A Montana brewery could save more than $4,000 each year on energy costs by implementing the recommendations of a Montana Resource Efficiency Program (MREP) audit.
Draught Works is a brewery in Missoula, Montana, that resides within a historic brick building built in 1931. The building contains one large room that consists of a taproom and brewery, located on opposite ends of the building. The Montana Resource Efficiency Program (MREP) conducted a detailed audit that focused on energy and water conservation, renewable energy, and operational improvements.
Current heating and cooling equipment includes a geothermal heat pump system (including well pump and circulation pumps). There are also two unit heaters. Ventilation is provided by two heat-recovery ventilators. Domestic hot water is provided by a high-efficiency instantaneous unit to sinks and a dishwasher. There is a 24′ x 24′ cooler inside the building and another refrigeration system for the beer-dispensing lines. The brewery upgraded its lighting LED in 2016.
Audit recommendations include installation of occupancy sensors, ECM motors (brushless, permanent magnet motor integrated with an electronic control module), walk-in cooler evaporator fans, compressed-air system testing and maintenance, and installation of heat recovery-glycol chillers.
The economics associated with the energy-conservation project are summarized below:
- Total gross project cost: $8,525
- Total annual cost savings: $4,282.5
- Total utility incentive: $2,103
- Net cost: $6,421
- Annual energy savings: 7,406 KWh and 5,030 therms
- Simple payback with energy savings: 1.5 years