215 kWh Cabinets for Peak Shaving and Demand Reduction
A 15-minute peak sets your demand charge for the entire month. Shaving it is the fastest-payback storage application in commercial and industrial buildings — and the one with the fewest moving parts.
The Arithmetic
If your facility peaks at 400 kW for fifteen minutes a month and your demand charge is $18/kW, that peak costs you $7,200 a month — whether you used the power for fifteen minutes or fifteen hours.
A 100 kW / 215 kWh cabinet that clips the top 100 kW of that peak saves up to $1,800 a month in demand charges alone, before any energy arbitrage or backup value. Installed cost for a 215 kWh cabinet typically pays back in 3–5 years on demand-charge savings in markets with high demand charges.
The Product
| Parameter | HJ-ESS-215A |
|---|---|
| Rated energy | 215 kWh |
| Usable energy | 193.5 kWh (90% DoD) |
| Rated power | 100 kW |
| Cell chemistry | LiFePO4, 280 Ah |
| DC voltage range | 600–900 V |
| Enclosure | Outdoor cabinet, IP54 |
| Dimensions | 1,600 × 1,200 × 2,100 mm |
| Weight | ≈2,400 kg |
| Cooling | HVAC, thermostat controlled |
| Certification | CE, IEC 62619, UN38.3, RoHS |
Where It Pays
High Demand Charges
Markets where demand charges exceed $15/kW/month. The higher the charge, the shorter the payback.
Capacity Charges
Sites billed on kVA rather than kW — power factor correction plus peak clipping compounds the saving.
Backup as a By-Product
The same cabinet that shaves peaks also carries essential loads through an outage. One asset, two revenue streams.
EV Charging Sites
A 60 kW charger on a 100 kW supply needs storage or a supply upgrade. Storage is usually cheaper than the upgrade.
The Certification Boundary
The 215 kWh cabinet is a behind-the-meter asset. It is CE marked (LVD, EMC, RoHS), IEC 62619 and UN38.3 compliant. It does not carry EN 50549 or the national grid-code certificates required for front-of-meter connection or grid export.
Behind-the-meter peak shaving, self-consumption and backup are all within scope. Export to the distribution network is not. If your project needs front-of-meter connection, tell us on the first call.
Send Us 12 Months of Interval Data
A CSV of 15-minute kW readings for the last 12 months is enough to model the saving precisely. We will return a shaving strategy and a payback curve.