1© 2014 Electric Power Research Institute, Inc. All rights reserved.

Mark McGranaghanVice President, Power Delivery and Utilization

NYPSCMay 22, 2014

2© 2014 Electric Power Research Institute, Inc. All rights reserved.

The Vision

AnIntegrated

Grid

3© 2014 Electric Power Research Institute, Inc. All rights reserved.

Integrated Grid Research Gaps

Develop an Assessment Framework

Interconnection Technical

Requirements

Integrated Grid Planning & Operations

Enabling Policy and Regulations

4© 2014 Electric Power Research Institute, Inc. All rights reserved.

Developing the Framework

• Develop a framework for assessing the costs and benefits of the combinations of technology that lead to a more integrated grid

• Ensure consistency in comparison of options

• Build a resource library that will integrate knowledge from demonstrations

Comprehensive Framework: Consistent, Repeatable & Transparent

Scenario Development

Hosting Capacity

Assessment

Distribution Grid Impact/ Technology SolutionsTransmission

System Impact/

Technology Solutions

Cost Benefit Analysis – All Value Streams

Comparison of Scenarios

5© 2014 Electric Power Research Institute, Inc. All rights reserved.

Integration of Distributed Resources

Localized Voltage & Capacity in Long Circuits

Prevalent Overvoltage, Overcapacity &

Protection Issues

Reverse Power FlowReactive Power Balance

Voltage & Frequency Stability

Increasing Re-dispatchTransmission Constraint

Incr

easi

ng

Pen

etra

tio

n L

evel

Distribution Edge

Feeder-level

Substation

Sub-transmission

Transmission

Central Generation Generation Capacity & Ancillary Service

Voltage Support

Loss Reduction

T&D Avoided Capacity

Loss Reduction

Frequency Support

Energy, Capacity & Ancillary Services

Incr

easi

ng

Pen

etra

tio

n L

evel

6© 2014 Electric Power Research Institute, Inc. All rights reserved.

Learning from Germany

Installed Capacity (2013)

Solar

Wind

Interconnection Rules• Responding to frequency

variations• Voltage support• Ride through

Grid Infrastructure Upgrades• ~$27.5B-$42.5B upgrade

Integration with Operations • Communications• Visibility• Coordination of controls

~63GW of Installed Wind and PV – mostly connected to LV

and MV grid

Source: Fraunhofer Institute, Germany

Recent Changes in Germany to Address Concern of Grid Reliability

7© 2014 Electric Power Research Institute, Inc. All rights reserved.

The “Duck” Curve is Real

0

500

1.000

1.500

2.000

2.500

00.0

0

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0

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0

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0

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MW - Lunedì, 30 Agosto 2010

MW - Lunedì, 29 Agosto 2011

MW - Lunedì, 27 Agosto 2012

Source: ENEL – Measured Data from Southern Italy and CAISO analysis

Increased requirement for downward ramping capability in

the morning

More upward ramping capability is required when

sun goes down

Need lower minimum generation levels to avoid over-generation

Not Just Resource Adequacy but the Adequacy of Resource of the Right Type

8© 2014 Electric Power Research Institute, Inc. All rights reserved.

Integrated Planning and Operation

Transmission/ Independent

System Operator (TSO/ISO)

Distribution System Operator (DSO)

Distributed

Energy

Resources

(DER)

Establish technical requirements for transmission-distribution interface in a distributed resource future

• Scheduling

• Real-time balancing

• Integrated markets

• Planning

• T&D operation

• Integrated System Modeling

Requires a coordinated effort among all stakeholders

9© 2014 Electric Power Research Institute, Inc. All rights reserved.

Broad Collaboration Required

Develop an Assessment Framework

Interconnection Technical

Requirements

Integrated Grid Planning & Operations

Enabling Policy and Regulations

10© 2014 Electric Power Research Institute, Inc. All rights reserved.

Thank You!10