Case Study: Green Acres Apartments
Green Acres is a 50 unit -apartment complex owned by the Public Housing Authority in Barre, Vermont. Due to the high costs of electricity in the 1980s and the subsequent vacancies resulting from $200-$300 per month electric bills, the housing authority converted the electric baseboard heating system to a central woodchip-fired heating plant, with an oil boiler backup.
In 1999, the approximate monthly heating and hot water cost per residence was $24.
- .65 Megawatt wood fired boiler
- Sloping-grate combustor
- Below ground fuel bin
- In floor auger (to feed combustor)
- Underground hot water heat distribution lines run to eight buildings
- Backup oil-fired boiler
Cost of System
- Installation cost $1.04 million
- Annual Operation and Maintenance Cost
- Maintenance cost $800
- Wood fuel cost $13,298