA Portfolio Manager. Emissions factors and limits based on NYC Local Law 97 guidelines. Penalty rate: $268 per metric ton of CO2e over the limit. Energy data auto-populated from NYC LL84 benchmarking disclosures where available. Consult with a qualified professional for official compliance assessment.