Website: https://nashvilledistrictenergy.com/
The Metro Nashville District Energy System (MNDES) is a centralized heating and cooling utility serving downtown Nashville, Tennessee. The system distributes steam and chilled water from a central plant to connected buildings, which the operator describes as efficient, economical, dependable, and environmentally friendly heating and cooling. By generating heating and cooling at one location and delivering it through an underground network, the system lets connected buildings avoid installing and maintaining their own boilers, chillers, and cooling towers. The energy generating facility is located at 90 Peabody Street, and the network covers downtown Nashville along with the SoBro and Rolling Mill Hill areas.
Services
The system provides centralized steam and chilled water service for space heating and air conditioning. Buildings connect through four pipes: chilled water supply and return lines, and high-pressure steam supply and condensate return lines. Chilled water is delivered at roughly 40 to 42 degrees Fahrenheit and returns at about 55 degrees for air conditioning, while high-pressure steam is used for space heating, domestic water heating, and kitchen and laundry applications. Some customers use decoupled systems in which chilled water passes through heat exchangers rather than circulating directly through building equipment, allowing customized integration. The organization also supports project planning, customer support, and ongoing maintenance services.
About
The award-winning system began operations in 1974 and celebrated 50 years of operation in 2025. It currently serves more than 40 major downtown customers and reports having maintained 99.99 percent system reliability since 2005. According to the site, the system serves 42 downtown buildings and over 10,730,000 square feet of space, with notable customers including office buildings, hotels, Nissan Stadium, Bridgestone Arena, the Ryman, the Music City Center, and Hyatt Place Nashville Downtown. The system is operated by Constellation New Energy, and Thermal Engineering Group, Inc. serves as the project administrator. The operator states that the network offers a more favorable carbon footprint than traditional stand-alone heating and cooling methods.
Location & Contact
The energy generating facility is located at 90 Peabody Street in downtown Nashville, Tennessee. The system can be reached by phone at 615-264-2611 and by email at [email protected]. Prospective customers interested in connecting can contact Daniel P. Coyle at [email protected], and a free consultation is offered through the website.
Additional Information
The system targets buildings that are new construction, undergoing renovation, or replacing existing heating and cooling equipment, and it notes available capacity of 2,055 tons of cooling and 21,750 pounds per hour of steam for new contracts. Stated benefits include lower upfront capital expense, reduced interior space requirements, competitive operating rates, and enhanced reliability. The website also provides a savings calculator, technical resources, customer profiles, a gallery, and a distribution-system map so prospective customers can check eligibility based on proximity to the existing infrastructure.
Profile compiled from the company’s official website (nashvilledistrictenergy.com).