Concrete Products

DEC 2018

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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Page 17 of 83

16 • December 2018 NEWS SCOPE PRODUCERS Crane-suspended concrete segments, patterned like an enormous stave silo, power a commercial scale-ready system announced last month at Energy Stor- age North America in Pasadena, Calif. The technology is based on what Swiss developer Energy Vault describes as "the principles that underpin traditional grav- ity-based pumped hydro plants. The new technology combines conventional phys- ics fundamentals of potential and kinetic energy with a proprietary, cloud-based software platform." The software operates a newly devel- oped, fully automated six-arm crane and orchestrates positioning of the concrete segments that provide the basis for effi- cient electricity storage and discharge at wind farms. The use of low cost and envi- ronmentally-friendly concrete materials enables the system to achieve low cost per kilowatt-hour and high round trip efficiency while delivering a 30-40 year life without any degradation in storage capacity. Energy Vault figures that a prop- erly configured system will be capable of reaching 100 percent of target power levels in 2.9 seconds. Energy Vault unveiled plans for a charter crane and segment installation in India next year, plus initial agreements with customers on multiple continents. A new technology and commercial partnership with a Swiss subsidiary of Mexico-based Cemex S.A.B. de C.V. will focus on optimization of various concrete Cemex R&D subsidiary sees the ups and downs of energy storage Energy Vault's method of storing and discharging energy is based on hydropower fundamentals, but replaces water with 35-ton segments cast from concrete bearing a variety of virgin or recycled materials, depending on country and market. The firm illustrates the 35-MWh storage system fully charged to fully discharged, proving the energy embodied in the transfer of thousands of tons of concrete.

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