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Ice-Storage Tech Reduces Energy Costs at Texas High School

The Alamo Heights Independent School District in San Antonio, TX installed ice-based energy storage systems to cool more than 325,000 sq. ft. across five buildings on its high school campus. The school district was already using a 500 kW solar system and another five solar arrays totaling 400 kW to help power daily operations.

Even with those in place the district still wanted to reduce energy consumption during peak demand hours. That is why CALMAC IceBank tanks were installed to store cheap nighttime energy from the grid in the form of ice that can be melted to cool buildings during the day. As a result, the district has reduced peak energy consumption by more than 20%, despite an increase in square footage and student population.

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