C&I battery system
Air- and liquid-cooled systems from 50 kW cabinets to MW-class containers, sized to your peak.
Solution
Peak Shaving
Battery systems discharge during demand peaks to reduce grid demand charges for factories and commercial sites.
The challenge
The cost of demand peaks
On commercial tariffs, a few minutes of peak demand can set the demand charge for the whole month.
- Short load spikes from machines, compressors or chargers inflate the monthly demand (kW) charge.
- Demand charges can be a large share of an industrial electricity bill, independent of total consumption.
- Grid connection upgrades to handle peaks are slow and expensive.
How it works
How peak shaving works
The battery discharges precisely during demand peaks and recharges off-peak.
- 01
Load monitoring
The EMS/HEMS continuously measures site demand against your target threshold.
- 02
Peak detected
When demand approaches the limit, the PCS begins discharging in milliseconds (≤20 ms response).
- 03
Battery covers the spike
The PCS supplies the peak — with 1.5 Pn / 10 s overload headroom — so grid draw stays below the threshold.
- 04
Off-peak recharge
The battery recharges from the grid or PV during low-tariff periods.
Outcomes
System specifications
≤ 20 ms PCS charge/discharge response
1.5 Pn / 10 s overload capacity
8,000+ battery cycles
Product specifications are indicative for the Hithium 261 kWh C&I storage class. Project outcomes such as payback, self-consumption and demand-charge reduction depend on your site load profile, tariff and system sizing, and are confirmed in the project quote.
Sunket Supply scope
What Sunket Supply supplies
Storage PCS
Deye or Growatt storage PCS with up to 99% efficiency for fast peak response.
EMS configuration
Threshold setup, monitoring and tuning to your tariff structure.
FAQ
Frequently asked
How much can peak shaving save?
Savings depend on your tariff and load profile. Sites with sharp, predictable peaks typically cut demand charges most. We model your case from interval meter data before quoting.
Do I need solar for peak shaving?
No. Peak shaving works with a grid-charged battery alone, and can be combined with PV for additional savings.
What payback can I expect?
It depends on your demand-charge rate, peak profile and any price-arbitrage spread. We run a site-specific ROI calculation from your tariff and interval data before quoting.
Request a project-specific quote
Share your site profile and Sunket Supply returns a tailored quote from European stock — typically within 1–2 business days.