I. Introduction
The increasing penetration of distributed energy resources calls for new strategies in system operations for better use and integration of such resources [1]. The National Renewable Energy Laboratory (NREL) report by Palmintier et.al, shows the possible impacts (increased stress on the distribution equipment, energy price volatility, etc.,) of solar PV generation as penetration increases [2]. These could lead to additional costs to non-solar ratepayers and distribution utilities (and also loss of revenue for the latter) [2]. In response to these, multiple distribution utilities worldwide have proposed charges (reduced credits/incentives) to DER owners for using grid infrastructure [3]. Although none of the proposals have been approved by the state utility commissions in the US, it is inevitable considering the trajectory of the future grid. Inappropriate implementation of these new charges could lead to declining DER investment and diverge from federal & state green energy targets [4].