Caterpillar’s energy storage system increases power efficiency

Caterpillar has introduced its new Compact ESS, a mobile battery energy storage system that supplements traditional mobile power solutions.

The energy storage system (ESS) enables its user to minimize fuel usage which in turn can reduce costs, associated maintenance requirements and greenhouse gas emissions when compared to continuous generator set usage.

Designed for rapid plug-and-play installation and integration, the Cat Compact ESS module can be used with any combination of diesel, natural gas or renewable energy sources such as solar or wind. The ESS stores surplus power from these energy sources and then discharges from its reserve as needed.

Cat Compact ESS modules are designed for applications requiring long periods of low loads, such as at night, around-the-clock or time periods when a silent supply of energy is required. When used in these applications, the Cat Compact ESS modules can increase power efficiency, resulting in decreased fuel usage.

"Our customers are asking for additional options along with traditional power solutions to help them reduce emissions and noise," said Jason Kaiser, Senior Vice President for Caterpillar Electric Power division.

The storage system is equipped with an energy control module, and an onboard management system that continuously monitors load levels and automatically switches between generator set power and stored energy as necessary. This allows the generator set to only be used for recharging or accommodating higher loads.

Based on expected power needs, the Cat Compact ESS modules are ideal for equipment charging stations, offices, auxiliary buildings and security systems at construction, mining, oilfield and pipeline worksites.

The Cat Compact ESS also enables remote monitoring and control of all connected systems, including generator sets, solar PV, inverters, grid, batteries, meters and sensors.

Caterpillar offers two models of the Cat Compact ESS module, with configurations available for 50 Hz or 60 Hz applications.

The Cat XES60 provides up to 56.8 kWh of capacity, while the Cat XES120 delivers up to 127.9 kWh of capacity.

Enabling full recharging in as little as four hours, Cat Compact ESS modules feature lithium-ion batteries to provide thermal stability, high discharge/recharge efficiency and high cycle life.

The storage systems offer simple, straightforward connections to generator sets and other energy sources, enabling quick and smooth worksite deployment.

Users of the Cat Compact ESS module can subscribe to advanced data collection, visualization reporting and alert capabilities. Through an easy-to-use web interface, this technology helps track and manage the operation of the system in real time, confirm desired cost savings, flag potential problems, perform remote troubleshooting, offer long-term archives of site performance history and identify opportunities for further operational or system enhancement.

Cat Compact ESS modules are packaged in weather and debris-resistant enclosures for deployment in rugged working conditions, and they can be mounted on tow trailers to simplify transport and repositioning around the jobsite.