rate (I) In general The term non-baseload output emissions rate means the amount of greenhouse gases emitted into the atmosphere by the applicable grid region for the production of electricity (expressed as grams of CO 2 e per KWh) above baseload. (II) Determination The non-baseload output emissions rate for any applicable grid region shall be determined by the Administrator of the Environmental Protection Agency, in consultation with the Secretary. (iv) Microgrid The term microgrid means an interconnected system of loads and energy resources (including distributed energy resources, energy storage, demand response tools, and other management, forecasting, and analytical tools) which— (I) is appropriately sized to meet the needs of its customers, (II) is contained within a clearly defined electrical boundary and has the ability to operate as a single and controllable entity, (III) has the ability to— (aa) connect to, disconnect from, or run in parallel with the applicable grid region, or (bb) be managed and isolated from the applicable grid region in order to withstand larger disturbances and maintain the supply of electricity to connected critical infrastructure, and (IV) has no point of interconnection to the applicable grid region with a throughput capacity in excess of 20 megawatts. (v) Applicable grid region The term applicable grid region means a set of power plants and transmission lines which are— (I) under the control of a single grid operator, and (II) interconnected to the microgrid. (D) Rounding If any amount determined under subparagraph (B) or subparagraph (C) is not a multiple of 1 percent, such amount shall be rounded to the nearest multiple of 1 percent. (b) Qualified investment with respect to any qualified facility (1) In general For purposes of subsection (a)(1)(A), the qualified investment with respect to any qualified facility for any taxable year is the basis of any qualified property placed in service by the taxpayer during such taxable year which is part of a qualified facility. (2)