Sample Projects

Description

• Metal products manufacturer (Rate M)
• Consumption: 1,096,333 kWh/year

Planned electricity-saving measures

• Replace an outdated 400-hp modulating compressor by a new 300-hp compressor with a variable speed drive (VSD)
• Plug leaks and eliminate inefficient use of compressed air

Savings and financial assistance

• Total electricity savings: 505,410 kWh/year
• Eligible electricity savings: 176,510 kWh/year or $28,813
• Financial assistance: $26,477  

Description

Existing scenario: an efficient refrigeration process with a maintenance temperature of -15.6°C (4°F) that uses two identical 140.6 bhp rotary screw compressors running on R-717 and an evaporative condenser sized for 35°C (95°F)

Planned electricity-saving measures

• Replace liquid injection cooling of the two rotary screw compressors by thermosiphon cooling.
• Lower condensation temperature to 29.4°C (85°F).
• Replace evaporative condenser operating at a saturated condensation temperature of 35°C (95 °F) by a new condenser operating at a condensation temperature of 29.4°C (85°F) and install a variable speed drive (VSD) on the fan motor.
• Install a VSD on the 125-hp pump of a secondary circuit.

Savings and financial assistance

• Total electricity savings: 314,020 kWh/year (24.9%)  
• Eligible electricity saving: 314,020 kWh/year or (24.9%)
• Financial assistance: $47,103

Description

• Existing plant: 5,600-m²
• Hours of operation: 4,680 per year

Planned electricity-saving measures

• Overhaul lighting system but maintain the same lighting level
• Before: five hundred 400-W pulse-start metal halide fixtures (or 463 W with ballast)
• After: five hundred 240-W T5 HO (four 4-ft lamps) equipped with specular reflectors

Savings and financial assistance

• Total electricity savings: $568,620 kWh or $35,016 per year
• Eligible electricity savings : 568 620 kWh or $35,016 per year
• Financial assistance: $85,293

Description

• Municipal pumping plant (Rate G)
• Consumption: 627,333 kWh/year

Planned electricity-saving measures

• Replace two outdated 60-hp pumps by two new pumps, one with a variable speed drive (VSD)

Savings and financial assistance

• Total electricity savings: 171,730 kWh/year or $9,127
• Eligible electricity savings: 152,910 kWh/year or $8,186
• Total eligible costs: $68,000  
• Financial assistance: $22,937