John B. Wharton, PE Technical Executive Baltimore, Maryland October 16, 2013 Perspectives on...

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John B. Wharton, PE Technical Executive Baltimore, Maryland October 16, 2013 Perspectives on Grid-Integrated Microgrids Maryland Clean Energy Summit

Transcript of John B. Wharton, PE Technical Executive Baltimore, Maryland October 16, 2013 Perspectives on...

John B. Wharton, PE

Technical Executive

Baltimore, Maryland

October 16, 2013

Perspectives on Grid-Integrated Microgrids

Maryland Clean Energy Summit

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Microgrids in the News

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MicrogridsWhat is a microgrid?

DER

DER

Feeder

Other Feeders

DER

DER

• Interconnected loads and distributed energy resources

• Acts as a single controllable entity

• Connects and disconnects from the grid

Bulk supply connection

Single Customer Microgrid

Distribution Substation

Full Substation Microgrid

Full Feeder Microgrid

Partial Feeder Microgrid

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Why Microgrids?

$-

$0.05

$0.10

$0.15

$0.20

$0.25

$- $2 $4 $6 $8 $10 $12 $14 $16

LCO

E

Price of Natural Gas ($/MMBTU)

LCOE for DG in Commercial Applications

50 kW Microturbine1 MW Industrial Turbine400 kW PureCell200 kW SOFC

Impact of Natural Gas

Resiliency

Remote Power Systems

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Other Drivers for Increased Interest

• Improved Technology

• Opportunities for Combined Heat and Power

• Energy Security

• Public Policy

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What is happening in Japan?

• $32M Subsidy for application of Building Energy Management Systems (BEMS) and Home Energy Management Systems (HEMS)

• Feed in Tariff for PV Applications (approx 40 cents/kwh)

• Residential and commercial storage applications also subsidized (Orix storage leasing program $50/month)

• Electric vehicle charging with two way capability

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Utility Challenge – Integration

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Summary – Where do microgrids fit?

1. The Economics of Local Generation• Optimize energy source based on market • Ability to participate in ancillary services and demand response• Combined heat and power opportunities

2. Additional Benefits of a Microgrid• Continuity of Service – Resiliency

3. Additional Costs and Challenges of a Microgrid• Additional costs and complexity for interconnection and protection• Requirements for safety• Requirements for control and capacity during island operation, and

maintaining power quality8

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EPRI Related Research

• Draft Primer on Microgrid Technology and Applications

• Investigation of the Technical and Economic Feasibility of Micro-Grid-Based Power Systems 1003973.

• Distributed Renewable Energy Generation Impacts on Microgrid Operation and Reliability, 1004045

• Program on Integrating Distributed Generation into the grid

• Program on Energy Storage Systems and Distributed Generation Technologies

• Distribution and Transmission Grid Resiliency

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