Caterpillar microgrid Tuscon
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Caterpillar launched a new microgrid system in the US this week comprising remotely monitored solar PV panels, energy storage and diesel generator sets.
Caterpilar Microgrid Arizona
Caterpillar’s test hybrid microgrid system in Arizona uses two PV arrays. One is fixed and the other uses single axis tracker technology

The hybrid technology is offered as a turnkey solution or customised package for projects ranging from 10kW to 100MW, confirmed Rick Rathe, general manager of new ventures for Caterpillar’s Electric Power business, at the launch event in Tuscon, Arizona, on Wednesday.

Rathe said the scaleable plug n’ play system, which will be sold through its dealer network, is suited to a range of applications including African rural electrification, industrial facilities, mining installations and telecommunications towers.

The test system installed at Caterpillar’s proving ground for heavy machinery in the Sonoran Desert, is made up of 500kW of photovoltaic (PV) solar power along with 500kW of short-term energy storage and three C15 410-kW diesel generator sets.

The integrated system is expected to reduce fuel consumption by approximately 33%.

Commenting on the timing of the launch, Rathe said: “With the declining cost of renewable energy sources and rapid advances in energy storage technology, the time is right to provide an integrated application for remote power.”

Caterpillar forges partnerships

[quote] The unveiling follows Caterpillar’s creation of a strategic partnership with solar PV module manufacturer First Solar in 2015.

Arizona-based First Solar is supplying Caterpillar-branded thin film solar modules, which the company claims are suited for high-temperature, high humidity, desert and coastal conditions.

Caterpillar has also invested in US energy storage company Fluidic Energy to utilise its rechargeable metal-air storage. The advantage for rural areas, says Rathe, is the materials have no commercial value and should reduce theft.

The Ilinois-headquartered company said it can also supply ultra capacitors and lithium-ion batteries as part of the integrated system.

Role of data analytics

The modular system can run with or without gen-sets and on or off-grid, explains Rathe, but depends on connected devices and data analytics to ensure the system delivers the lowest cost of electricity.

Data from each part of the system is communicated to a Caterpillar-developed microgrid master controller unit in real or near-real time and processed by CAT Connect, the multinational’s data processing centre.

Rathe says the system allows the company, its dealers and end-users to monitor the hardware and detect maintenance issues as well as set the percentage of load from renewable sources depending on conditions.

The company said its full end-to-end service also offers support to find funding as well as a mobile revenue collection system offered through Powerhive, a US start-up that is already active in Kenya’s utility sector.

Interview: Cat Microgrid in Africa

ESI Africa’s Rose Bundock talks to François-Xavier Saury, Caterpillar’s microgrid business development manager for Europe, Middle East, Africa and CIS, about how the technology will apply to African conditions.

Listen to the interview here:

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