Energy Storage - Wisconsin Public Utility Institute · States with Energy Storage Activities/Goals...
Transcript of Energy Storage - Wisconsin Public Utility Institute · States with Energy Storage Activities/Goals...
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Energy StorageWPUI Conference
June 25, 2019
Carter Scott – Ranger Power
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Energy Storage
• Technology, Design and Configuration• What technologies provide energy storage?
• How is an energy storage system configured?
• How is an energy storage system connected?
• Market Participation, System Savings and Project Revenue• Why do we want to add an energy storage into the Market?
• What revenues can the battery receive from the Market?
• What is happening today in the Energy Storage Space?• Federal and State Policy and Activities
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Definition of Electric Storage Resource
• “A resource capable of receiving electric energy from the grid and storing it for later injection of electric energy back to the grid.”
• “definition is intended to cover ESRs, regardless of their storage medium (e.g., batteries, flywheels, compressed air, and pumped-hydro)”
• “ESRs located on the interstate transmission system, on a distribution system, or behind the meter fall under this definition”
- FERC Order 841 Paragraph 29
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Technology, Design and ConfigurationWhat technologies provide energy storage?
How is an energy storage system configured?
How is an energy storage system connected?
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What technologies provide energy storage?
NREL, 2018
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How is an energy storage system configured?• Example: Lithium Ion
Battery + Solar Facility• 20-40% of the
nameplate of a solar resource when co-located.
• 100 MW Solar facility might have a 30 MW Battery.
• 4-hour run time at maximum output
• 20 MW / 80MWhr Battery
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How is an energy storage system configured?
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How is an energy storage system connected?
• Distributed vs. Transmission System
• Behind or “in front” of the meter
• Independent Location
• Co-located with solar or wind
• Tied into the AC Collection
• Tied into the DC Collection
Project POI
DC Connected“behind” The Inverter
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ESR Operating Characteristics
MISO ESTF
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Market Participation, System Savings and Revenue
Why do we want to add an energy storage into the Market?
What revenues can the battery receive from the Market?
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Arbitrage and System Savings: Energy storage utilizes lower cost energy during low demand to replace higher cost peak energy.
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Typical Load Profile throughout the week.
Source: NREL Energy Storage 101Presentation 8/17/2017
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Typical Load Profile throughout the week.
Add in Solar, and you save on the Energy side (free fuel) but you have just shifted the peak demand to a later hour in the day.
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Typical Load Profile throughout the week.
Add in Solar, and you save on the Energy side (free fuel) but you have just shifted the peak demand to a later hour in the day.
Add in a battery, and you save on both energy and demand, covering the full peak period and actually lowering the peak demand.
Savings on both demand and energy.
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Revenue Streams to Support Storage
• Market Based Revenue• Energy (MWhr)
• Capacity (MW-Day)
• Ancillary Services• Balancing Resource
• Spinning Reserves
• Frequency Response
• Reliability Revenue• Schedule 2 - Reactive Supply and
Voltage Control
• Schedule 33 – BlackstartResources
System CostsGo Down
Project IncomeIncentivizes
Development
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MISO Day Ahead Market Scenario – Energy and Ancillary Services with Oscillating Pricing
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What is happening today in the Energy Storage Space?
Federal and State Policy and Activities
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GTM Storage Deployment Forecast
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Costs
Image Source: NREL
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FERC Order 841 – Energy Storage Resources
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States with Energy Storage Activities/Goals
• Massachusetts• 2017 – DOER Goal 200 MW by 2020
• Study showed benefits:• 1.8GW of Storage
• $970M Cost
• $2.3B System Benefits
• New York• NYPSC Goal 1.5GW by 2025
• New Retail and Bulk Incentives
• Arizona• Smaller storage incentives $1-4M
• Proposal for 3GW by 2030
• California• 1.3GW of Storage
• 500MW of BTM or DG
• By 2025
• Nevada• New Residential and Commercial
Incentive Program
• Oregon• Large utilities required to have 5MW
of storage by 2020
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