{"id":3498,"date":"2025-08-01T05:14:09","date_gmt":"2025-08-01T05:14:09","guid":{"rendered":"https:\/\/www.thecotocongroup.com\/?p=3498"},"modified":"2026-02-03T09:09:39","modified_gmt":"2026-02-03T09:09:39","slug":"improve-energy-efficiency-in-your-commercial-building-in-nyc","status":"publish","type":"post","link":"https:\/\/thecotocongroup.com\/blog\/improve-energy-efficiency-in-your-commercial-building-in-nyc\/","title":{"rendered":"5 Simple Ways to Improve Energy Efficiency in Your Commercial Building in NYC"},"content":{"rendered":"

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<\/span>LL84 & LL97 Made Simple: Your 2025 Guide to Energy Benchmarking and Carbon Emissions Limits<\/span><\/h3>\n

 <\/p>\n

New York City is serious about slashing greenhouse gas emissions \u2014 and if you own or manage a large building, Local Law 84 (LL84) and Local Law 97 (LL97) are front and center in that effort. These two laws work together to track, report, and reduce the energy use and carbon emissions of the city\u2019s biggest properties.<\/span><\/p>\n

In this guide, you\u2019ll learn exactly what LL84 and LL97 require in 2025, why they matter, and how to stay compliant without losing sleep over deadlines.<\/span><\/p>\n

<\/span>What is Local Law 84?<\/b><\/span><\/h4>\n

LL84, part of NYC\u2019s Greener, Greater Buildings Plan, requires most buildings 25,000 sq. ft. and up to report annual energy and water usage through ENERGY STAR Portfolio Manager.<\/span><\/p>\n

2025 Key Facts:<\/b><\/p>\n

    \n
  • Report for 2024 usage by:<\/b> May 1, 2025<\/span><\/li>\n
  • Grace period:<\/b> Until June 30, 2025 (no fines)<\/span><\/li>\n
  • Extension (if linked to LL97 filing):<\/b> Until December 31, 2025<\/span><\/li>\n
  • Certification:<\/b> Must be reviewed and signed by a Registered Design Professional (RDP)<\/span><\/li>\n
  • Penalties:<\/b> $500 per quarter, up to $2,000\/year per building<\/span><\/li>\n<\/ul>\n

    <\/span>Why LL84 Matters<\/b><\/span><\/h4>\n
      \n
    • Creates the baseline data LL97 uses to set carbon limits<\/span><\/li>\n
    • Makes building performance transparent to buyers, tenants, and investors<\/span><\/li>\n
    • Pinpoints waste so you can plan upgrades that cut costs<\/span><\/li>\n
    • Is a prerequisite for LL97 compliance<\/span><\/li>\n<\/ul>\n

      <\/span>What is LL97?<\/b><\/span><\/h4>\n

      Passed in 2019, LL97 sets carbon caps for large buildings starting in 2024. Miss the limit, and you\u2019ll pay $268 per metric ton over.<\/span><\/p>\n

      2025 Key Facts:<\/b><\/p>\n

        \n
      • First emissions report due <\/span>May 1, 2025<\/b><\/li>\n
      • Applies to most buildings over 25,000 sq. ft.<\/span><\/li>\n
      • Carbon limits vary by occupancy type and get stricter over time<\/span><\/li>\n
      • Reports must be signed by an RDP and filed in the BEAM Portal<\/span><\/li>\n<\/ul>\n

        <\/span>How LL84 and LL97 Work Together<\/b><\/span><\/h4>\n

        Think of LL84 as the measuring stick and LL97 as the target. LL84 shows where your building stands; LL97 tells you how far you have to go. Aligning both reports saves time and reduces mistakes.<\/span><\/p>\n

        <\/span>Challenges to Expect<\/b><\/span><\/h5>\n
          \n
        • Gathering accurate data from older systems<\/span><\/li>\n
        • Integrating utility data into Portfolio Manager<\/span><\/li>\n
        • Scheduling RDP reviews in time<\/span><\/li>\n
        • Staying on top of multiple deadlines<\/span><\/li>\n<\/ul>\n
          <\/span>Benefits of Compliance<\/b><\/span><\/h5>\n