Archive - Law-87

What does a retro-commissioning study accomplish?

Through analysis, corrections and testing, a retro-commissioning study certifies that all systems and operations are running efficiently.

What is retro-commissioning?

Retro-commissioning is a systematic process for optimizing the energy efficiency of existing base building systems by identifying and correcting deficiencies in these systems. This includes, but is not limited to, repairs of defects, cleaning, adjustments of valves, sensors, controls or programmed settings, and/or changes in operational  practices.

When is my building due to comply with LL87?

Energy Efficiency Reports are due in the calendar year with a final digit that is the same as the last digit of the building’s tax block number: Last digit of tax block number 0 1 2 3 4 5 6 7 8 9 Year first EER is due 2020 2021 2022 2013 2014 2015 2016 […]

Which buildings must comply with LL87?

The law requires compliance from buildings exceeding 50,000 gross square feet, or two or more buildings that together exceed 100,000 square feet and share a tax lot or are held by the same condominium ownership.

What does an energy audit accomplish?

The audit process identifies, at a minimum: All reasonable measures, including capital improvements, that could reduce energy use and/or the cost of building operations For each measure, the associated annual energy savings, the cost to implement, and the return on investment The building’s benchmarking output consistent with the EPA’s Portfolio Manager tool A breakdown of […]

What are ‘base building systems’?

Base building systems are the systems or subsystems of a building that use energy and/or impact energy consumption including: Building envelopes HVAC (heating ventilating and air conditioning) systems Conveying systems Domestic hot water systems Electrical and lighting systems

What is an energy audit?

An energy audit is a systematic process of identifying and developing modifications and improvements of the base building systems. These include, but are not limited to, alterations of these systems and the installation of new equipment, insulation or other generally recognized energy efficiency technologies to optimize the building’s energy performance and achieve energy savings.