Commercial ESS PCS Sizing: Power and Capacity Are Different Decisions
Peak shaving buys power; tariff arbitrage buys capacity. Size them separately.
011 · Read the tariff first
Two-part tariffs charge demand (kW) plus energy (kWh). PCS power attacks the demand line; battery capacity attacks the energy spread.
022 · Power decision
How deep must the peak be shaved? That sets PCS rating. Our PCS series (DZ-NE5000-PCS) is a bidirectional unit for peak shaving and demand management.
033 · Capacity decision
How long must the discharge run? That sets battery capacity — and the arbitrage window.
044 · They interact
Mismatched sizing wastes capital on either side. Size from the load curve, not the catalog.
05Next step
Send the load curve and tariff structure — a sizing framework within 24 hours.
Submit inquiry — answered within 24h
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