Energy Storage for Business

Cut your demand charge. Shift your peak. Keep the lights on.

Commercial and industrial energy storage from EAST, sized against your actual CEB tariff.

Your tariff just went up 18%

From 11 May 2026, high-usage businesses saw an increase of around 18%. If your contract demand is above 42 kVA, you pay a maximum-demand charge of Rs 1,650 for every kVA of peak demand, every month, whether you used it for one minute or all day. That line on your bill is exactly what a battery attacks.

Three ways a commercial ESS earns its keep

1. Demand shaving. Your demand charge is billed on your highest peak. A battery discharges during those peaks, so the meter never sees them. Shave 50 kVA off a General Purpose supply, at Rs 1,650/kVA, and that is roughly Rs 82,500 a month before a single unit of energy is saved.

2. Time of Use arbitrage. On a General Purpose (GP-2) supply you buy at Rs 33 off-peak and pay Rs 78 in the evening peak. The battery charges cheap after 10.30pm and spends dear from 6.30pm. Every shifted unit earns the spread, every day.

3. Solar self-consumption. Daytime rooftop solar feeds your load directly at zero marginal cost against a day rate of Rs 49, and the surplus charges the battery for free. No net-metering paperwork, no export approvals. The value is in what you do not buy.

Your tariff, your numbers

  • General Purpose (shops, offices, commercial): peak Rs 78, day Rs 49, off-peak Rs 33, demand Rs 1,650/kVA. The full double play: arbitrage plus demand shaving.
  • Industrial (I-2): the same maximum-demand structure at Rs 1,650/kVA, with a peak/off-peak spread of Rs 78 / Rs 33. Demand shaving leads, backup protects production.
  • Hotel: same structure as industrial, but an outage costs you guests, not just money. Sub-20-millisecond switchover means the kitchen, lifts and front desk never blink.
  • Government, religious & institutional: a wide peak/off-peak spread (peak Rs 78 vs off-peak Rs 33, demand Rs 1,650/kVA) with the 18% increase applied. The payback case writes itself.

The hardware

EAST liquid-cooled commercial ESS cabinets: 125 kW / 261 kWh per cabinet, parallel up to multi-megawatt. LiFePO4 chemistry, per-pack fire protection, IP54 outdoor-rated system (PCS IP66, battery IP67), and warranty coverage of up to 10 years on eligible EAST ESS packages, confirmed in the official quotation. PV-hybrid variants integrate rooftop solar directly. EAST (est. 1989, Shenzhen Exchange listed) builds the platform sold under premium badges worldwide. We supply it with the badge that answers the phone in Colombo.

How it works

  1. Send us three recent electricity bills.
  2. We run a free load study: your real demand profile, tariff category, and shave potential.
  3. You receive a fixed proposal: hardware, installation, projected monthly saving, payback timeline, and the CEB documentation pack for your utility engineer.
  4. Reserve with 30%, balance on commissioning.

Request a commercial site assessment

Rates shown are from the PUCSL tariff effective 11 May 2026 for supplies above 42 kVA (400 V); 11 kV supplies differ slightly. Your exact category and figures are on your bill and are confirmed in the free load study. Savings depend on your tariff, load profile and how the system is operated.