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RTEM Knowledge Center


Want to learn more about how a Real Time Energy Management (RTEM) system works—and how to make sure you get the most out of the investment? NYSERDA has developed multiple resources to help you better understand these smart building technologies.

RTEM Buying Guide

The RTEM Buying Guide provides a comprehensive overview of how a RTEM systems works, its benefits, how to determine the appropriate systems and services for your building, and more.

RTEM Project Dashboard

Learn more about RTEM projects throughout New York State.

RTEM Frequently Asked Questions

Have questions? We’ve compiled answers to some of the most commonly asked questions about RTEM systems below. If you have others, don’t hesitate to reach out to us.


How long does a RTEM system installation take?

The duration of a RTEM system installation is unique to each project/system and should be discussed with your RTEM vendor. While the duration is site specific, they typically average between three to six months. Key factors of the installation duration include:

  • Project scope
  • Site access
  • Access to the building’s network infrastructure and equipment integration protocols
  • Coordination and communication with your qualified RTEM vendor

All projects submitted to the NYSERDA RTEM program must be installed and commissioned within six months of project approval.

What do I need to have in place for a RTEM system?

If you have a building management system (BMS) that is in need of an upgrade or replacement, this is a great time to consider upgrading to a RTEM system. RTEM solutions are also available to buildings that do not currently have a BMS.

How often does a RTEM system need to be updated?

RTEM systems do not require any manual updates. Since they are cloud-based, these systems are automatically and continuously updated. This ensures you are using the latest software, without your employees having to manually keep it up-to-date.  

What is the average useful life of a RTEM system?

The average useful life of a RTEM system is around 16 years.

How much can I save with a RTEM system?

Typically, businesses can save up to 10 percent to 20 percent a year on energy costs. Energy savings depend on baseline energy consumption, fuel type, existing site conditions, building type and use, and occupancy rates.