; (iii) the inclusion and use of existing infrastructure; and (iv) the ability to optimize the integration of intermittent renewable energy generation technology and DERs; and (B) establish cost subtargets specific to technologies and applications selected by the Secretary, taking into consideration electricity market prices and what is required to be cost-competitive in specific markets for electric grid products and services. (3) Default target During the period beginning on the date of enactment of this Act and ending on the date on which the Secretary first increases the rigor of cost targets under paragraph (2), the default cost targets to be achieved by the date that is 10 years after the date of enactment of this Act, shall be an 80-percent reduction in the per kilowatt hour all-in installed cost of each energy storage technology class, as determined under paragraph (4). (4) Energy storage technology classifications (A) In general Not later than 1 year after the date of enactment of this Act, the Secretary shall, based on input from the stakeholders described in subsection (i), establish categories of energy storage technologies for the purposes of— (i) updating the cost targets under paragraph (2)