Summary review of building energy-use compilation and analysis (BECA). Part C. Conservation progress in retrofitted commercial buildings

Technical Report · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:6543068

Wall, L W; Flaherty, J

Data on actual energy use were compiled for 223 retrofitted commercial buildings and analyzed for energy performance and cost-effectiveness. 70% of the buildings were located in the northeastern region of the US. Dominant building types were schools and offices; over 75% of the buildings had floor areas larger than 50,000 ft/sup 2/. Nearly all (95%) of the buildings included operations and maintenance changes as part of the retrofit. The median value of source energy savings for the entire sample was 19% of the pre-retrofit consumption. Nine percent of the retrofits failed to save. The median value of retrofit cost was $0.56/ft/sup 2/. Complete cost data were available for less than 30% of the sample; for them the median value of simple payback time was in the 1 to 2 year range and the median value of cost of conserved site energy was $3.30/MBtu (with first-costs amortized over 5 years at 10% real interest). Also included are a study of the durability of retrofits and a comparison of predicted vs. actual savings.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6543068
• Report Number(s): LBL-15375; CONF-820849-18; ON: DE83005999
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
291000 -- Energy Planning & Policy-- Conservation
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
BUILDINGS
COMMERCIAL BUILDINGS
COST
DATA
DATA COMPILATION
EDUCATIONAL FACILITIES
ENERGY CONSERVATION
ENERGY CONSUMPTION
FUEL CONSUMPTION
INFORMATION
MAINTENANCE
NUMERICAL DATA
OFFICE BUILDINGS
OPERATION
PAYBACK PERIOD
PERFORMANCE
POWER DEMAND
RETROFITTING
SCHOOL BUILDINGS