Phoenix Energy Responsible Business Report 2026

Customer and Network Growth

Carbon Reduction

From laying the first mains and connecting the first customer in 1996, Phoenix Energy’s infrastructure and connection activity has enjoyed a period of significant and continued growth. Connections 1996 – 2025 the number of customers connected to Phoenix Energy )ÆJ ȭ Cumulative connections from 1996 - 2025 )ÆJ ȭ Annual New Connections

As well as the lifestyle and efficiency benefits associated with natural gas, consumers are increasingly moving to natural gas to benefit from its lower carbon credentials. As an inherently cleaner fuel, coupled with replacing older, inefficient systems with a highly efficient gas boiler and associated heating controls, consumers can displace up to 50%* of their home energy carbon emissions by connecting to natural gas.

million tonnes** As a result of switching to natural gas, consumers have cumulatively helped prevent up to of CO2 from entering the atmosphere 15

250,000

9,083

200,000

7,979

CO 2 Avoided (tonnes CO 2 ) Total CO 2 saved from entering the atmosphere by Phoenix Energy users in tonnes.

150,000

6,420

5,562 5,154

4,936

100,000

)ÆJ ȭ Cumulative from 1996 to, and including, 2025

50,000 No. of customers connected

No. of customers connected

16,000,000

0

1996 2000 2005 2010 2015

2020

2025

2020 2021 2022 2023

2024

2025

14,000,000

12,000,000

The continued development of the natural gas network means that the Phoenix network is available to thousands of new consumers each year. There is now more than 4,100km of Phoenix pipeline across the licence area, with a further 20km constructed in 2025.

10,000,000

Tonnes CO 2

8,000,000

Network Build (km) the amount of pipe laid by Phoenix Energy across its network in km

6,000,000

4,000,000

)ÆJ ȭ Cumulative Network Build 1996 - 2025

)ÆJ ȭ Annual Network Build Constructed

2,000,000

4,000

0

83km

1996

2000

2005

2010

2015

2025

2020

78km

3,200

73km

2,400

* Carbon saving figures are based on the installation of a natural gas boiler, the displacement of a household’s oil fired boiler and associated system efficiency gains achieved from system upgrade. Efficiency gains applied are based on the installation of a high efficiency gas boiler and associated high efficient heating controls. An efficiency factor of 30% has been applied that is consistent with the minimum efficiency gains and reduced energy XVH DFKLHYHG DV D UHVXOW RI UHSODFLQJ D 6('%8. ) RLO ERLOHU HIILFLHQF\ UDWLQJ ZLWK D QDWXUDO JDV KLJK HIILFLHQF\ ERLOHU PLQLPXP SHUIRUPDQFH VWDQGDUG RI WKH XSJUDGH RI KHDWLQJ FRQWUROV DQG ZDWHU WUHDWPHQW LPSURYHPHQWV The carbon savings resulting from efficiency upgrades are in addition to the 26% reduction in carbon emissions that natural gas produces compared to home heating oil. The total reduction in carbon emissions from moving to a natural gas high efficiency ERLOHU WKHUHIRUH UHIOHFWV D VDYLQJ RI XS WR ZKHQ FRPSDUHG WR D 6('%8. ) RLO ERLOHU ** Cumulative carbon saving figures are calculated in line with the indicative NI fuel mix each year. New build natural gas connected properties have carbon savings applied compared to likely alternative fuel solution, but do not include any system efficiency gains.

56km

1,600

33km

Build in km

Build in km

20km

800

0

2024

2020 2021 2022 2023

2025

1996 2000 2005 2010 2015

2025

2020

10

Responsible Business Report 2026

Responsible Business Report 2026

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