The Center for Future Energy Systems (CFES) CFES is the Energy Center for Advanced Technology (Energy CAT) in New York State and is funded by NYSTAR (New York State Office of Science, Technology and Innovation) and industrial partners. CFES conducts fundamental and applied research to accelerate the development of energy efficient and renewable energy technologies. Working with other academic and government institutions, and with many industry partners, we focus on the development and application of new energy materials, devices and systems. Project areas include low cost, high efficiency photovoltaic solar cells, wind turbine blade performance enhancement, advanced lighting sources, fuel cell testing and characterization, smart buildings, energy storage technologies, renewable energy grid integration, microgrid, and smart grid. CFES brings the academic research, knowledge, and technology of Rensselaer Polytechnic Institute (RPI) together with partners Cornell and Brookhaven National Laboratory to promote collaborative efforts with industry.