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Data Science at StemPhilomathia Forum on Energy and Environment, UC Berkeley, 2017

Puneeth Kalavase, Lead Data Scientist

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About Stem

Intelligent energy storage company operating in the commercial and industrial customer space.

1.3MW2.5MWHLBA ParkPlace

LargestIndoorSystem

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The Economics of Battery Energy StorageRocky Mountain Institutehttp://www.rmi.org/electricity_battery_value

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• C & I Customers pay for Energy and Demand• Peak Demand Charge• Cost per unit (kW) of power• Calculated at the period of

highest demand (peak)• ”How much” and “when” both

matter

Demand Charges 101

E = 500 kWhPmax = 25 kW

E = 500 kWhPmax = 5 kW

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Demand Management

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Aggregation acts as a Virtual Power Plant (VPP) for grid operators during periods of high demand

Behind the Meter Storage: On demand resource for the Grid

Can aggregate idle capacity and offer to the grid

MeanStateofChargeforFleet

MeanStateofChargeforFleet

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Stem: On demand resource for the Grid