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Practical Observations for Keeping the Lights On:

Connecting the Academic Dots

Richard R. Miller

National Hydropower Practice Leader

HDR Engineering, Inc.

May 4, 2017

ENHANCED REVENUE AND MARKET STRUCTURES

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Inertia – Real or Synthetic???

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How many lawn mower engines equal a diesel locomotive in terms of Inertia and Torque?

??? =

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How many lawn mower engines equal a diesel locomotive in terms of Inertia and Torque?

1 Lawnmower Engine

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How many lawn mower engines equal a diesel locomotive in terms of Inertia and Torque?

100 Lawnmower Engines

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How many lawn mower engines equal a diesel locomotive in terms of Inertia and Torque?

1,000 Lawnmower Engines

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Inertia – Real or Synthetic How can we model it? How can we incentivize providing it?

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Flexibility: Needs and Resources

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Idaho Power Summer Peak Load and Resources

3,245 MW - July 12, 2012

Total Load

Coal

Hydro

Langley

Boise High Temperature 108°

Demand Response

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February 2012 – 1 day Wind Generation

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February 2012 – 3 days Wind Generation

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February 2012 – 7 days Wind Generation

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February 2012 – 14 days Wind Generation

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February 2012 – 29 days Wind Generation

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Wind (blue), solar (gold), and power demand (red) time series data

Flexibility for Short-Term Uncertainty

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FLEXIBILITY POTENTIAL – THE GOLDEN DUCK Demonstrating Hydro’s Flexible Generation

Flexible Hydropower Is a Proven and Widespread Technology!

January 2009

Courtesy of HPPI

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Why Flexibility Matters: Germany as an Example

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FLEXIBILITY: HOW DO WE MEASURE IT?

HOW DO WE INCENTIVIZE IT?

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Defining the Problem:

“ACCESSING SOURCES OF SYSTEM FLEXIBILITY

IS ONE OF THE MOST CRITICAL STEPS IN

ACHIEVING HIGH PENETRATION OF VARIABLE

GENERATION..AT EVERY POWER SYSTEM SCALE” Source: NREL et.al

In addition to capacity, system planners are now concerned about the composition of new capacity

• Ramp rates, minimum stable levels, ability to provide reserves

Increasing the penetration of renewables is going to require improved system

flexibility

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Flexibility Is Key when Energy Sources Are Unpredictable

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Flexibility Is Key when Energy Sources Are Unpredictable

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Optimized and Flexible Energy

Optimize availability

of existing flexible resource.

If necessary, deploy

additional

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FLEXIBILITY: HOW DO WE MEASURE IT?

HOW DO WE INCENTIVIZE IT? • “IN NORDEL IT IS CLEAR THAT SUFFICIENT CAPACITY FROM

HYDRO AND CHP ARE ALREADY DEPLOYED”

• “IN THE IBERIAN PENNINSULA A WELL BALANCED COMBINATION OF HYDRO, PUMPED STORAGE AND CCGTs IS REALIZED..”

• “IN MANY COUNTRIES, IT IS CLEAR THAT THEY HAVE PREPARED THEMSELVES TO OPERATE AS FLEXIBLE POWER SYSTEMS , AS THEY RELY ON STRONG INTERCONNECTIONS AND SELF SUPPLY WITH HYDRO, PUMPED STORAGE AND CCGTs TO PROVIDE SYSTEM FLEXIBILITY”

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Bulk and Distributed Energy Storage Technologies

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Bulk and Distributed Energy Storage Technologies

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Contact Info

RICK MILLER, P.E. SENIOR VP AND NATIONAL DIRECTOR RENEWABLE ENERGY SERVICES HDR Engineering, Inc. 704.248.3686 rick.miller@hdrinc.com