An Hour, A Day, A Month in the Life of a BPA Load Following Customer

Kurt Conger Director of Power Supply, Transmission

and Regulatory Policy Northern Wasco County PUD

Profile of NWCPUD • NWCPUD serves 9,900 retail customers in Northern Wasco

County • Load Following PF Customer – BPA Balances Load Variations • FY16 TRL = 83.715 aMW • FY16 RHWM = 64.133 aMW • 1 Existing Resource – McNary Fishway 50% Share = 4.404

aMW • ARHWM = 15.178 aMW • 1 New Non-Federal Resource: 15 MW market purchase • 5 MW hydro at The Dalles Fishway: output sold to PGE LTF • Five member governing board that sets policy and rates

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Transmission

• BPA NT Customer – Dedicated Network Resources at MNF and MIDC – Scheduled using the ISAAC Portal (BPAP)

• PTP Reservation for TDF: 6 MW • Real Power Losses Provided by BPA Power

through enabling agreement and confirm • NWCPUD owns 115 and 69 kV transmission lines

– Provides transfer service for BPAP – Receives revenue from BPAT for use of 115 kV

backbone as network facilities

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The Dalles Dam

Celilo Converter Station

NWCPUD Diversified Load:

NWCPUD Powerflow Test Cases

Discovery

SPEARFSH

MW 2 0 Mvar

4 MW

1 Mvar

BIG EDDY

A

Amps

DISCV NWA

Amps

SEUFERTA

Amps

MW 6 2 Mvar

CHEIGHTSA

Amps

MW 16 5 Mvar

3MILE TPA

Amps

THREEMIL2ND ST

A

Amps

MW 19 6 Mvar

THE DALS

A

Amps

A

Amps

MW 8 2 Mvar

3.600 MW 1 Mvar

ar

BIGEDDY1

A

Amps

A

MVA

BIG EDDY

BIGEDDY2

TDA PH3

ENDERSBY

A

Amps

2.500 MW 1 Mvar

JOH

CELILO1

CELILO2

BIGEDDY3

MAUPIN

TDA PH4

LYLE TA

Amps

A

Amps

A

mps

DUFUR

A

Amps

1.700 MW 1 Mvar

7MILE

A

Amps

HARVALUM

PINE HOL

A

Amps

1.500 MW

0 Mvar

TYGH VSW

A

Amps

0.900 MW

0 Mvar

TYGH VLY2.000 MW

1 Mvar

A

Amps

WAMIC

A

Amps

3.100 MW

1 Mvar

A

MVA

A

Amps

HOOD RVR

A

Amps

TDA PH1 TDA PH2

SPRINGCK

71.0 MW

53.2 MW

76.9 MW

6.641 MW

29.7 MW

48.3 MW 54.9 MW

70.4 MW

4.2 MW

70.5 MW

123.9 MW

65 MW 65 MW 223 MW 309 MW

20.2 MW

167.3 Mvar

ER2 MW

A

MVA

1.03 pu

1.04 pu1.04 pu

1.04 pu

1.04 pu

53.1 MW

1.04 pu

1.04 pu

79.1 MW

55.7 MW1.00

120.00 kV

5 MW

1.04 pu

MW 41 23 Mvar

A

Amps

A

Amps

A

Amps

EECLOUSE T

Dalles, The 115 kV Gen130.00 MW

Dalles, The 230 kV Gen1033.40 MW

TDA PH5

A

Amps

0.0 Mvar

TDA PH6

A

Amps

325 MW 171 MW

DEMOSS

Before Operations: Long-Term Planning

• Planning establishes the framework that all short-term operations are conducted to implement or augment

• BPA-NWCPUD Power Sales Agreement, circa 2009 – Until the BP-16 RHWM process, life was only slightly more complicated than the

typical PF customer – For BP-16, Net Requirement exceeded RHWM – Firm, flat power purchases used to meet ARHWM requirements started on

October 1, 2015 – Potential for NLSLs exists – looking at the new NR rate ESS provisions – May embark on VER acquisitions, but not in the near-term

• BPA Transmission – NT Agreement with multiple Transmission Service Requests – Paths:

• BPA Power to NWCPUD NT Load • Non-Federal Resources to NWCPUD NT Load • PTP reservation for sale of The Dalles Fishway output

– NAESB Electric Industry Registry (EIR) entries: NWC, NWC01, NWCTDF, Sources and Sinks

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A Month…

• BPA Bill Reconciliation – A discipline that all customers need to develop – Knowing the derivative of every billing determinant is

essential for long and short-term resource and financial planning

• Load resource schedules in the Integrated Scheduling Allocation After-the-Fact Calculation (ISAAC) Portal – Creates frag tags on the load side that are completed

by the Non-Federal resource – Component of Transmission Scheduling Services (TSS)

in Exhibit F of the BPA Power PF agreement

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A Day…

• Preschedule days are important – Non-Federal generating resources that are variable

need to be adjusted to expected values – BPA Transmission requires Customer Data Entry (CDE)

generation estimates – Alarms occur in preschedule and real-time for

deviations or missing gen estimates

• Done right and Real-Time should be uneventful! – Forced outages are the exception

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An Hour…

• If the Long-Term, Monthly and Daily planning are done well, the hours are only disrupted by unscheduled events – Availability factors for NWCPUD’s hydro units are

typically higher than 98% – Plants trip for abnormal conditions

• Forced outages are handled by on-site operators during business hours and on-call operators after business hours.

• CDE and e-Tag quantities may need to be adjusted to minimize generation imbalances

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Prospective Issues

• Energy Efficiency and Conservation – Conservation Potential v. NWPCC expectation

• Demand Response – theory and practice • Distributed Generation – solar roofs or

community solar? February 2014 • • Marijuana Grow Operations

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NWPCC 7th Plan Energy Efficiency • 1,400 aMW by 2021 • 3,100 aMW by 2026 • 4,500 aMW by 2035

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That’s about 25% of the total regional load that we need to avoid through EE.

Data Centers

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Data Centers

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Marijuana Grow Operations

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New Rules and Regulations

• EPA 111(b) and (d) aka “Clean Power Plan” – NWCPUD has very little exposure to 111(d) rules

governing existing fossil fueled plants. – Under 111(b), governing new plants:

• Can a Load Following customer consider natural gas plants (IC, CT, CCCT) as a future resource?

• Does nuclear power have a future in this context? • FERC, WECC and NERC

– Hydro licensing – Deregistration: TO be or not TO be? – BPA’s role as the TO, TP, TOP and all round BA

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BPA Past, Present and Future

• You gotta love ‘em • Guidance through the months, days and hours • Future Concerns:

– Rate competitiveness – New ventures NWPP MC, ISO EIM – Fisheries – Loss of human capital, retirements, – Aging system: hydro, transmission, controls

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Oversupply Quagmire – Does it ever end!

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