Green Motion Smart Lift Energy Management

Elevator energy recovery is the process of capturing kinetic energy generated during elevator braking and descent, and converting it back into usable electrical energy. In conventional systems, this braking energy is wasted as heat through resistors. Energy recovery systems store or reuse this energy, reducing overall elevator electricity consumption by 30–70% depending on the system type and building usage patterns.

Green Motion is an integrated elevator energy management system that combines an SQML gearless permanent magnet motor, inverter, smart card controller, and battery storage. During braking and descent with heavy loads, the motor operates as a generator and feeds regenerated energy into the battery. The stored energy powers subsequent elevator trips, reducing grid electricity consumption by over 70%. The system intelligently manages energy flow between grid, motor, and battery.

Regenerative braking occurs when the elevator motor operates in reverse as a generator — during descent with a heavy car or ascent with a light car. Instead of dissipating this energy as heat through braking resistors (the conventional approach), regenerative systems capture it. Green Motion stores this energy in batteries for reuse. Other systems feed it back to the building grid in real time, though this requires the energy to be consumed immediately by other building loads.

Energy savings depend on the system type and building usage. Line regenerative drives (grid feedback) typically save 20–30%. Battery-based systems like Green Motion save over 70% because they store energy for reuse regardless of other building loads. In a typical residential building with moderate elevator usage, Green Motion reduces annual elevator electricity consumption from approximately 4,000 kWh to under 1,200 kWh.

Yes. The Green Motion battery system stores enough energy for approximately 200 elevator trips without any grid electricity. During a power outage, the elevator continues to operate normally — passengers are not trapped, and vertical transportation is maintained. This is a significant safety and comfort advantage over conventional elevators, which stop immediately during power failures and may require manual rescue.

Grid regenerative drives feed braking energy back to the building electrical network in real time. This energy must be consumed immediately by other loads (lighting, HVAC), otherwise it is wasted. Battery storage systems like Green Motion capture the energy regardless of building load conditions and reuse it for the next elevator trip. Battery systems deliver higher total savings (70%+ vs 20–30%) and provide backup power capability that grid-only systems cannot.

Green Motion enables A-class energy consumption certification for elevators according to VDI 4707 and ISO 25745 standards — the highest available rating. This is achieved through the combination of a high-efficiency gearless permanent magnet motor (95% efficiency), regenerative energy capture, and intelligent battery management. A-class certification supports green building standards such as LEED, BREEAM, and DGNB.

The Green Motion system supports elevator carrying capacities up to 1,250 kg with travel speeds up to 1 m/s. It operates on single-phase 230V input, making it suitable for residential buildings, small commercial buildings, and retrofit installations where three-phase power may not be available. The single-phase operation also simplifies electrical installation and reduces infrastructure costs.

Yes. Green Motion is designed for both new installations and retrofit modernization of existing elevators. By replacing the conventional geared motor and drive system with the integrated Green Motion package, older elevators achieve 70%+ energy savings and gain battery backup capability. The installation requires no major structural changes to the shaft or machine room, making it a cost-effective modernization solution.

The Green Motion battery system is designed for a service life that matches the elevator lifecycle. Unlike supercapacitor systems that require replacement every few years, the battery management system in Green Motion optimizes charge-discharge cycles to maximize longevity. The system includes built-in monitoring for battery health, state of charge, and remaining capacity, allowing predictive maintenance scheduling.