Discover the Eco+ system from Sáez Cranes, a solution based on high-power supercapacitors. This technology allows for energy recovery during braking, smooths peak demand, and reduces electricity consumption by more than 33% in tower cranes.

The construction sector increasingly demands solutions that combine industrial performance with sustainability and cost savings. At the same time, operating margins are becoming increasingly tight, and energy efficiency in heavy machinery has gone from being a luxury to a necessity.

Sáez Cranes has responded to this challenge with the launch of the Eco+ system, an advanced technological innovation based on our new energy-saving system for tower cranes, a solution developed to improve operational efficiency and significantly reduce electricity consumption in any Sáez crane model.

Energy Efficiency as a Priority in Lifting Loads

The heart of Sáez Cranes’ Eco+ system is based on the use of supercapacitors, high-power energy storage devices that, unlike conventional batteries, allow for extremely fast charging and discharging, withstanding a very high number of cycles without significant degradation.

This technology offers decisive advantages for intensive crane operation:

  • Instant Response: Immediate power delivery to cover starting peaks, perfectly synchronized with the crane’s operating dynamics.
  • Operational Longevity: Its lifespan exceeds that of the crane itself in many scenarios, eliminating the need for the periodic replacements typical of battery banks.

This makes our Eco+ solution an ideal technology for industrial applications with repetitive cycles and variable power demands, such as those found in tower cranes.

New Eco+ System from Sáez Cranes: Up to 33% Proven Energy Savings
New Eco+ System from Sáez Cranes: Up to 33% Proven Energy Savings
New Eco+ System from Sáez Cranes: Up to 33% Proven Energy Savings
New Eco+ System from Sáez Cranes: Up to 33% Proven Energy Savings

Competitive Advantages of Supercapacitors in the Sáez Cranes Eco+ System

In our system, supercapacitors allow us to recover and reuse the energy generated during specific phases of the work cycle, reducing peak demand and recovering energy during load lowering and braking during slewing movements.

This advanced mechanism transforms the crane’s energy management through an efficient recovery process. Supercapacitors capture and store the energy generated during specific phases of the work cycle that would normally be wasted.

Instead, this stored energy is later reused to reduce the peak electrical demand the crane places on the grid. Therefore, the result of incorporating Sáez’s Eco+ technology is a more efficient, stable, and sustainable operation.

Real-world results from Eco+ system factory testing

The effectiveness of the Eco+ system is not theoretical; it has been validated through exhaustive evaluations. During tests conducted at Sáez Cranes’ facilities, the system demonstrated the extraordinary potential of this technology with highly satisfactory performance.

Depending on the cycle type and operating conditions, measured energy savings ranged from 27.2% (in the smallest cranes) to 33.77% (in the largest cranes), confirming the real-world reliability of this technology applied to tower cranes.

These metrics go beyond mere technical savings, becoming a direct profitability tool. Reducing energy consumption in heavy-duty cranes by more than a third translates into a drastic optimization of construction site operating costs.

Sáez Cranes Eco+ System: Actual energy savings and regenerative braking graphSáez Cranes Eco+ System: Actual energy savings and regenerative braking graph

Key advantages of the Eco+ system

The implementation of supercapacitors provides clear competitive advantages for construction and rental companies:

  • Cost reduction: Lower electricity consumption and reduced impact of power surges on the grid translate into direct cost savings.
  • Industrial compatibility: The system is designed for seamless integration into demanding applications.
  • High reliability: By reducing stress on the electrical grid and using long-life components, the overall operational efficiency of the machinery is improved.

With the Eco+ system, Sáez Cranes reinforces its commitment to continuous innovation, energy efficiency and sustainability, and the constant improvement of our equipment, offering our clients solutions with verifiable technical and economic benefits.

For more information about this advanced upgrade, please do not hesitate to contact us.

Unlike conventional chemical batteries, which are designed to be recharged using mains electricity, the Eco+ system from Sáez Cranes uses supercapacitors that are recharged using the lowering and braking maneuvers during the crane’s hoisting and slewing movements.

That depends on the crane’s hook height, the loads it is lifting or lowering, and the braking cycles. However, typically, for cranes at a standard hook height of 30 to 40 meters, savings of between 27% and 33% can be achieved.

A standard crane is equipped with braking resistors and dissipates excess braking energy through these resistors. With the Eco+ system, this energy is channeled and stored for use in the next movement.

Not exactly: to reduce the contracted power, you would need to use a generator with batteries or put the crane in Eco mode. The Eco mode is standard on all Sáez cranes and allows you to work with 25-30% less installed power, reducing the hoist, trolley and slewing speeds by half.

Yes, the Eco+ system has been developed for intensive use with thousands and thousands of work cycles.