ISA cuts water use 24,208 m3 since 2018 via Green Substations

ISA reported cumulative water savings of 24,208 cubic meters since 2018 from 28 “Green Substations” in Colombia. Global water consumption fell 17.5% over four years despite 20% operational growth across the region. Reuse of dismantled transmission towers cut new steel needs to 30 tons in 2025 from 91 tons in 2024. ISA said the tower-refurbishment program delivered a 73% reduction in manufacturing costs versus the prior year. Sogamoso substation reached 100% energy self-sufficiency, backed by a COP 723 million investment with COP 1.31 billion in benefits.