Field Programmable Gate Arrays (FPGAs) have become very popular as embedded components on computing platforms. An FPGA is a viable, reprogrammable design approach that provides a fast time-to-market alternative to Application Specific Integrated Circuits (ASICs). Since FPGA implementations can be customized to fit for any application, their versatility leads to performance gains, and enables reuse of expensive silicon. Although high performance can be achieved in FPGAs, their high levels of power consumption pose a critical design challenge. This book will be an invaluable reference for researchers and practicing engineers concerned with power-efficient, FPGA design. State-of-the-art power reduction techniques for FPGAs will be described and compared. These techniques will be applied at the circuit, architecture, and electronic design automation levels to describe both the dynamic and leakage power sources and enable strategies for codesign.