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Renewable-Energy Powered Storage System Slashes Roto-Molder’s Fuel Costs and GHG Emissions

Image courtesy of Brenmiller fortlev-1540x800.jpg
Standing in front of Brenmilller's thermal energy storage unit (left to right) are Avi Brenmiller, President and CEO of Brenmiller Energy; Daniel Zonshine, Ambassador of Israel in Brazil; and Antonio Torres, CEO of Fortlev Solar.
Brazilian roto-molder Fortlev has installed a system that uses super-heated crushed rocks to store and convert energy.

A novel thermal energy storage system powered by renewable energy is substantially cutting greenhouse gas (GHG) emissions during the rotational molding of polyethylene water tanks.

Fortlev, which makes water storage solutions including tanks, pipes, and connectors, is using a Brenmiller Energy bGen Thermal Energy Storage (TES) unit at its production facility in Anápolis, Brazil. The 1-MWh bGen unit uses renewable biomass instead of natural gas to heat the air for Fortlev’s roto-molding process. This lowers fuel costs for the process by 75% and cuts associated GHG emissions by about 800 metric tons a year.

The bGen combines thermal storage, heat exchange, and steam generation in one unit. Crushed rocks inside the unit are heated to more than 600°C, then store that heat for minutes, hours, or days until required. The bGen can be charged not only by biomass, flue gas, or recovered heat, but also by electricity. Brenmiller said its method stores and converts energy more efficiently than battery-based energy storage technologies.

Next, Fortlev and Brenmiller Energy are planning to install 60 bGen units at the facility for further emissions reductions.

“The bGen will power batch production of Fortlev's water tanks,” said Doron Brenmiller, Chief Business Officer. “There is potential for 75% cost reduction compared to Fortlev's existing heating costs, and the planned install of 60 units represents 48,000 metric tons less CO2 emissions per year.”

48,000 metric tons of GHG emissions is about the equivalent of the GHG emissions produced by 10,500 gas-powered passenger vehicles annually.

The bGen simply connects into Fortlev’s roto-molding machines, Brenmiller said. “The bGen can support any process that requires hot air, hot water, or steam.”

The companies now are discussing selection of the next Fortlev site for deployment of bGen. Fortlev has seven other manufacturing facilities in Brazil. And, Fortlev Solar plans to open a facility to produce bGen units for the Brazilian market.

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