National Fuel Gas Supply

Spring 2021 NGAPresentation

System Overview

Spring 2021 NFGSC System Overview

Weather and Throughput Statistics

• Winter Operations 10/1/20-3/31/21

• Peak Day Throughput 2/7/21 2,528 MMCF

• Peak Day Degree Day 2/7/21 49

• Average Degree Day 2020-2021 30

• Average Degree Day 2019-2020 30

• Normal Degree Day 34

• Throughput 10/1/20-3/31/21 297 BCF

Spring 2021 NFGSC System Overview

Storage Activities

• Top Gas Capacity 77.2 BCF

• Starting Top Gas 10/1/20 71.6 BCF

• Withdrawn through 3/31/21 50.1 BCF

• Top Gas 3/31/21 21.5 BCF

5

0

500

1,000

1,500

2,000

2,500

3,000

1/7/2014 1/7/2015 2/12/2016 1/8/2017 1/5/2018 1/30/2019 2/14/2020 2/7/2021

Off-System

On-System

NFGSC Peak Day Deliveries (MDth)

6

0

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

2012/2013 2013/2014 2014/2015 2015/2016 2016/2017 2017/2018 2018/2019 2019/2020 2020/2021

November 1st April 1st

NFGSC Top Gas Storage Inventory (MMCF)

7

NFGSC Line X South to North

Independence

Leidy

Tuscarora

East Aurora

Niagara

NFG

Ellisburg

Mercer

Holbrook

Concord

8

0

100

200

300

400

500

600M

ar-

20

16

Ap

r-20

16

Ma

y-2

01

6

Jun

-201

6

Jul-

201

6

Au

g-2

01

6

Se

p-2

01

6

Oct-

20

16

Nov-2

016

Dec-2

016

Jan

-201

7

Fe

b-2

017

Ma

r-2

017

Ap

r-20

17

Ma

y-2

01

7

Jun

-201

7

Jul-

201

7

Au

g-2

01

7

Se

p-2

01

7

Oct-

20

17

Nov-2

017

Dec-2

017

Jan

-201

8

Fe

b-2

018

Ma

r-2

018

Ap

r-20

18

Ma

y-2

01

8

Jun

-201

8

Jul-

201

8

Au

g-2

01

8

Se

p-2

01

8

Oct-

20

18

Nov-2

018

Dec-2

018

Jan

-201

9

Fe

b-2

019

Ma

r-2

019

Ap

r-20

19

Ma

y-2

01

9

Jun

-201

9

Jul-

201

9

Au

g-2

01

9

Se

p-2

01

9

Oct-

20

19

Nov-2

019

Dec-2

019

Jan

-202

0

Fe

b-2

020

Ma

r-2

020

Ap

r-20

20

Ma

y-2

02

0

Jun

-202

0

Jul-

202

0

Au

g-2

02

0

Se

p-2

02

0

Oct-

20

20

Nov-2

020

Dec-2

020

Jan

-202

1

Fe

b-2

021

NFGSC Line X South to North

Average Daily Scheduled by Month (MDth)

2021 Construction and Maintenance

10

NATIONAL FUEL GAS SUPPLY

2021 Construction and Maintenance Schedule

Effective Date: 2/17/21

Company Project Description Start Date End Date

Duration

(Days) Location Impact

Expected

Service

Level Impact

Supply

Line EE17 Hydrotest &

Remediations

Hydrotest and pipeline

replacement 04/13/21 05/07/21 25 Line EE17

Olean-area delivery points

unavailable. Critical notice ID

669862. Firm

Supply XS/XE ILI Integrity assessment 04/21/21 04/29/21 4 Lines XS & XE

Concord Station S to N constraint

reduced, primary services

curtailed. Critical notice ID 697925. Firm

Supply

Ellisburg Secondary

Fuel Gas Feed - Z20 Station upgrades May 2021 May 2021 TBD

Ellisburg Station, Line

Z20

Tuscarora receipts and deliveries

limited to primary only. Non-Firm

Supply UNY ILI Improvements ILI improvements 05/03/21 05/12/21 10 Line UNY

Between XN and Vicksburg station

- receipts from DTI RQ Points

limited, deliveries to NFGDC-NY

affected. Critical Notice ID 667892. Firm

Supply UNY ILI Integrity assessment 06/01/21 06/17/21 3 Line UNY

Receipts from DTI RQ Points

unavailable. Firm

Supply Line L Pressure Test Integrity assessment 06/01/21 06/30/21 30 Line L Production shut in. Non-Firm

Supply

YM58 to YM224 Tie-In

- FM100 Project

New pipeline construction and

tie-in to existing pipeline under

FM100 Project (CP19-491-

000) 06/15/21 06/17/21 3

Ellisburg Station, Line

YM224

Line X system outage. Concord

Station S to N constraint reduced

to zero. Firm

Construction and Maintenance Schedule

11

Company Project Description Start Date End Date

Duration

(Days) Location Impact

Expected

Service

Level Impact

Supply

Porterville

Modernization Phase

III Station upgrades

Summer

2021

Summer

2021 TBD Porterville Station

Receipts from DTI RQ Points

unavailable. Receipts from

Pendleton and Deliveries to

NFGDC-XM8 affected. Firm

Supply

Pekin Station

Upgrades Station upgrades Jul 2021 Jul 2021 TBD Pekin Station Pekin receipts unavailable Firm

Supply

Hartzfelt Mtn Station

Upgrades Station upgrades

Jul/Aug

2021

Jul/Aug

2021 TBD Hartzfelt Station Hartzfelt receipts unavailable Non-Firm

Supply

Leidy Transco

Interconnect - FM100

Project

Station upgrades under

FM100 Project (CP19-491-

000)

Jul/Aug

2021

Jul/Aug

2021 14 Leidy Station

Leidy receipts and deliveries

unavailable Firm

Supply

UNY Harris Hill to

Gunnville

Replacement Pipeline replacement 07/19/21 09/20/21 64 Line UNY

Between XN and Vicksburg station

- receipts from DTI RQ Points

limited. Firm

Supply

Ellisburg ESD RCV

Replacement Project Station upgrades Aug 2021 Aug 2021 5

Ellisburg Station, Line

YM53

Leidy receipts and deliveries

unavailable, App Zone 6 receipts

unavailable Firm

Supply

N-12 Ellwood City

OPP Station New regulator station 08/01/21 08/15/21 15 Line N12

Deliveries to PNGCG from Line

N12 limited Non-Firm

Supply NM45/S2T ILI Integrity assessment 09/01/21 09/30/21 3 Lines NM45 & S2T Production shut in. Non-Firm

Supply

Line M ILI Investigation

Digs Post ILI investigation digs Sep 2021 Sep 2021 TBD Line M

Line interruption possible but not

expected None

Supply

YM7/YM52 ILI

Investigation Digs Post ILI investigation digs Sep 2021 Sep 2021 TBD Lines YM7 & YM52

Line interruption possible but not

expected None

Construction and Maintenance Schedule

12

Company Project Description

Start

Date End Date

Duration

(Days) Location Impact

Expected

Service

Level Impact

Supply

Tamarack Compressor

Station - FM100

Project

New Tamarack compressor

station construction and tie-in

to Line YM53 under FM100

Project (CP19-491-000) 09/29/21 09/30/21 2 Line YM53

Leidy receipts and deliveries

unavailable Firm

Supply KPA ILI Improvements ILI improvements TBD TBD TBD

Overbeck Station, Line

KPA Production at Overbeck shut in Non-Firm

Supply

Gunnville Station

Modernization - XN to

UNY Station upgrades TBD TBD TBD Line XN

XN Between Pendleton and

Porterville. Non-firm receipts from

Pendleton and deliveries to

NFGDC-XM8 affected. Non-Firm

Supply

FM100 Abandonment -

FM100 Project

Pipeline abandonment under

FM100 Project (CP19-491-

000) TBD TBD N/A Line FM100 Abandonment of Line FM100 Non-Firm

Supply

Lewis Run Station CP

Upgrades Station upgrades TBD TBD TBD Line KPA

Lewis Run constraint limited to

primary only Non-Firm

Supply

Line UNY Post-ILI

Replacements

Potential pipeline

replacements following Line

UNY ILI TBD TBD TBD Line UNY

Potential outage of Line UNY.

Impact TBD. TBD

Construction and Maintenance Schedule