A controller for controlling an energy saving mode of an elevator includes at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the controller to at least perform: obtaining information associated with operating the elevator; determining dynamically a time period for maintaining an idle mode of the elevator based at least in part on the information; and issuing a request to switch from the idle mode to the energy saving mode after the time period expires.

An energy-saving elevator. The energy-saving elevator includes an elevator car, a counterweight, a lift cable, and a hoist-type lifting mechanism. The hoist-type lifting mechanism includes a first adjustable pulley, a second adjustable pulley, and an adjustable cable interconnected between the first adjustable pulley and the second adjustable pulley. The first adjustable pulley includes a first fixed conical member with a first conical surface and a first moveable conical member with a second conical surface. The first conical surface and the second conical surface form a first trapezoid-shape groove between the first fixed conical member and the first moveable conical member. The first trapezoid-shape groove is configured to receive the adjusting cable. The first conical surface and the second conical surface are configured to hold the adjusting cable inside the first trapezoid-shape groove.

According to an aspect, there is provided an energy storage system for an elevator car of an elevator system, comprising an energy storage; an energy storage management system connected to the energy storage and configured to monitor a state of the energy storage. The energy storage management system is configured to communicate directly with a charging arrangement located in an elevator shaft via a first communication channel to start and stop charging of the energy storage via the charging arrangement. The energy storage management system is further configured to communicate with an elevator controller associated with the elevator car via a second communication channel.

An elevator and a method for determining energy and/or power consumption of an elevator, the elevator comprising a drive system comprising a drive unit for driving an electric motor and an elevator control system for controlling the drive system, wherein at least two different operating states are used for the elevator. The method comprises measuring at least part of power and/or energy consumption of the drive system, at least when the elevator is moving, determining duration which the elevator spends in different operating states of the elevator, and determining energy and/or power consumption of the elevator based at least in part on the measured power and/or energy consumption of the drive system and determined and/or estimated energy and/or power consumption in different operating states of the elevator.