Impeded by the bottleneck of the information collection in the information chain, researchers are more and more interested in the development of wireless sensor networks; the applications of wireless sensor networks are growing too. But less attention are paid to wireless sensor networks planning. To resolve deployment challenges, reduce the deployment risk, we propose to build the planning and deployment platform for wireless sensor networks. POWER is a software environment for planning and deploying wireless sensor networks applications into actual environment. POWER has three main parts, network deployment, simulation, and performance evaluation and optimization. Simulation is the foundation of the POWER. Lifetime is the most important performance evaluation metrics. The target of the POWER is to supply an integrated and optimal deployment solution for an actual application.