; (2) energy efficiency, including energy-efficient lighting, heating, ventilation, and air conditioning, air source heat pumps, advanced building materials, insulation and air sealing, and other high-efficiency products and services, including auditing and inspection; (3) grid modernization or energy storage, including smart grid, microgrid and other distributed energy solutions, demand response management, and home energy management technology; or (4) fuel cell and hybrid fuel cell generation. (c) Use of grants An eligible business with— (1) 20 or fewer employees may use a grant provided under the program established under subsection (a) to pay up to— (A) 45 percent of an employee’s wages for the duration of the training, if the training is provided by the eligible business; and (B) 90 percent of an employee’s wages for the duration of the training, if the training is provided by an entity other than the eligible business; (2) 21 to 99 employees may use a grant provided under the program established under subsection (a) to pay up to— (A) 37.5 percent of an employee’s wages for the duration of the training, if the training is provided by the eligible business; and (B) 75 percent of an employee’s wages for the duration of the training, if the training is provided by an entity other than the eligible business; and (3) 100 employees or more may use a grant provided under the program established under subsection (a) to pay up to— (A) 25 percent of an employee’s wages for the duration of the training, if the training is provided by the eligible business; and (B) 50 percent of an employee’s wages for the duration of the training, if the training is provided by an entity other than the eligible business. (d) Priority for targeted communities In providing grants under the program established under subsection (a), the Secretary shall give priority to eligible businesses that— (1) recruit employees— (A) from the communities that the businesses serve