; or (2) maintain and repair such a system installed using funds from a grant made under this section. (e) Cost-Sharing A local educational agency that receives a grant under this section shall provide, from non-Federal sources, not less than 50 percent of the funds for the total cost of each project funded by such grant. The non-Federal share may be provided in the form of in-kind contributions. (f) Definitions In this section: (1) Elementary school The term elementary school has the meaning given such term in section 8101 of the Elementary and Secondary Education Act of 1965 ( 20 U.S.C. 7801 ). (2) Geothermal heat pump The term geothermal heat pump means a system that provides heating and cooling by exchanging heat directly or indirectly with the ground using— (A) a closed loop system, which transfers heat by way of buried or immersed pipes that contain a mix of water and working fluid; (B) an open loop system, which circulates ground or surface water directly into the building and returns the water to the same aquifer or surface water source; or (C) a food grade plate heat exchanger to transfer heat between a municipal or private potable water supply system and a closed interior loop employing heat pumps, in which the potable water utilized could be returned to the municipal or private supply system after passing through the heat exchanger. (3) Local educational agency The term local educational agency has the meaning given such term in section 8101 of the Elementary and Secondary Education Act of 1965 ( 20 U.S.C. 7801 ). (4) Renewable energy The term renewable energy means energy generated from— (A) a renewable energy resource, as defined in section 403(2) of the Renewable Energy Resources Act of 1980 ( 42 U.S.C. 7372(2) ); (B) geothermal resources, including a geothermal heat pump