{"id":3285,"date":"2026-10-01T12:26:00","date_gmt":"2026-10-01T12:26:00","guid":{"rendered":"https:\/\/hmxenergy.com\/?p=3285"},"modified":"2026-09-30T04:37:40","modified_gmt":"2026-09-30T04:37:40","slug":"peak-shaving-battery-sizing","status":"publish","type":"post","link":"https:\/\/hmxenergy.com\/nl\/peak-shaving-battery-sizing\/","title":{"rendered":"Peak Shaving Battery Sizing for Factories: kW, kWh and Tariff Data"},"content":{"rendered":"
\"peak<\/figure>\n\n\n\n

Peak shaving is a power problem first and an energy problem second. The power rating must cover the amount by which load exceeds the target; the usable energy must sustain that reduction for the full peak event, including conversion losses and operating reserve.<\/p>\n\n\n\n

A monthly bill rarely shows enough detail. Sizing should start with interval demand data and the exact tariff rules used to calculate billed demand.<\/p>\n\n\n\n

Direct answer:<\/strong> Use at least one full year of interval data. Identify recurring peaks, exceptional events and seasonal production changes before choosing the target demand limit.<\/p><\/blockquote>\n\n\n\n

Define the boundary<\/h2>\n\n\n\n

For Factories and C&I EPCs in tariff-driven markets, the first task is to turn the intended service into measurable inputs and acceptance limits. The following table keeps the decision tied to evidence instead of a broad product label.<\/p>\n\n\n\n

Input<\/th>Unit<\/th>Use in model<\/th><\/tr><\/thead>
Interval facility load<\/td>kW by timestamp<\/td>Find peak magnitude and duration<\/td><\/tr>
Billing demand rule<\/td>kW and interval length<\/td>Reproduce utility bill<\/td><\/tr>
Target grid limit<\/td>kW<\/td>Set discharge command<\/td><\/tr>
Peak duration<\/td>hours<\/td>Calculate required usable kWh<\/td><\/tr>
System losses and reserve<\/td>percent or kWh<\/td>Convert usable requirement to installed capacity<\/td><\/tr><\/tbody><\/table>
Peak-shaving sizing inputs<\/figcaption><\/figure>\n\n\n\n
\"peak<\/figure>\n\n\n\n

Acceptance and failure tests<\/h2>\n\n\n\n

The commercial offer should state its assumptions, exclusions and measurement boundary. Buyers can then compare systems on the same basis and keep later design changes under document control.<\/p>\n\n\n\n

Example step<\/th>Calculation<\/th>Result meaning<\/th><\/tr><\/thead>
Power requirement<\/td>Measured peak minus target grid limit<\/td>Minimum PCS discharge power<\/td><\/tr>
Event energy<\/td>Sum of excess load across peak intervals<\/td>Usable discharge energy<\/td><\/tr>
Operational allowance<\/td>Event energy plus reserve and losses<\/td>Required available energy<\/td><\/tr>
Cycle count<\/td>Number of dispatch events per year<\/td>Warranty and degradation input<\/td><\/tr>
Savings check<\/td>Avoided demand charge minus energy and service costs<\/td>Project value before financing<\/td><\/tr><\/tbody><\/table>
Calculation sequence without invented tariff values<\/figcaption><\/figure>\n\n\n\n

Action points for the project team<\/h3>\n\n\n\n