Customer Data:

Signed downtown customers

97

FY 2007 Energy Sales

35,652,212 ton-hours

Building Area Served:

Downtown

18.8 million sq. ft.

Chilled Water Sources:

Main plant, 76 West Kellogg Boulevard

Six electric chillers

12,737 tons

Two absorption chillers

1,000 tons

New Plant, 10th and Sibley

Two electric chiller

4,500 tons

Chilled water storage systems

10,800 tons

Satellite chillers

3,900 tons

Total

32,937 tons

Piping:

Type

steel pipe wrapped in protective coating with cathodic protection

Diameter

3-inch to 30-inch

Length

25,300 feet each, supply and return

Volume of distribution system

975,000 gallons

Volume of storage system

6,700,000 gallons

Operating Data:

Temperature

Supply

42 degrees F

Return

56 degrees F

Pressure

Supply

150 psi

Minimum pressure differential

15 psi

Reliability:

Reliability rate

99.99%