WARREN – For more than a century steam has been flowing beneath the streets of Detroit ? as it has many other cities (albeit more recently) including Washington D.C., New York, Boston and others. Steam or chilled water or some other heat transfer system has been saving building owners the added expense of having their own boilers or chillers to heat or cool their buildings. In many cases, such as in Washington, taxpayers own those buildings.

This kind of sustainable energy system is called ?district energy? as it provides its services to buildings within a specifically defined physical area.

In the case of Detroit that area includes another specifically defined physical area ? the Detroit Entertainment District. There you?ll find Ford Field, the domed home of the Detroit Lions, the Gem Theatre, the Detroit Opera House and a host of classic buildings once called the ?lost buildings of Detroit? that are being renovated for tenants ready ? and waiting ? to move in.

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