Condominium Case Study

Condominium, Toronto, Canada


Condominium’s are notorious for using large amounts of power. The grid purchasing costs consist of energy charging and demand charging. The energy rate varies with the time period like On-peak and Off-peak, which is a set fee paid monthly or seasonally. Most customers pay for the energy they use (measured in kWh). Larger users of electricity are also charged for demand (measured as kW).


In this condominium case study, a Battery Energy Storage System will be beneficial to support grid power supply. We can shave the power from the grid at the peak period and use the power from BESS to fill the power gaps, a large amount saving of the demand charge will be caused

Cost Saving Benefits

The capital cost of system considered here is $600/kWh. The maximum demand shaving of the BESS during the peak period of 19~20 is around 80kW. With an annual energy cost of $9698, and an annual demand charge is $40,706, the payback period would be just over 5 years.

Energy Cost demand total energy cost payback
5.1 years

Cost Saving Benefits

The system comprises of a 100 kW/150 kWh BESS for the grid. This setup will be able to support power demands of residents during peak periods using the energy stored. Since the BESS is charged during off-peak period with the grid, significant amount of bill savings can be made in this condominium as well as other buildings.

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