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Combined Solar PV System

with Energy Storage and Late-Night Recharging at 2.4 cents/kWh in Ontario

by Paul Stevers�Integrated ClimateTech (iClimateTech)�April 16, 2023

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Electric Grid

Solar System

Power Management System Including Energy Storage

Simplified Schematic of a Combined Solar PV System �with Energy Storage and Late-Night Recharging at 2.4 cents/kWh in Ontario

Power from grid at $0.024/kWh between 11 pm and 7 am

Home or Business Electrical System

Power to Home �or Business

Shown here is a simplified schematic of a facility that generates reliable power while creating negative carbon emissions at the same time. This is accomplished by combining a fossil fuel power plant with renewable energy farms, energy storage and direct air capture (DAC). By combining these technologies in this way, companies can significantly lower their costs and provide reliable power to their customers. This DAC is very useful in this regard since the power it consumes can be reduced if needed. For example, if the generated renewable energy substantially declines for a few days and there is no longer enough stored energy available, power to the DAC can be reduced or stopped. Typically, renewable energy will be available most of the year, Therefore, the DAC system can be expected to operate most of the time and enable this facility to generate substantial carbon emissions.

A very important feature of this configuration of technologies is that it is not dependent on any one technology. There are now multiple options for each technologies area. As a result, companies that want to implement this combination of technologies have many choices and can and should choose their best options.

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11pm

7am

10am

4pm

7pm

11pm

100%

0%

50 %

75%

25%

Illustration of Battery Charging Cycle in a Combined Solar PV System �with Energy Storage and Late-Night Recharging at 2.4 cents/kWh in Ontario

Battery is charged and discharged twice a day to maximize value of energy storage system

Charging Battery from Grid at 2.4 cents/kWh

Charging battery from Solar System

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Estimated Savings on Hydro Bill based on Calculator Webpage by Ontario Energy Board for: Hydro One Networks Inc. - General Service Energy Billed

Ontario Energy Board: Hydro One Networks Inc. - General Service Energy Billed

Before Installation: Typical Hydro Bill Estimate at 2,500 KWh per Month.
After Installation: Hydro Bill Estimate with Energy Storage & Solar - 1,250 KWh per Month.
Savings: Time of Use Billing at 2,500 KWh - Ultra-low overnight rate with energy storage and solar = $526.30 - $184.64 = $341.66.

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Ontario Energy Board: Hydro One Networks Inc. - General Service Energy Billed

Typical Hydro Bill Estimate at 2,500 KWh per Month

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Ontario Energy Board: Hydro One Networks Inc. - General Service Energy Billed

Comparing Hydro Bill without and With Solar and Overnight Charging

Original Hydro Bill with 3 different billing structures for 2,500 kWh/mo.

Solar and Overnight Battery Charging of 1,250 kWh/mo.

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Cost Estimate for Project:

Energy Storage System with Inverter Charger _______
Solar System __________

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Appendix

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Ontario Energy Board: Hydro One Networks Inc. - General Service Energy Billed

Hydro Bill Estimate with Energy Storage & Solar - 1,250 KWh per Month