; (B) peak-time rebates; (C) critical peak pricing; (D) real-time pricing; (E) transactive energy approaches; (F) inverted time-of-use rates; (G) forward-looking charges; (H) peak-coincident capacity network charges; and (I) 3-part rates. (6) Grid flexibility The term grid flexibility means the ability of a power system— (A) from an operational perspective, to respond to changes in supply and demand, such as abrupt changes in load conditions or sharp ramps in generation; and (B) from a long-term planning and investment perspective, to respond to changes in technology, markets and policy, without incurring stranded assets. (7) IoT The term IoT means a set of technologies (including endpoint devices, such as sensors, actuators, management systems, user interfaces, vehicles, machinery, and household appliances) that— (A) are linked via communication networks to enable advanced control and valuable services