June 2023 Operating Report

Monthly Operating Report
June 2023

Contact Energy / Monthly Operating Report
2
»The Customer business recorded:
•Mass market electricity and gas sales of 430GWh (June
2022: 446GWh)
•Mass market netback of $123.07/MWh (June 2022:
$107.68/MWh)
»The Wholesale business recorded:
•Contracted Wholesale electricity sales, including that
sold to the Customer business, totalled 757GWh (June
2022: 751GWh)
•Electricity and steam net revenue of $161.93/MWh (June
2022: $126.00MWh)
•Electricity generated (or acquired) of 672GWh (June
2022: 763GWh)
•The unit generation cost, which includes acquired
generation was $27.28MWh (June 2022: $39.53/MWh)
•Own generation cost in the month of
$26.94/MWh (June 2022: $38.89/MWh)
»Tauhara project progress vs. target for
June2023 was 96% vs. 96%
2
.
»Otahuhu futures settlement wholesale price
for the 4
th
quarter of 2023 (ASX):
•As at 17 July 2023: $97/MWh
•As at 30 June 2023: $97/MWh
•As at 31 May 2023: $94/MWh
»As at17
th
July 2023, South Island controlled
storage was 124% of mean and North Island
controlled storage was 123% of mean
•As at17
th
July 2023, total Clutha scheme
storage was 76% of mean
•Inflows into Contact’s Clutha catchment
for June 2023 were 128% of mean. (May
2023: 158%, April 2023: 94%, March 2023:
135%)
»Contact’s contracted gas volume (including
contracted swaps) for the next 12 months is
13.8PJ
3
For the month of June 2023
Prior periods restated to account for metering costs, previously included within ‘Cost to serve’, have been
reclassified to ‘Electricity direct pass thru costs’ to better reflect the direct nature of these costs and to improve
comparability with the industry.
1
All amounts in this operating report are shown excluding an onerous contract provision for AGS recognized in
December 2022.
2
The progress target for Tauhara follows an S-Curve model in line with standard project management
practice(for large scale infrastructure projects). This will result in more gradual increments in the reporting of
target andactual progress as the project nears completion in Q4 of 2023.
3
Forecast gas volumes as notified by suppliers, actual gas received is dependent on field delivery.
This excludes gas available at AGS.

New Zealand controlled hydro storage against mean
ASX futures settlement
Contact Energy / Monthly Operating Report
3
12 MONTHS
Otahuhu
Benmore
0
500
1000
1500
2000
2500
3000
3500
4000
4500
JulAugSepOctNovDecJanFebMarAprMayJun
GWh
South Island ActualNorth Island Actual
South Island post-market meanNational post-market mean
0
100
200
300
CY23CY24CY25CY26
$/MWh
30/06/202231/05/202330/06/2023
0
100
200
CY23CY24CY25CY26
$/MWh
30/06/202231/05/202330/06/2023

Wholesale electricity pricing
Otahuhu
Contact Energy / Monthly Operating Report
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Benmore
Distribution of wholesale market price by trading periods
0
50
100
150
200
250
JulAugSeptOctNovDecJanFebMarAprMayJun
$/MWh
FY22 BENFY23 BENFY22 OTAFY23 OTA
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Jun-23Jun-22May-23
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Jun-23Jun-22May-23

Contact Energy / Monthly Operating Report
5
Total national demand
Regional demand change (%) on June 2022
»New Zealand electricity demand was up 0.3% on June 2022 (up 0.5% on
June 2021)
Source: Contact and Electricity Authority grid demand (reconciled) http://www.emi.ea.govt.nz
FY21, 22 and 23 respectively
Regional demand is excluding NZAS
The nationwide
average temperature
for June 2023 was
10.1ºC, 0.2ºC warmer
than June 2022: 9.9ºC
2%
11%
(1%)
(1%)
(3%)
(3%)
(2%)
1%
(5%)
(1%)
3%
(0%)
3%
5%
3%
11%
(0%)
6%
-
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
JulAugSepOctNovDecJanFebMarAprMayJun
GWh
NZASSouth Island (exc. NZAS)North Island

Wholesale
Contact Energy / Monthly Operating Report
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Retail
Generation mix, gross sales position and unit generation cost (FY22 and 23
respectively)
Retail sales volumes and netback (FY22 and 23 respectively)
-
20
40
60
80
100
120
140
0
100
200
300
400
500
600
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
$/MWh
GWh
Mass market electricity salesRetail gas salesNetback
-
10
20
30
40
50
60
70
80
90
100
-
100
200
300
400
500
600
700
800
900
1,000
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
$/MWh
GWh
GeothermalHydroThermal
Acquired generationContracted electricity salesUnit generation cost (RHS)

Contact Energy / Monthly Operating Report
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Measure
The month ended The month ended The month ended Twelve months endingTwelve months ending
June 23June 22May 23June 23June 22
RetailMass market electricity salesGWh354 360 307 3,481 3,442
Retail gas salesGWh76 86 56 713 780
Mass market electricity and gas salesGWh430 446 362 4,194 4,222
Average electricity sales price$/MWh266.09 248.71 279.34 269.20 252.50
Electricity direct pass thru costs$/MWh(114.17)(111.56)(124.16)(121.39)(117.99)
Cost to serve$/MWh(14.21)(13.28)(16.34)(16.50)(16.14)
Customer netback$/MWh123.07 107.68 127.11 117.92 105.40
Energy cost$/MWh(151.15)(119.04)(146.62)(121.20)(101.34)
Actual electricity line losses%7%6%8%7%7%
Retail gas salesPJ0.3 0.3 0.2 2.6 2.8
Electricity ICPs#428,000 431,500 426,500 427,500 422,000
Gas ICPs#70,000 71,000 70,000 70,000 68,500
Broadband connections#86,000 71,000 85,000 79,000 62,500
WholesaleElectricity sales to Customer businessGWh382 382 334 3,727 3,689
Electricity sales to Commercial and IndustrialGWh107 122 127 1,577 1,454
Electricity CFD salesGWh268 247 281 2,375 2,972
Contracted electricity salesGWh757 751 741 7,678 8,114
Steam salesGWh20 18 31 587 595
Total electricity and steam net revenue
1
$/MWh161.93 126.00 130.02 110.88 101.57
C&I netback (at the ICP)$/MWh144.05 138.29 131.01 118.99 99.93
C&I line losses%4%8%4%4%5%
Thermal generationGWh19 165 18 439 1,046
Geothermal generationGWh276 277 269 3,185 3,283
Hydro generationGWh372 318 361 3,919 3,940
Spot electricity salesGWh667 760 648 7,544 8,269
Electricity sales – DirectGWh1 2 3 78 81
Acquired generationGWh5114 150 389
Electricity generated (or acquired)GWh672 763 665 7,772 8,739
Unit generation cost (including acquired generation)
2
$/MWh(27.28)(39.53)(29.34)(33.02)(38.65)
Spot electricity purchasesGWh(488)(502)(457)(5,226)(5,062)
CFD sale settlementsGWh(268)(247)(281)(2,375)(2,972)
Spot exposed purchases / CFD settlementGWh(756)(748)(738)(7,600)(8,033)
Spot revenue and settlement on acquired generation (GWAP)$/MWh93.74 159.34 68.91 82.06 137.63
Spot purchases and settlement on CFDs sold (LWAP)$/MWh(95.86)(172.77)(72.50)(89.42)(148.18)
LWAP/GWAP%102%108%105%109%108%
Gas used in internal generationPJ0.2 1.3 0.3 6.2 10.9
Gas storage net movement (extraction) / injectionPJ0.2 (0.9)0.2 3.0 (1.0)
Tauhara progress tracking actual (target)96% (96%)N/A95% (96%)N/AN/A
ContactTotal customer connections#590,000 579,000 587,000 582,000 560,000
1
From the month of June 2023 onward, Contact has applied updated IFRIC 9 guidance and market making activity is now excluded from operating income (EBITDAF). Prior period adjustments have not yet been made in the operating information. The
impact of the change will be an increase to EBITDAF in FY23 of $20m for the July to May 2023 period (FY22: +$10m).;
2
Unit generation costs are calculated excluding the impact of an onerous contract provision for AGS. The net impact of this onerous
contract on FY23 EBITDAF is provisionally -$113m.
3
Contact recogniseda gain on sale of TeRapa of $7m in June.
7

Contact Energy / Monthly Operating Report
8
Material themeMeasureUnit
Q4 FY23Q4 FY22
Climate Change
Greenhouse Gas (GHG) Emissions from generation assets
1
kt CO
2
-e
83291
GHG intensity of generation
2
kt CO
2
-e /
GWh
0.0430.142
Water
Water Freshwater take
3
Million cubic
metres
0.420.56
Non-consumptive water usage
4
Million cubic
metres
4,7232,855
Geothermal fluid discharge to awa (rivers)
Million cubic
metres
4.274.01
Biodiversity
Native rākau (trees) planted by Contact
5
#
6,7077,947
Pests caught
6
#
7611,154
Community
Community initiatives and organisations supported#
2959
Inclusion and
Diversity
Board
% Women/ %
Men
57% / 43% 57% / 43%
Inclusion and
Diversity
Key Management Personnel
% Women/ %
Men
20% / 80% 20% / 80%
Inclusion and
Diversity
Employee Gender balance
7
% Women/ %
Men
46% / 53%46% / 52%
1
Scope 1 –Stationary combustion. In FY22 stationary combustion was 99.96% of Contact’s total Scope 1 emissions
2
Carbon equivalent from stationary combustion / electricity generated and sold via the spot wholesale market
3
Freshwater taken to support operations at geothermal and thermal
4
Water that flows through our Roxburgh power station and cooling water for our geothermal power stations
5
Does not include DrylandsCarbon/Forest Partners activities
6
Predominantly stoats, rats and possums
7
Includes all permanent, fixed term and casual employees.1.2% and 1.4%unspecified in Q4FY23 and Q4FY22respectively.
Note: This information is updated quarterly (September, December, March, June)

Contact Energy / Monthly Operating Report
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investor.centre@contactenergy.co.nz
contact.co.nz/aboutus/investor-centre
Investors
Shelley Hollingsworth – Investor Relations &
Strategy Manager
contact.co.nz
@ContactEnergy
Linkedin.com/company/contact-energy-ltd
Facebook.com/ContactEnergy
Youtube.com/ContactEnergy
To find out more about Contact Energy
+64 27 227 2429