A WA parliamentary question addresses the purpose, need, alternatives, and reports related to a 330-kilovolt transmission line installation from Bibra Lake to Cannington. The Minister provides detailed responses, including historical context and offers access to relevant reports.

AnsweredQoN 912Legislative Council
Asked
17 November 2005
Portfolio
Energy

QuestionView source ↗

I understand that Mr McGowan is acting for Mr Carpenter in his absence. I refer to the 330-kilovolt transmission line that is being installed from southern terminal, Bibra Lake to Cannington. (1) What is the purpose of this transmission line, with specific reference to the destination of the power it will carry? (2) When was the need for this line identified and the decision made to build it? (3) At that time, what other alternatives were examined? (4) Does a report comparing these alternatives exist; and, if so, will the government table that report or its summary? Hon KIM CHANCE

AnswerView source ↗

I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(1) What is the purpose of this transmission line, with specific reference to the destination of the power it will carry? (2) When was the need for this line identified and the decision made to build it? (3) At that time, what other alternatives were examined? (4) Does a report comparing these alternatives exist; and, if so, will the government table that report or its summary? Hon KIM CHANCE replied: I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(2) When was the need for this line identified and the decision made to build it? (3) At that time, what other alternatives were examined? (4) Does a report comparing these alternatives exist; and, if so, will the government table that report or its summary? Hon KIM CHANCE replied: I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(3) At that time, what other alternatives were examined? (4) Does a report comparing these alternatives exist; and, if so, will the government table that report or its summary? Hon KIM CHANCE replied: I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(4) Does a report comparing these alternatives exist; and, if so, will the government table that report or its summary? Hon KIM CHANCE replied: I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
Hon KIM CHANCE replied: I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
I thank Hon Simon O’Brien for some notice of the question. (1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(1) The purpose of the transmission line is to reinforce power supplies to the Cannington terminal substation, which provides bulk power to several smaller zone substations in the transmission system that supplies some 100 000 customers. Without the line, power supplies to those customers would be jeopardised. The area served by the Cannington terminal includes the southern and south eastern suburbs, and extends to the wheatbelt. On a side note, this information was supplied to the member in 2003 by way of a letter and brochure. Western Power also offered the member a personal briefing, which he did not take up. Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
Hon Simon O’Brien : As I do not represent the wheatbelt, that is probably understandable. Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
Hon KIM CHANCE : It is a very important part of the world. (2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(2) The need to reinforce the network is ongoing, and the areas served by the Cannington terminal are no exception. Investigation of the options to reinforce the Cannington terminal commenced in the latter part of the 1990s. Western Power was assisted in reviewing options by engineering consultants Sinclair Knight Merz. A number of route options were considered, including building the transmission line from Western Power’s northern terminal substation at Malaga. However, a decision was made in about 2001 to concentrate on route options out of the southern terminal. (3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(3) It became apparent that the only viable route involved the use of the Roe Highway road reserve for the majority of the line’s route. Main Roads Western Australia initially resisted Western Power’s request for permission to locate the line within the Roe Highway road reserve. However, conditional agreement was reached with Main Roads following support from the WA Infrastructure Coordinating Committee in 2002, when it became apparent that the only viable route was the one selected. Numerous route options between the southern terminal and the Cannington terminal were considered and examined during the course of the investigations. (4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.
(4) A number of reports were prepared for Western Power by the engineering consultants Sinclair Knight Merz. Western Power would be happy to provide the member with copies of the report if he wishes.

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