42 engineering design for others in the fields of energy generation; engineering design for others in connection with energy facilities and infrastructure; engineering design for others to evaluate, monitor, manage, control, test, supply condition and convert energy operations, usage, power quality and energy efficiency; energy auditing services; auditing energy usage; energy usage measurement reporting and analysis; technical consulting services in the fields of energy generation; technical consulting services in connection with energy facilities and infrastructure and energy generation; technical consulting services to evaluate, monitor, manage, control, test, supply, condition, and convert energy and energy operations, usage, power quality and energy efficiency