State of North Carolina: University of North Carolina Wilmington Performance Contract #2

Background

The University of North Carolina at Wilmington (UNCW) partnered with the energy service company Ameresco to conduct an investment-grade audit of campus facilities that identified potential energy efficiency measures (EEMs). Twenty-four EEMs were selected and are under consideration to be implemented between 2012 and 2013.

This project is the second performance contract for UNCW and focuses on the remaining large, general- funded buildings not included in the first contract. The campus facilities addressed include classroom/office space, research, teaching and necropsy labs, an animal holding facility, a coliseum, a natatorium and others. These government-owned buildings are funded through State appropriations.

Solutions

UNCW established a performance contract valued at around $14M and lasting 18 years. In accordance with industry standards, this performance contract will leverage EEMs with quick payback periods, like lighting projects, in order to fund other projects with longer payback periods such as infrastructure expansion and replacing large equipment like air handling units, chillers and boilers.

The following is a list of EEMs, with their costs and estimated savings figures that are under consideration to implemented as part of the project:

Lighting system improvements: Cost $343,447, Savings $99,831
Lighting controls: Cost $48,553, Savings $3,331
Tridium controls upgrade/occupancy sensors: Cost $1,724,112, Savings $169,597
Meters/monitoring & reporting upgrades: Cost $329,270, Savings $63,148
Expand campus centralized utilities and tie in: Cost $2,429,839, Savings $107,609
Install demonstration active chilled beam system: Cost $190,690
Install variable speed compressor mini Dx system: Cost $122,587, Savings $2,545
Boiler room piping modifications: Cost $5,295, Savings $376
Chiller replacement: Cost $240,384, Savings $14,936
Boiler replacement: Cost $175,470, Savings $1,046
Fume hood conversions to low flow: Cost $61,981, Savings $40,120
HVAC upgrades: Cost $342,791, Savings $21,866
Air handling unit condensate recovery/repair: Cost $3,046, Savings $4,323
Replace/repair natatorium HVAC unit: Cost $24,864, Savings $3,846
Installation of condensing domestic hot water heaters: Cost $55,811, Savings $15,471
Commission building: Cost $31,455; Savings $21,780
Pool heating: Cost $89,494, Savings $16,423
Replace steam system trask complex: Cost $478,212, Savings $8,419
Co-Gen/Tri-Gen installation: Cost $446,409, Savings $40,965
Window replacement: Cost $112,024, Savings $598
Vending and ice machine controls: Cost $15,495, Savings $2,348
Cooling tower wells: Cost $248,033, Savings $50,543
Solar pool heating system: Cost $234,858, Savings $13,102
Campus-wide lighting: Cost $961,218, Savings $66,268

Not every ECM is being implemented in each building

ANNUAL ENERGY USE

(Source EUI)

ANNUAL ENERGY COST

ANNUAL WATER USE

ANNUAL WATER COST

ANNUAL PLANT ELECTRICITY USE

ANNUAL PLANT ELECTRICITY COST

IN BUILDING ENERGY USE

IN BUILDING ENERGY COST

ACROSS NETWORK USE

ACROSS NETWORK COST

ANNUAL EMISSIONS

USE

COST

Aerial photo of the campus

UNCW campus map

State of North Carolina: University of North Carolina Wilmington Performance Contract #2

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Aerial photo of the campus

UNCW campus map