This study presents a flexible batch electrodialysis reversal (EDR) technology for solar-powered brackish water desalination, aiming to address water scarcity in rural areas. The proposed photovoltaic (PV)-powered desalination system optimizes pumping and EDR power to match the availability of intermittent solar energy, maximizing desalination rates. The system demonstrates improved performance by directly using 77% of available solar energy, reducing battery reliance by 92%, and achieving a 22% reduction in water cost compared to conventional systems. The flexible EDR technology is particularly suitable for village-scale applications, offering a cost-competitive and sustainable solution to water scarcity in remote regions. The study also highlights the potential for future advancements to further reduce costs and enhance the technology's effectiveness.This study presents a flexible batch electrodialysis reversal (EDR) technology for solar-powered brackish water desalination, aiming to address water scarcity in rural areas. The proposed photovoltaic (PV)-powered desalination system optimizes pumping and EDR power to match the availability of intermittent solar energy, maximizing desalination rates. The system demonstrates improved performance by directly using 77% of available solar energy, reducing battery reliance by 92%, and achieving a 22% reduction in water cost compared to conventional systems. The flexible EDR technology is particularly suitable for village-scale applications, offering a cost-competitive and sustainable solution to water scarcity in remote regions. The study also highlights the potential for future advancements to further reduce costs and enhance the technology's effectiveness.