; (C) an electric utility; (D) a nonprofit organization; or (E) a partnership between— (i) a private entity, or a nonprofit organization, that owns critical community infrastructure; and (ii) a State, territory of the United States, Tribal agency, or local government. (7) Environmental justice community The term environmental justice community means a community with significant representation of communities of color, low-income communities, or Tribal and indigenous communities, that experiences, or is at risk of experiencing, higher or more adverse human health or environmental effects. (8) Low-income community The term low-income community means any census block group in which 30 percent or more of the population are individuals with an annual household income equal to, or less than, the greater of— (A) an amount equal to 80 percent of the median income of the area in which the household is located, as reported by the Department of Housing and Urban Development; 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