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Retro Commissioning

Improving Efficiencies in Building Management System Operation

This program is one of several innovative solutions offered by Energize Connecticut and administered by CL&P.

Low-Cost Operational Improvements to Your Building Management System Results In Real Energy Savings

The Retro Commissioning program (RCx) identifies energy savings in existing commercial and industrial buildings by improving the operation of a building’s management system (BMS). As your building ages and its occupants change, it is important to maintain your building’s control strategies and operating procedures. With malfunctioning and outdated control logic, a BMS often consumes more energy and operates at less than peak performance. This program will document how your facility should be operated to maximize energy-saving opportunities that improve your facility’s overall performance while helping to develop long-term, sustainable energy management strategies. Now, with Connecticut Energy Efficiency Fund support, you have the financial and technical assistance that enables you to determine your energy future by making decisions based on professional analysis and recommendations.

Who’s Eligible?

  • Customers with commercial buildings, municipal offices and schools
  • Buildings must be:
    • Prescreened;
    • Over 100,000 square feet
    • Have building energy management system with trending capability
    • Have a current ENERGY STAR® benchmark
  • CL&P customers on a commercial or industrial rate can participate in electric energy-efficiency measures.
  • CNG, SCG or Yankee Gas customers on a firm commercial or industrial rate can participate in natural gas energy-saving measures.

How Does the Program Work?

  • To deliver results, CL&P’s energy engineers will collaborate with you and a prequalified RCx engineering firm who will use targeted functional tests and BMS trend analysis to survey, investigate and provide recommendations for energy-efficiency (electric, gas and oil) improvements at your facility. Read more about the process  (PDF).
  • The program uses a financial incentive strategy. After the investigation is complete, the RCx engineering firm will provide a detailed implementation plan. The CL&P program administrator will then prepare an up-front, contractual commitment to be signed prior to implementing your RCx plan. The Letter of Agreement (LOA) will detail all the energy efficiency measures, the estimated energy savings, and the estimated incentive amount. The LOA must be signed by both parties prior to implementing your RCx project. Details of the current incentive structure can be found here (PDF).
  • Training sessions for building operators and facility managers are also part of the program to facilitate ongoing maintenance and ensure lasting improvements. The RCx program works with facility operators to establish clear documentation of the new control strategies while incorporating it into their existing maintenance procedures.
  • After the project is completed, the training is conducted, and the measures are verified, your organization receives the incentive payment. It’s as simple as that.

How Do I Apply?

Download an application (PDF). Please complete and mail or fax to the address show on the form.

The financial incentives will help get your project completed the right way, the first time. The energy-saving benefits will continue on, year after year. 

Start saving energy and money using your existing capital equipment. Examples of energy-efficiency opportunities open for discovery in your facility are:

  • Confirming the BMS operation sequence to meet current scheduling requirements
  • Optimizing of fresh air economizer operations
  • Optimizing of AHU supply fan static pressure
  • Using different lighting control schemes to maximize savings
  • Optimizing reheat and Variable Air Volume control sequences
  • Optimizing condenser water temperatures
  • Optimizing variable frequency drives for pumps and fans
  • Reviewing humidity set point ranges for data centers
  • Improving and validating demand-based ventilation systems
  • Automating resetting of chiller discharge temperature
  • Improving free-cooling control sequences
  • Identifying and eliminating simultaneous heating and cooling situations
  • Adding control schemes for electric unit heaters

For more information call your Account Executive or 1-877-WISE-USE (1-877-947-3873).