; and (B) 200 percent of the Federal poverty line. (9) Major urban area The term major urban area means a metropolitan statistical area within the United States with an estimated population that is greater than or equal to 1,500,000. (10) Medical baseline customer The term medical baseline customer means a customer of an electric utility with special energy needs due to a medical condition, including energy needs for— (A) a motorized wheelchair; (B) a ventilator; (C) a dialysis machine; (D) an apnea monitor; (E) an electrostatic nebulizer; (F) a respirator; (G) medication requiring refrigeration; and (H) for a customer with a vulnerable respiratory system, an air cleaning system. (11) Microgrid The term microgrid means an interconnected system of loads and clean energy resources (including distributed energy resources, energy storage, demand response tools, and other management, forecasting, and analytical tools) which— (A) is appropriately sized to meet the critical needs of its customers; (B) is contained within a clearly defined electrical boundary and has the ability to operate as a single and controllable entity; (C) has the ability to— (i) connect to, disconnect from, or run in parallel with the applicable grid region; or (ii) be managed and isolated from the applicable grid region in order to withstand larger disturbances and maintain the supply of electricity to a connected location; (D) has no point of interconnection to the applicable grid region with a throughput capacity in excess of 20 megawatts