Intelligent Storage for Maximum Demand Shaving in Malaysia

What "intelligent MD shaving" means

A battery only cuts the TNB Maximum Demand charge if it still has energy during the exact half-hour that sets the monthly peak. A simple timer or a forecast-based controller can discharge too early and leave nothing for the real peak. Intelligent MD shaving means the battery decides — moment to moment, from the site's actual demand — when to discharge, when to hold reserve, and when to recharge, so the shave lands on the interval that actually sets the bill.

That decision layer is EWISER Energy Decision Management (EDM): a reserve-aware, forecast-free control framework. It is the difference between owning a battery and owning a battery that reliably lowers your Maximum Demand.

EWISER + InverPower — one solution, two roles

EWISER is the intelligence and validation layer. It sizes the system against your TNB load and tariff, runs the EDM reserve-aware dispatch that shaves Maximum Demand, and validates the saving on your real metered load with Live Shadow before any capital is committed. It is vendor-neutral software, not a hardware sale.

InverPower delivers on the ground in Malaysia: supply, installation, commissioning and local service of the storage system. Live Shadow already runs at InverPower's office in Kuala Lumpur. Together, EWISER + InverPower give a Malaysian C&I customer a complete intelligent-storage solution — the brains and the delivery — for Maximum Demand shaving.

How EDM shaves TNB Maximum Demand

EDM defends three operating boundaries. The Ceiling is the Maximum Demand target it protects — when grid import approaches it, the battery discharges to hold the line. The Guard preserves reserve energy when demand signals rising peak risk, so the battery is not spent before the real peak. The Floor governs safe, controlled recharge during low-demand periods, so charging never creates a new peak.

Because these boundaries are calibrated on real site data rather than a forecast, the strategy is forecast-free and holds up when the load behaves unexpectedly — the property that makes the demand-charge saving dependable month after month.

Prove the saving before you buy the hardware

EWISER Live Shadow runs a virtual battery on your real TNB-metered load, dispatched by the same EDM engine a physical system would use, and logs the would-be Maximum Demand reduction in real time. You see the demand-charge saving proven on your own site — on live operation, not a one-off study — before committing any capital.

This turns a Maximum Demand projection into measured evidence, so the sizing InverPower delivers is the sizing your load actually justifies.

Why this matters for Malaysian C&I sites

TNB bills Medium Voltage commercial and industrial customers (tariffs such as C1 and C2) on both energy and Maximum Demand, where the demand charge is set by the highest half-hour of the month. A plant with brief spikes over a low average pays disproportionately, so intelligently clipping those spikes improves the effective load factor and lowers the billed Maximum Demand across the months that set it.

The result is a storage investment sized on evidence and controlled by intelligence, delivered and serviced locally — not a hardware guess.

Frequently asked questions