Clear answer, explained.
Battery storage does not automatically create a strong investment simply because a facility consumes a large amount of electricity.
The financial case depends heavily on when electricity is consumed, how the facility is billed, the size and duration of demand peaks, how frequently the battery will cycle, available incentives or market revenues, and the system’s installed cost and degradation assumptions.
For Ontario Class A customers, for example, reducing consumption during the province’s top five system peak hours can affect Global Adjustment exposure through the facility’s Peak Demand Factor. Other facilities may derive more value from monthly demand management, operational resilience or another use case. IESO
This is why Green Integrations begins storage evaluation with interval data and financial modelling. In an actual Green Integrations audit of a large GTA fulfilment facility, a roughly 1 MW / two-hour BESS was evaluated alongside solar and efficiency opportunities. The battery offered potential value, but the engineering analysis concluded that solar represented the stronger investment opportunity for that particular facility.
The point is not that one technology is universally better. It is that capital should follow the facility economics. The commercial battery storage assessment process is designed around that principle. When comparing options, use IRR, NPV and lifecycle cost alongside simple payback.
What this means in practice.
- High electricity consumption alone does not prove BESS viability.
- Actual interval data matters.
- Tariff and demand structure matter.
- Multiple value streams should be modelled together.
- Battery economics should be compared with solar and efficiency alternatives.
Best-fit environments.
- You are planning capital investments as a CFO or finance team.
- You are commissioning a battery feasibility study.
- Your facility is an Ontario Class A customer.
- You operate a high-demand manufacturing or warehousing facility.
- You are making a solar-plus-storage decision.
- Your facility is considering a resilience investment.
