The National Science Foundation (NSF) is seeking grant applications for the Electrochemical Systems program, which is part of the Chemical Process Systems cluster. The program aims to support fundamental engineering research that will enable innovative processes involving electro- or photochemistry for the sustainable production of electricity, fuels, and chemicals. Proposals should address key barriers to improved system or component-level performance, such as energy efficiency, product yield, and process intensification. Current topics of interest include advanced battery systems, fuel cell systems, flow batteries, photocatalytic or photoelectrochemical processes, and organic photovoltaic devices. The typical award size for the program is $100,000 per year, with collaborative proposals that include a strong multi-disciplinary component typically receiving $150,000 per year. The duration of unsolicited awards is typically one to three years. Proposals requesting a substantially higher amount than this, without prior consultation with the Program Director, may be returned without review.