Constellation Energy to provide load response to 250 Marriott properties

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Baltimore, Nov. 16, 2011 — Constellation Energy and Marriott International will develop more than 23 MW of load response capability across more than 250 Marriott-managed hotel properties in the mid-Atlantic, New England, New York, Texas and California.

Load response is the reduction of electrical consumption in response to high wholesale electricity prices, system resource capacity needs or system reliability events.

Constellation‘s load response program is designed to improve energy efficiency and reduce electricity costs at Marriott properties, while ensuring guest comfort through expanded building automation capability and customized load curtailment strategies.

As part of the agreement, Marriott will leverage Constellation Energy’s VirtuWatt energy management system in concert with existing building automation to track electricity usage, bid directly into demand response markets and automate load curtailment strategies.

Marriott properties may elect to receive financing through Constellation Energy’s load response program to defray the upfront cost of demand response related equipment upgrades, as well as take advantage of load-based utility incentives in markets where available.

In 2010, Constellation Energy and Marriott conducted a load response analysis and pilot at 17 Marriott properties, which identified technology requirements and laid the groundwork for this national scope load response program.

Through a partnership with Automated Logic Corporation, Constellation Energy will implement indirect load control at Marriott properties where ALC systems are installed. Constellation Energy’s VirtuWatt platform will enable Marriott properties with other brands of automation to implement pre-set curtailment scenarios for building systems such as generation, pumping and HVAC, based on load shortages, electricity usage or real-time pricing.

VirtuWatt also provides Marriott International with a centralized system for load control at multiple sites, an enterprise-view of electricity usage and data grouped by independent system operator or regional transmission organizations.

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