Battery Energy Storage
Under RP4, every kW of peak demand costs you twice.
Since July 2025, your peak demand is billed through two separate line items — Capacity and Network charges — worth roughly RM89 to RM97 per kW, every month. AI-managed battery storage responds to load spikes in under a second, holding that peak down before it's recorded.
The problem
A single 30-minute spike can cost you for the whole month.
Maximum Demand is the highest average power your site draws in any 30-minute interval during the billing month, measured in kW. Under RP4 the old single MD charge was split into a Capacity Charge and a Network Charge — so one badly timed spike now inflates two line items at once, for all 30 days, even if your total kWh never changes.
RP4 demand charges, per kW / month
Effective 1 Jul 2025 – 31 Dec 2027
Medium Voltage
General
Capacity RM29.43 + Network RM59.84
RM89.27
Medium Voltage
Time-of-Use
Capacity RM30.19 + Network RM66.87
RM97.06
High Voltage
ToU
Capacity RM21.76 + Network RM23.06
RM44.82
Indicative published RP4 rates. Confirm the figures for your exact tariff against your current TNB bill — the Energy Commission can revise them within the period.
Without BESS selected. Billed peak is 1,020 kilowatts and the monthly demand charge is RM 91,055.
Billed peak
1,020 kW
Demand charge
RM 91,055
Saving / mo
—
A chiller or compressor startup at 10am pushes demand to 1,020 kW — locking in RM 91,055 in Capacity and Network charges for the entire month.
How it works
Three jobs, one battery system.
Our BESS is driven by an AI system that monitors and manages your consumption in real time.
| FUNCTION | WHAT IT DOES |
|---|---|
| Peak shaving | Reacts to load spikes within seconds, holding recorded Maximum Demand below your target ceiling |
| Solar utilisation | Stores surplus solar generation during weekends or low-load periods instead of capping output |
| Backup resilience | Optional upgrade providing backup power during unexpected outages |
How it works
Solar + BESS working together, second by second.
During the day, solar generates power. The battery stores the surplus. The moment a load spike threatens to push demand above your ceiling, the battery discharges — instantly, automatically, silently.
Step 01
Solar Generates
Panels convert sunlight to DC from first light, peaking through the middle of the day
Step 02
Power Distributed
Inverter converts to AC. Building loads are served first; surplus charges the battery
Step 03
BESS Monitors
AI watches demand against your ceiling in real time, armed to discharge the instant a spike begins
Step 04
Spike Absorbed
Load surges toward the ceiling — the battery discharges in under a second to cover the difference
Step 05
Both Charges Held
Recorded demand stays at 750 kW. Capacity and Network charges are both billed on the lower figure
THE RESULT — EVERY MONTH
A factory previously recording 1,020 kW peaks paid RM 91,055 a month across Capacity and Network charges. Holding demand at 750 kW brings that to RM 66,953 — on the same production output.
RM 24,103
saved per month on demand charges alone
≈ RM 289,000 / year
Tariff context
Why this matters more under RP4.
Malaysia's RP4 electricity tariff structure (effective 1 July 2025 to 31 December 2027) puts more weight on how businesses manage usage, not just how much they consume in total.
What this means for you: For sites with solar PV, a battery system can store available energy and discharge it later when demand rises — supporting a more stable power profile and giving you a practical lever for cost control beyond simply reducing total kWh usage.
Zero CAPEX available
Storage without the upfront capital burden.
For qualifying businesses, BESS can be deployed on a zero-CAPEX model — letting you start controlling demand charges without a large upfront investment.