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Legislative Assembly for the ACT: 2021 Week 08 Hansard (Thursday, 5 August 2021) . . Page.. 2443 ..


(3) Can the Minister provide a breakdown of ACT institutions (universities, cultural and sports facilities) total gas consumption, in as much detail as possible without breaching commercial in confidence requirements, including any trend data such as declining or increasing usage for (a) percentage for space heating, (b) percentage for water heating, (c) percentage for cooking and (d) trends.

(4) Can the Minister provide a breakdown of ACT commercial total gas consumption, in as much detail as possible without breaching commercial in confidence requirements, including any trend data such as declining or increasing usage for (a) percentage for space heating, (b) percentage for water heating, (c) percentage for cooking and (d) trends.

Mr Rattenbury: The answer to the member’s question is as follows:

Total ACT residential consumption and commercial consumption

The ACT Government collects total annual natural gas consumption figures for the ACT. This data does not further differentiate between residential and commercial consumption.

Gas consumption for the purposes of hot water, space heating and cooking is not separately metered and therefore no consumption figures for specific appliances are available.

The Environment Planning and Sustainable Development Directorate (EPSDD) estimates that approximately 62% of ACT natural gas for 2018-19 was supplied to residential homes and a further 19% to small-to-medium businesses. The remainder of natural gas supplied in the ACT was consumed by 39 large organisations.

EPSDD advice estimates that in 2018-19, 77% of gas use in households was for space heating, 21% for water heating, and the balance was cooking.

In terms of the total Territory consumption and per capita consumption, natural gas consumption has gradually declined over the past three years. The overall decline since 2016-17 has been 6.4% in total and 9.9% per capita.

Year

2012-13

2013-14

2014-15

2015-16

2016-17

2017-18

2018-19

2019-20

Total consumption (TJ)

7,343

6,837

7,297

6,945

7,515

7,226

7,137

7,032

Consumption per capita (GJ)

19.33

17.70

18.62

17.41

18.44

17.38

16.86

16.61

Source: ACT Greenhouse gas inventory for 2019-20, EPSDD

It is important to note that gas consumption is highly seasonal and affected by weather.

The following chart shows that gas consumption peaks during Winter, when Canberra has a maximum natural gas demand primarily driven by space heating demand.

(Graph available at the Chamber Support Office).

ACT Government consumption

From 2016-2020 total natural gas consumption at ACT Government sites decreased by 1%, however, over these four years the total gas consumption varied by ~12%.


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