New York City Local Law 87

Energy Audits and Retro-Commissioning for Building Owners and Managers

As part of New York City’s Greener, Greater Buildings Plan (GGBP), Local Law 87 (LL87) mandates Energy Audits and Retro-Commissioning every ten years for all buildings over 50,000 square feet. LL87 provides building owners and managers insight into energy consumption and building performance with the goal of improving sustainability and decreasing energy waste.


Step 1: Energy Audit

A Partner Energy engineer will collect building energy data and catalog baseline HVAC systems, lighting and envelope conditions. The auditor will then identify capital improvements and/or system replacements that will save energy, along with measure-specific installation costs and energy cost savings. Typical measures include:

  • Lighting upgrade (e.g. fluorescent to LED)
  • Boiler replacement
  • Roof insulation


Step 2: Retro-Commissioning

A Partner Energy retro-commissioning agent will identify opportunities for tuning and repairing infrastructure that affect the building energy use. The City prescribes Retro-commissioning focus areas, which generally consist of low-cost measures such as:

  • Optimizing HVAC controls
  • Testing, sealing, and balancing ventilation systems
  • Ensuring or installing adequate pipe insulation

Building owners must implement corrections identified in the Retro-Commissioning study. These low cost modifications often result in significant savings with quick paybacks. Partner Energy has extensive experience working with property management staff to implement fixes, which improves performance and extends the useful life of existing systems.

The Energy Audit report identifies significant capital improvements and/or base system replacements if needed. However, the building owner does not have to act on improvements identified in the Energy Audit report.


Step 3: Energy Efficiency Reports

In the final step of LL87 compliance, Partner Energy finalizes and submits the Energy Audit and Retro-Commissioning reports to the NYC Department of Buildings to attain compliance.


When do I have to comply?

Buildings must comply with LL87 every ten years based on its Borough, Block and Lot number. The last number of the tax lot number is the compliance year. (e.g. if the building’s Block number is 01228, compliance forms must be submitted in 2018, 20128, etc.)

Forms are due by December 31st of the compliance year.


What is the penalty for non-compliance?

Non-compliance results in a $3000 fine issued for the first year and a $5000 fine for every subsequent year. LL87 Reports will only be accepted once all fines have been paid in full.


Partner Energy helps building owners and managers to identify, capitalize and implement accretive energy efficiency, renewable energy and sustainability projects nationwide. For more information about Partner Energy’s services, please contact the sales team at (888) 826-1216 or via email at

Partner Energy Opens Newark, NJ Office

Newark office will provide on-the-ground support for New York and New Jersey clients and expand ability to meet the increasing demand for energy efficiency and sustainability services.

NEWARK, N.J. – April 6, 2018 – Partner Energy, a nationwide provider of energy efficiency engineering and sustainability consulting services, has opened a new office in Newark, New Jersey. Located on the 19th floor of One Newark Center, their local team is minutes away from New York City and the greater metropolitan area.

With its headquarters in Los Angeles and an expanded East Coast presence, Partner Energy is well positioned to offer a wide array of energy efficiency and sustainability solutions nationwide.

“Demand for energy efficiency engineering and sustainability consulting services has substantially increased in the New York and New Jersey area because of the prominence of real estate loan programs offered by HUD, Fannie Mae, Freddie Mac, low income tax credits and municipal requirements for energy audits and benchmarking. Partner Energy expanded our presence in the New York and New Jersey area to better support our clients and the local market,”


Tony Liou, President of Partner Energy.

Partner Energy works with building owners and managers to identify, capitalize and implement accretive energy efficiency, renewable energy and sustainability projects, including:

  • Regulatory Compliance (LL84, LL87 and NYC Energy Code)
  • Energy Audits
  • Feasibility Studies
  • Commissioning
  • Retro-Commissioning
  • Green Building Certifications (e.g. LEED and Energy Star)
  • Affordable Housing Sustainability Requirements (e.g. the new Integrated Physical Needs Assessment (IPNA) protocol)

For more information about Partner Energy’s services, please contact the sales team at (888) 826-1216 or via email at

NYC skyline view from Partner Energy's office

Pictured: NYC skyline view from Partner Energy’s office (courtesy of Kurt D’Angelo, Partner Energy)

Tackling Energy Efficiency Regulations

In his article, Tackling Energy Efficiency Regulations, Partner Energy President, Tony Liou, discusses the range of government incentives that are projected to encourage the public to curb their energy consumption and simultaneously reduce greenhouse gas emissions. Additionally, Mr. Liou outlines the intricacies of Energy Efficiency Rating Disclosure, current energy legislation, energy efficiency project implementation and how the public/ real estate industry can benefit from government rebates and energy efficiency tax incentives. Read more here.