Evgeny_V/Shutterstock. Save for later Print Download Share LinkedIn Twitter Taiwan is repositioning its 2.6 gigawatts of pumped-storage hydropower capacity as a giant “water battery” to support the transition to a "smart" and flexible power system with priority access for renewables. The left-of-center Democratic Progressive Party (DPP) administration under President Tsai Ing-wen aims to phase out nuclear power by 2025 and push the share of variable renewable energy (VRE) to between 60%-70% of electricity supply by 2050 as part of its pathway to net carbon neutrality.