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Margaret Lake Announces New Vanadium Redox Flow Battery Models

Corporate Updates

Margaret Lake Announces New Vanadium Redox Flow Battery Models

VANCOUVER, BRITISH COLUMBIA / March 9, 2020 / Margaret Lake Diamonds Inc. (“Margaret

Lake” or the “Company”) (TSX.V: DIA / FKT: M85 / OTC: DIAFF) 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.

“We believe our systems will appeal to a wide variety of system integrators and utilities in the

renewable energy and power distribution markets, as they have been designed for commercial,

industrial, and utility scale operations,” said Jared Lazerson, President and CEO of Margaret

Lake.

The Company’s models now offered for pre-sales are the 25kW / 100kWh and 50kW / 200kWh

long life modules in 20ft and 40ft container format as well as scalable 5kW and 10kW indoor

and outdoor modules. The Company offers utility level modules of 3.6MW / 14.4MWh.

Storage systems are available in 4 and 8 hour capacities. The energy storage systems have

been designed for the commercial, industrial, and utility scale storage for renewables, peak

shaving, and infrastructure applications. Remote management and monitoring are available

for all systems.

VRFB Energy Storage Systems

ELECTRICAL DETAILS

Energy Capacity 100kWh

Nominal Power 25kW

Depth of

Discharge Allowed 100%

Inverter Capacity 25kW

Output Voltage : 415V/3phase/50Hz/60Hz

Cycle Life >15,000

KORID

WARRANTY

DC-DC Efficiency 78%

Figure 1 - Inside view of 20 foot

container

Cycle Efficiency 75%

AC-DC-AC

Efficiency 70%

ENVIRONMENTAL

Operating

Conditions 0~50℃, @ 90% humidity

Enclosure Rating IP 54

Electrolyte Rating Non - Flammable

Factory

The Company is currently reviewing and completing studies on a limited number of locations

in the North East US for manufacturing. Factory footprint, process flow, equipment and

personnel requirements have been completed for an initial Vanadium Flow Battery Factory with

ELECTRICAL DETAILS

Energy Capacity 200kWh

Nominal Power 50kW

Depth of Discharge

Allowed 100%

Inverter Capacity 50kW

Output Voltage : 415V/3phase/50Hz

(60Hz)

Cycle Life >15,000

KORID WARANTY

DC-DC Efficiency 78%

Cycle Efficiency 75%

AC-DC-AC Efficiency 70%

ENVIRONMENTAL

Operating Conditions 0~50℃, @ 90%

humidity

Enclosure Rating IP 54

Electrolyte Rating Non - Flammable

Figure 2 - 40Ft Container Format

an annual output capacity of 50MW and 200MWh of storage.

Battery Design

The proprietary Vanadium Flow Battery has been developed, tested and is patent protected.

The flow battery design allows for limitation of storage only based on the capacity of the

electrolyte tanks versus the fixed capacity of lithium-ion. The battery is non-flammable and

non-explosive. There is no degradation as a result of cycling, partial charging, or time with a

100% depth of discharge and projected lifetime of 20 years. Battery efficiency is currently

rated at up to 80%. The battery is scalable into the MW-range through simple parallel

connection of multiple units. The systems are shipped in self-contained weatherproof and

securely protected housing. The systems can be managed and maintained by remote or online

maintenance through intelligent battery management. Temperature management and climate

controlled containers eliminates weather impact on energy efficiency.

The battery is composed of four primary components: electrolyte tanks, cell stacks, power

conversion system (including control system, communications, inverter, electrical wiring, etc.),

and pumps / balance of plant equipment (Figure 4). The systems are designed for

containerized deployment in twenty or forty foot containers. The 40ft design has a capacity of

100kW output, 400kWh storage.

Figure 4

Cell Stack

To date four cell stacks have been manufactured including 2.5kW, 5kW, 10kW, and 25kW

(Figure 5). KORID has developed and is currently testing a 50kW cell stack for high usage

industrial and gird scale utility and renewables applications.

Figure 5

Grid Scale Mass Storage

Designs have been completed for a 3.6MW output system (Figure 6) to meet the demand for

grid scale applications. There are a variety of applications to support both renewables and

existing infrastructure as well as energy security. Placing batteries at substations or near high

demand areas reduces need for new infrastructure such as transmission lines, substation

capacity, and traditional power plants or hydro dams. The power is often wasted in the night

only for a lack of battery capacity. Grid scale energy storage systems allow for charging at

night during very low demand times (off peak) and release that energy during the day during

peak demand reducing the need for new transmission lines or power plants. This both

increases overall efficiency and provides backup/standby power for energy security and a

robust and efficient energy infrastructure. The same concept can be applied to time of day

load shifting for renewables.

Figure 6

Joint Venture Transaction

For more information, refer to the Company’s news release dated January 23, 2020. This press

release refers to a joint venture to construct a factory (the “Factory”) in the United States for the

purpose of producing Vanadium Redox Flow Batteries and energy storage systems. The joint

venture is between the Company and KORID Energy of Korea; KORID is partially owned by DST Inc.

(KOSDAQ: 033430). There is a risk that the transaction will not be accepted or that the terms of

the transaction may change substantially prior to acceptance final acceptance by the TSX Venture

Exchange.

Remarks regarding the Joint Venture by Former Maine Secretary of Energy John Kerry and

former New York Governor George Pataki are available at https://youtu.be/KIre7TMNb5k .

About KORID Energy and DST Inc.

KORID Energy is partially owned by DST Inc., a publicly traded company listed on the KOSDAQ

Exchange in South Korea. It operates the following businesses: Automation Machinery, Mining

and Metals Development and Processing, along with other diversified businesses. Its products

and services include energy storage technologies, equipment for the automobile components

industry, food processing equipment, mineral development and processing, rental services,

and others. The company was founded on May 11, 1995 and is headquartered in Changwon-si,

South Korea. For more information visit www.ds-t.co.kr.

About Margaret Lake Diamonds

Margaret Lake Diamonds Inc. (TSX.V: DIA) is a Canadian technology and strategic metals

exploration company focused on construction of Vanadium Redox Flow Battery Factory in the

United States and Vanadium Exploration Globally. The Company continues to maintain an

interest in the Diagras Diamond property located approximately 50km from the Diavik and

Ekati Diamond Mines.

Contact Information

Jared Lazerson

President and CEO

[email protected]

Web: www.margaretlakediamonds.com

System Integrators Contact

Neil Foran

CFO

[email protected]

Neither the TSX Venture nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture) accepts responsibility for the adequacy or accuracy of this

release.

Forward-Looking Statements

This press release contains forward-looking information or forward-looking statements

(collectively "forward-looking information") within the meaning of applicable securities laws.

Forward-looking information is typically identified by words such as: "believe", "expect",

"anticipate", "intend", "estimate", "potentially" and similar expressions, or are those, which, by

their nature, refer to future events. The Company cautions investors that any forward-looking

information provided by the Company is not a guarantee of future results or performance, and

that actual results may differ materially from those in forward-looking information as a result

of various factors. The reader is referred to the Company's public filings for a more complete

discussion of such risk factors and their potential effects which may be accessed through the

Company's profile on SEDAR at www.sedar.com.