❓ A WA parliamentary question seeks information on the costs, benefits, and potential savings associated with implementing a '5 Star Plus' energy and water efficiency program for new homes. The answer provides cost estimates, payback periods, and projected water and greenhouse gas emission savings.
AnsweredQoN 4987Legislative Council
QuestionView source ↗
(1) What is the average cost of implementing five star plus per new house?
(2) What is the likely pay-off period for five star plus per dwelling?
(3) How much water and energy can be saved per dwelling per annum?
(4) If there were a full roll-out of the five star plus program over the next ten years, how much water and energy could be saved?
(2) What is the likely pay-off period for five star plus per dwelling?
(3) How much water and energy can be saved per dwelling per annum?
(4) If there were a full roll-out of the five star plus program over the next ten years, how much water and energy could be saved?
AnswerView source ↗
Answered
14 August 2007
Responded by
Minister for Local Government representing the Minister for Housing and Works
Response time
47 days
The Department of Housing and Works advises
1) Stage 1 requirement will cost less than $1,000 for most houses.
Stage 2 requirements are currently under development but are anticipated to be around $1,000 for an average house on smaller lot.
Larger houses or houses on lots with large landscape areas will be required to be connected to an alternative water supply such as a rainwater tank, on-site bore or a developer supplied third pipe. Water tanks and on-site bores cost in the range of $2,000 - $3,000, however, there are rebate incentives available that will reduce this cost.
2) For a standard size house, the extra cost of compliance with the new standards will be paid back within five years.
3) 5 Star Plus has the potential to reduce water consumption in an average home by 100 to 140 kilolitres per year when compared to the Water Corporation Domestic Water Use Study 2001.
5 Star Plus is targeted at reducing greenhouse gas emissions rather than energy consumption. It is anticipated that the hot water heating component of 5 Star Plus will save an average of 0.5 Tonnes of CO2 per year per household. This is in addition to energy savings that can be obtained through the energy efficiency provisions of the Building Code for heating and cooling of homes.
4) Over a 10-year period it is estimated that 5 Star Plus standards will result in water savings of 15 million kilolitres in new homes.
In regards to greenhouse gas emissions associated with energy, it is estimated that the hot water heating component of 5 Star Plus will save approximately 475,000 Tonnes of CO2 over a 10 year period.
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1) Stage 1 requirement will cost less than $1,000 for most houses.
Stage 2 requirements are currently under development but are anticipated to be around $1,000 for an average house on smaller lot.
Larger houses or houses on lots with large landscape areas will be required to be connected to an alternative water supply such as a rainwater tank, on-site bore or a developer supplied third pipe. Water tanks and on-site bores cost in the range of $2,000 - $3,000, however, there are rebate incentives available that will reduce this cost.
2) For a standard size house, the extra cost of compliance with the new standards will be paid back within five years.
3) 5 Star Plus has the potential to reduce water consumption in an average home by 100 to 140 kilolitres per year when compared to the Water Corporation Domestic Water Use Study 2001.
5 Star Plus is targeted at reducing greenhouse gas emissions rather than energy consumption. It is anticipated that the hot water heating component of 5 Star Plus will save an average of 0.5 Tonnes of CO2 per year per household. This is in addition to energy savings that can be obtained through the energy efficiency provisions of the Building Code for heating and cooling of homes.
4) Over a 10-year period it is estimated that 5 Star Plus standards will result in water savings of 15 million kilolitres in new homes.
In regards to greenhouse gas emissions associated with energy, it is estimated that the hot water heating component of 5 Star Plus will save approximately 475,000 Tonnes of CO2 over a 10 year period.
Notice: This document is created or edited using unregistered or evaluation copy of rtLib valid for testing or development purposes only. To use it for productive or any other purposes please register it. You may purchase the license on
http://www.rtlib.com
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