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PennWell Corporation is the world’s leading provider of hydropower and dam-related information. PennWell publishes Hydro Review magazine. Hydro Review covers all aspects of hydropower - new development, pumped storage, dam construction, sustainability, marine hydrokinetics, and operations/maintenance.

PennWell provides a free weekly electronic newsletter highlighting news from the magazine’s website. PennWell owns and organizes HydroVision International, the largest hydro event in the world, and features hydropower in its POWER-GEN events in Russia and Europe.