Cycle Charging with Generator: Cleaner Power, Less Runtime
– Infinity Cube, BESS, Generator, Construction
Construction sites in Singapore face a dual challenge, the pressure to cut emissions and the reality of limited grid power, often capped at just 63A.
The Infinity Cube Battery Energy Storage System (BESS) offers a smart solution: a setup that uses the grid only when necessary, while the battery handles most of the site’s power needs. Even with limited grid capacity, this system works, because the battery can charge slowly during off-peak periods and power the load independently when needed.
This makes it one of the cleanest and most efficient ways to meet high site demand without overloading the grid.
The Infinity Cube BESS powers the load (e.g., tower crane, site office) as the main source of energy.
When battery SOC drops (e.g., 30%), the system automatically taps the grid to recharge — even on a limited connection like 63A.
Once the battery reaches ~95–100% SOC, the grid charging stops and the BESS resumes full supply.
⚡ Even with limited grid capacity, Infinity Cube manages demand efficiently by spreading charging over time.
Emission-free, quiet operation
Uses grid efficiently, no overdraw
Suitable for grid-limited zones like HDB projects or temporary cabins
No noise or fumes — perfect near residential areas
Real Site Results: How Cycle Charging Works
(Data captured from EMS at a live site in Singapore using the Infinity Cube BESS.)
Graph showing SOC (orange) and grid charging periods (red), with a 63A grid connection slowly charging the battery from 40% to 100% SOC adding approximately 40 kWh over 3 hours.
This graph captures how the Infinity Cube BESS works in a real project with restricted grid access. The battery powers the site continuously, while grid input only activates during scheduled charging windows keeping power delivery steady and the site clean and quiet.
Key Points to Highlight on the Graph:
SOC drops to 40%
This marks the battery’s lower threshold. The system automatically detects the drop and activates charging from the grid.
SOC returns to 100%
Once the battery is recharged, grid input stops. The system resumes battery-only mode, ensuring uninterrupted power while keeping grid usage efficient and minimal.
✅ Cleaner Operation
BESS output is silent, with no emissions. Best suited for urban environments where noise control is critical, such as HDBs and schools.
✅ Reduced Grid Stress
Unlike direct connections, this setup avoids peak-time grid overuse, helping utility providers maintain stability.
✅ Supports BCA Green Mark Certification
Aligns with energy-saving benchmarks and carbon reduction goals.
✅ Scalable for All Site Sizes
From tower cranes to passenger hoists, this bess + limited power grid works
The National Environment Agency (NEA) enforces construction-related limits on emissions and noise. By shifting power delivery to the silent-running BESS, and limiting use of high-emission backup sources, sites can more easily meet:
💡 Did you know? Infinity Cube’s EMS platform logs energy flow, and load profiles making it easier to prepare sustainability or regulatory reports.
📌 Reference: Singapore’s First Biennial Transparency Report – NEA
| Benefit | Impact |
|---|---|
| Smarter grid usage | Battery draws from the grid only when charging is needed |
| Works with limited grid capacity | Supports slow charging even with 63A grid |
| Reduced energy waste | Stops charging when battery reaches 100% SOC |
| Lower emissions | Battery remains the primary power source (no genset noise or smoke) |
| Quiet operation | Suitable for noise-sensitive zones near residential areas |
| Green Mark-friendly | Helps meet energy efficiency targets in BCA guidelines |
| Built-in intelligence | EMS auto-triggers grid input only when needed, no manual switching |
Choon Huat Engineering provides plug-and-play Infinity Cube systems that work with temporary grid setups. Our team can help you optimise power, reduce emissions, and meet project sustainability goals.
📌 No grid access? No problem.
Infinity Cube can also be deployed with a generator in cycle charging mode, cutting fuel use by up to 70%.
– Infinity Cube, BESS, Generator, Construction
