Corporate Energy Management Plan

Corporate Energy Management

Corporate 100% renewable energy

Where we’re going

The City of Guelph committed to converting to 100 per cent renewable energy at all City facilities, with council’s full support, by 2050. Here is where we are today:

2018 100RE Status

The City is currently using:

  • 23.6% renewable energy
  • 76.4% non-renewable energy

Out of the renewable energy portion:

  • 0.2% solar
  • 6.4% biofuel
  • 44% digester gas
  • 49.3% renewable electricity supplied by the grid

2018 total corporate energy consumption

The City’s 2018 Total Corporate Energy Consumption was 157,879,846 kilowatt hours of electricity. This equates to 1,130 kilowatt hours of electricity per employee.

  • Vehicles (propane): 0.1%
  • Facilities (propane): 0.1%
  • Facilities (district energy): 1.4%
  • Vehicles (gasoline): 5%
  • Facilities (digester gas): 10.4%
  • Facilities (natural gas): 21.3%
  • Vehicles (diesel): 25.7%
  • Facilities (electricity): 35.9%

2018 greenhouse gas emissions

The City’s 2018 Greenhouse Gas Emissions were 12,467,929 kilograms carbon dioxide equivalent.

  • 51 per cent (12,467,929 kilograms carbon dioxide equivalent) coming from the City’s fleet
  • 49 per cent (11,890,512 kilograms carbon dioxide equivalent) coming from City facilities

Total greenhouse gas emissions per employee was 178 kilograms carbon dioxide equivalent.

What we’ve done

East Parkade LED lighting retrofit

All lights in the parking area and stairwells were replaced with vandal resistant energy-efficient LED lights. This improves light quality, reduces maintenance costs and saves energy.

Electricity savings 142,000 kWh/yr
Greenhouse gas emissions reduction 2,840 kgC02e/yr
Project cost $150,000

Waterworks electrical room cooling right-sizing

Cooling is needed for electrical equipment to function safely. The old oversized cooling system was replaced with right-sized modular equipment that can provide the appropriate level of cooling as weather effects and equipment usage change.

Electricity savings 28,000 kWh/yr
Greenhouse gas emissions reduction 560 kgC02e/yr
Project cost $21,000

Victoria Road Recreation Centre ice plant controller

An ice plant control system was installed to optimize cooling tower and compressor quality.

Electricity savings 201,000 kWh/yr
Greenhouse gas emissions reduction 4,020 kgC02e/yr
Project cost $29,000

Norm Jary splash pad variable speed drive pump

Pump was right-sized and variable speed drive was installed to allow for better pump control. This reduces water and energy use.

Electricity savings 4,000 kWh/yr
Water savings 3,680 m3/yr
Greenhouse gas emissions reduction 80 kgC02e/yr
Project cost $39,000

City Hall parking, exterior and stairwell LED lighting retrofit

LED lighting retrofit with controls to improve lighting conditions and automatic turn off and dimming based on occupancy.

Electricity savings 62,000 kWh/yr
Greenhouse gas emissions reduction 1,240 kgC02e/yr
Project cost $42,000

Farmer’s Market LED lighting retrofit and destratification fans

Five destratification fans installed to improve air movement and thermal comfort. All lights have been upgraded to LED.

Electricity savings 13,000 kWh/yr
Natural gas savings 1,300 m3/yr
Greenhouse gas emissions reduction 2,714 kgC02e/yr
Project cost $28,000

Fire Hall #4 water heater upgrade

The old inefficient draft appliance water heater was replaced with a high-efficient condensing unit that recovers exhaust heat to preheat water.

Natural gas savings 10,000 m3/yr
Greenhouse gas emissions reduction 18,880 kgC02e/yr
Project cost $5,000

Burke well variable speed drive pumps

The well pump and booster pump were upgraded with variable speed drives for enhanced controls and more efficient pumping.

Electricity savings 111,000 kWh/yr
Greenhouse gas emissions reduction 2,220 kgC02e/yr
Project cost $30,000

What we’re planning

LED streetlights and controls

Nearly 13,000 non-decorative streetlights are to be upgraded to LED with network controls. This will improve light quality and reduce operating and maintenance costs.

Electricity savings 9,465,000 kWh/yr
Greenhouse gas emissions reduction 189,300 kgC02e/yr
Project cost $8,000,000

Victoria Road Recreation Centre cold water ice flooding

Traditionally water is heated to remove air bubbles before flooding and resurfacing ice. An engineered device is to be installed to remove air bubbles using fluid dynamics. This will improve ice quality and reduce the need to heat water for flooding.

Electricity savings 44,000 kWh/yr
Natural gas savings 6,500 m3/yr
Greenhouse gas emissions reduction 13,152 kgC02e/yr
Project cost $40,000

West End Community Centre cooling tower replacement with variable speed drive

The existing cooling tower is at the end of its useful life and is to be replaced with an energy efficient unit equipped with a variable speed drive.

Electricity savings 19,500 kWh/yr
Greenhouse gas emissions reduction 390 kgC02e/yr
Project cost $30,000

West End Community Centre pool drain heat recovery

A control system will be installed to optimize pool water drainage rates and recover waste heat from drained pool water to preheat fresh pool water.

Natural gas savings 9,000 m3/yr
Water savings 1,460 m3/yr
Greenhouse gas emissions reduction 16,992 kgC02e/yr
Project cost $30,000

Zero emissions electric ice resurfacers

Two propane fueled ice resurfacers are being replaced with battery electric models. This will improve indoor air quality by eliminating indoor exhaust and reduce fuel costs and building ventilation requirements.

Natural gas savings 11,000 m3/yr
Other fuel savings 1,460 L/yr propane
Greenhouse gas emissions reduction 25,876 kgC02e/yr
Project cost $100,000

Wastewater treatment plant aeration upgrade detailed design

Detailed design is to be done for the aeration blower upgrades. The upgrades will improve control of air supplied to the treatment process and significantly reduce energy demand by 6,750,000 kWh/yr at the Wastewater Treatment Plant.

For more information

For more information about this report or about the City’s 100 per cent renewable energy goal contact:

Bryan Ho-Yan, Program Manager, Corporate Energy
Facilities Management
519-822-1260 extension 5672
bryan.ho-yan@guelph.ca