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design for others in the fields of energy generation, transmission, storage, and distribution of energy commodities; design for others in connection with energy facilities and infrastructure, energy generation, transmission, storage and distribution facilities and infrastructure and consulting services in the foregoing areas; engineering design services of systems, equipment, and processes used in evaluating, monitoring, managing, control, testing, supply, conditioning, and conversion of energy and energy operations, usage, power quality, and energy efficiency and consulting services in the foregoing areas; auditing energy and energy usage; design of systems, equipment, and processes for others in the fields of energy commodity purchases and sales, energy brokering, and energy marketing; energy usage measurement reporting and analysis; consulting services in connection with power plants, energy facilities and infrastructure and the transmission, storage, and distribution of energy