What is maximum demand peak shaving?

Maximum demand peak shaving reduces the highest recorded 30-minute kW demand in a billing month. A BESS discharges during short peaks so the facility records a lower maximum demand charge on its TNB bill.

How is BESS sized for peak shaving?

BESS sizing starts with interval load data. Trexon checks the kW peak to reduce, how long each spike lasts, daily cycles, usable kWh, inverter rating, transformer constraints and backup requirements.

Can solar reduce maximum demand without BESS?

Yes, solar can reduce daytime maximum demand when factory load overlaps solar generation. BESS adds value when peaks happen outside solar hours, during cloud events, or when the factory needs a guaranteed MD cap.

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C&I BESS ROI Tool

Maximum Demand Peak Shaving Calculator Malaysia

Estimate how much a Malaysian factory can save by using BESS and solar to reduce TNB maximum demand charges. Use this as a first-pass model before Trexon builds a bank-ready dispatch simulation from your half-hourly load profile.

Run the estimate BESS solution guide

Typical opportunity

100-500 kW MD reduction

Best fit

Tariff E2 / C&I

Data needed

12 months bills

Battery type

LFP BESS

Lead route

BD Command Center

Model your MD reduction

Adjust the assumptions from your latest TNB bill.

Current recorded MD750 kW

Target MD reduction150 kW

MD charge rateRM 89.27/kW

Peak-shaving duration2 hours

Planned solar size400 kWp

This is a screening calculator, not a final proposal. Final BESS sizing needs interval load data, tariff category, transformer limits, fire safety layout and backup-runtime requirements.

Where BESS wins

Use BESS for the peaks solar cannot always cover

Solar usually reduces daytime peaks first. BESS becomes compelling when the same site has compressor starts, evening production, cleanroom loads, standby chillers or unpredictable spikes that keep resetting the monthly MD peak.

Factory start-up spikes

Cap short high-kW starts from motors, compressors, ovens and CNC lines before they set the month's MD.

TOU and RP4 exposure

Shift energy from solar or lower-cost periods into tariff windows where grid energy and MD exposure hurt more.

Board-ready savings case

Show finance teams the gap between solar-only, BESS-only and solar-plus-storage before committing CAPEX.

Commercial Solar

Get a Full BESS Peak-Shaving Model

Send your latest TNB bill and Trexon will model solar-only, BESS-only and solar-plus-storage savings for your facility.

Custom system design for your business
ROI analysis based on your electricity usage
Flexible financing: PPA, IPP, bank loans
Solar ATAP, TNB and ST documentation support

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