VANCOUVER, BC / ACCESSWIRE / March 10, 2020 / Margaret Lake Diamonds Inc. ("Margaret Lake" or the "Company") (TSX.V:DIA)(FKT:M85)(OTCPINK:DDIAF) is pleased to announce specifications for four models of its Vanadium Redox Flow Battery energy storage systems ("VFRB-ESS"), and is now in pre-sales and booking orders for projected 2021 delivery. The Company encourages interested system integrators and utilities to contact them for further details.