Do you need high power all day? Or only for a few minutes?
When production equipment, cooling or vehicle charging run at the same time, a site's demand can rise significantly. BESS – Battery Energy Storage System can supply part of the required power from the battery.
Same site. Lower draw from the grid.
However, the height of the peak alone is not enough. We need to know how long it lasts, how often it occurs and when the battery can recharge.
| Additional power | Duration | Energy required, excluding losses and reserves |
|---|---|---|
| 100 kW | 15 minutes | 25 kWh |
| 100 kW | 3 hours | 300 kWh |
In both cases the power is the same, but the required storage capacity is not.
A technical peak reduction is not yet a financial saving.
The economic effect depends on how capacity and distribution charges are billed to you and on your contractual terms. That is why we assess separately whether the peak can be reduced and what the reduction is worth.
We also first examine the cause of the demand. If part of the overlap can be removed by better control of equipment, a larger battery may not be needed to address it.
Not every peak needs to be removed entirely.
Storage sized for an exceptional extreme can be disproportionately large. We therefore compare several configurations and their benefit against the investment.
When combined with photovoltaics or a backup reserve, the control must respect the shared limits of the battery. Capacity used for one task may not be available for another.
Let's look at your consumption.
Interval data helps us identify recurring peaks and compare solution options. The basis is consumption data, invoices and information about the main equipment.