August 2024 Operating Report

Monthly Operating Report
August 2024

2
August 2024 overview
»The Customer business recorded:
•Mass market electricity and gas sales of 456GWh (August 2023:
489GWh)
•Mass market netback of $128.72/MWh (August 2023:
$127.73/MWh)
»The Wholesale business recorded:
•Contracted Wholesale electricity sales, including that sold to
the Customer business, totalled 840GWh (August 2023:
832GWh)
•Electricity and steam net revenue of $204.53/MWh (August
2023: $145.86/MWh)
•Electricity generated (or acquired) of 875GWh (July 2023:
803GWh)
•The unit generation cost, which includes acquired generation
was $80.39/MWh (August 2023: $50.81/MWh)
•Own generation cost in the month of $64.1/MWh (August
2023: $50.5/MWh)
»Te Huka 3 project progress vs. target for August 2024 was 94% vs.
95%
1
.
»Otahuhu futures settlement wholesale price for the 4
th
quarter
of 2024 (ASX):
•As at 5 September 2024: $171.9/MWh
•As at 30 August 2024: $167.4/MWh
•As at 31 July 2024: $293/MWh
»As at 6
th
September 2024, South Island controlled storage was
89% of mean and North Island controlled storage was 80% of
mean.​
»As at 6
th
September 2024, total Clutha scheme storage
was 115% of mean.​
»Inflows into Contact’s Clutha catchment for August 2024
were 100% of mean. (July 2024: 74%; June 2024: 54%, May
2024: 44%).
»Contact’s contracted gas volume (including contracted swaps)
for the next 12 months is 8.3-8.8PJ
2
.
2
This incorporates the lower bound of the range notified by our suppliers as disclosed to the market on 7 April 2024. Of note,
if drilling results and well performance are lower than expected we could see a further reduction to this forecast. The higher
end of the range represents gas that may be put to Contact under the Methanex agreement announced on 13 August 2024.
Note: Mean hydro references on this page are based on the mean of all reported periods
(i.e. both pre- and post-market data), sourced from NZX.
1
The progress target for Te Huka 3 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 projects near completion. Figures rounded to the nearest percentage.

New Zealand controlled hydro storage
against mean / 12 months
ASX futures settlement
Hydro storage and forward prices
3
Benmore
Otahuhu
Contact Energy / Monthly Operating Report
0
200
400
CY24CY25CY26CY27
$/MWh
30/06/202331/07/202430/08/2024
0
200
400
CY24CY25CY26CY27
$/MWh
30/06/202331/07/202430/08/2024
0
500
1000
1500
2000
2500
3000
3500
4000
4500
SepOctNovDecJanFebMarAprMayJunJulAug
GWh
South Island ActualNorth Island Actual
South Island post-market meanNational post-market mean

Wholesale electricity pricing
Otahuhu
Contact Energy / Monthly Operating Report
4
Benmore
Distribution of wholesale market price by trading periods
Wholesale market
0
50
100
150
200
250
300
350
400
450
500
JulAugSeptOctNovDecJanFebMarAprMayJun
$/MWh
FY24 BENFY25 BENFY24 OTAFY25 OTA
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Aug-24Aug-23Jul-24
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Aug-24Aug-23Jul-24

Wholesale
Contact Energy / Monthly Operating Report
5
Retail
Generation mix, gross sales position and unit generation cost (FY24 and 25
respectively)
Retail sales volumes and netback (FY24 and 25 respectively)
Business performance
-
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)
-
20
40
60
80
100
120
140
160
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

Contact Energy / Monthly Operating Report
6
1
This includes market making activity and is reported outside of EBITDAF.
7
Operational data
Measure
The month ended The month ended The month ended Two months endingTwo months ending
August 24August 23July 24August 24August 23
RetailMass market electricity salesGWh383 403 397 780 788
Retail gas salesGWh73 86 75 148 168
Mass market electricity and gas salesGWh456 489 472 928 956
Average electricity sales price$/MWh275.90 264.28 275.53 275.71 265.44
Electricity direct pass thru costs$/MWh(121.69)(108.37)(116.14)(118.86)(110.01)
Cost to serve$/MWh(12.83)(14.13)(14.73)(13.80)(14.15)
Customer netback$/MWh128.72 127.73 130.63 129.69 127.08
Energy cost$/MWh(166.14)(149.25)(183.91)(175.18)(155.26)
Actual electricity line losses%5%6%7%6%7%
Retail gas salesPJ0.3 0.3 0.3 0.5 0.6
Electricity ICPs#443,500 433,500 441,500 442,500 432,500
Gas ICPs#73,500 71,000 73,000 73,500 71,000
Telco connections#111,000 88,000 109,778 110,500 87,500
WholesaleElectricity sales to Customer businessGWh404 430 427 831 844
Electricity sales to Commercial and IndustrialGWh126 118 126 252 230
Electricity CFD salesGWh310 284 281 591 579
Contracted electricity salesGWh840 832 834 1,674 1,653
Steam salesGWh23 21 23 46 43
Total electricity and steam net revenue$/MWh204.53 145.86 174.20 189.42 149.26
C&I netback (at the ICP)$/MWh160.08 150.62 179.81 169.95 152.92
C&I line losses%3%4%4%4%4%
Thermal generationGWh219 254 208 427 452
Geothermal generationGWh393 293 390 784 586
Hydro generationGWh187 253 218 405 549
Spot electricity salesGWh800 800 816 1,616 1,586
Electricity sales – DirectGWh- - - - -
Acquired generationGWh75 3 75 150 6
Electricity generated (or acquired)GWh875 803 891 1,766 1,592
Unit generation cost (including acquired generation)$/MWh(80.39)(50.81)(59.05)(69.62)(46.58)
Spot electricity purchasesGWh(530)(548)(553)(1,083)(1,074)
CFD sale settlementsGWh(310)(284)(281)(591)(579)
Spot exposed purchases / CFD settlementGWh(840)(832)(834)(1,674)(1,653)
Spot revenue and settlement on acquired generation (GWAP)$/MWh465.77 138.63 355.88 410.32 126.17
Spot purchases and settlement on CFDs sold (LWAP)$/MWh(480.85)(145.50)(376.61)(428.90)(132.96)
LWAP/GWAP%103%105%106%105%105%
Gas used in internal generationPJ1.6 2.0 1.6 3.1 3.5
Gas storage net movement (extraction) / injectionPJ0.3 (0.6)(0.7)(0.5)(0.7)
Progress tracking actual (target) for Te Huka 3%94% (95%)N/A92% (93%)94 (95%)N/A
ContactTotal customer connections#632,000 598,000 629,000 630,500 596,000
Realised gains / (losses) on market derivatives not in a hedge relationship
1
$m(11.44)(0.13)(3.35)(14.79)(3.26)

7
Material themeMeasureUnit
Q4 FY24Q4 FY23
Climate Change
Greenhouse Gas (GHG) Emissions from generation assets
1
kt CO
2
-e
250
83
GHG intensity of generation
2
kt CO
2
-e /
GWh
0.115
0.043
Water
Freshwater take
3
Million cubic
metres
0.600.42
Non-consumptive water usage
4
Million cubic
metres
3,4334,723
Geothermal fluid discharge to awa (rivers)
Million cubic
metres
5.154.27
Biodiversity
Native rākau (trees) planted by Contact
5
#
6,017
6,707
Pests caught
6
#
903
761
Community
Community initiatives and organisations supported#
3329
Inclusion and
Diversity
Board
% Women/ %
Men
43% / 57%57% / 43%
Inclusion and
Diversity
Key Management Personnel
% Women/ %
Men
20% / 80%20% / 80%
Inclusion and
Diversity
Employee Gender balance
7
% Women/ %
Men
47% /52%46% / 53%
Note: This information is updated quarterly (September, January, April, June)
1
Scope 1 – Stationary combustion. In FY23 stationary combustion was 99.94% of Contact’s total Scope 1 emissions. There was more thermal generation in Q4 compared to previous quarters. Tauhara generation began in Q4.
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. There was more thermal generation in Q4 compared to previous quarters, therefore more cooling water required.
4
Water that flows through our Roxburgh power station and cooling water for our geothermal power stations
5
Does not include DrylandCarbon/Forest Partners activities
6
Predominantly rats, possums and hedgehogs
7
Includes all permanent, fixed term and casual employees. 1.5% and 1.2% unspecified in Q4 FY24 and Q4 FY23 respectively. Q4 data now includes Simply Energy employees.
Contact Energy / Monthly Operating Report
Environment, Social and Governance (ESG)

8
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
Contact Energy / Monthly Operating Report
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