Wind-driven Hobart

Hobart Mercury
Monday 20/7/2009 Page: 3

IN a Tasmanian first, a bold plan to install wind turbines on top of Hobart's tallest buildings looks almost certain to get the go-ahead. The Hobart City Council is recommending that line-high turbines on top of the ANZ building, to power the inner city office block, be given the green light. A council report obtained by the Mercury shows the proposal to install the turbines on top of the Elizabeth St highrise received only four public submissions.

Three opposed the development on the basis that it would dramatically change the city's skyline and affect the views of Hobart too much. And one was in favour because of the practical example the turbines would provide in relation to sustainable technology. Despite most submissions being against the turbines, council general manager Nick Heath says in the report the proposal is recommended for approval.

The report will be considered by the city council at its next meeting. The Sullivans Cove Waterfront Authority is yet to make a decision about the installation of similar wind turbines on the roof of the Marine Board building in the historic waterfront area. Both buildings are owned by prominent Hobart developer Robert Rockefeller. Authority chief Hadley Sides said further information was being sought about the noise levels of the turbines.

However, Mr Sides said he believed it was only "minor technical data" that was needed. "But given the building's prominence on the waterfront it is important that any noise issues are investigated fully." he said. The authority's report is expected by next month. It is the first large-scale urban plan for wind turbines in the state, although several businesses in rural Tasmania use windfarm-style windmills for power generation.

Hobart City Council report author Tristan Widdowson said Mr Rockefeller had been approached regarding a possible reduction in height of the support towers. "However, it was stated that due to the adjoining buildings, a reduced height would interfere with wind flow to the turbines and would also be costly for a minimal reduction in the overall height." Mr Widdowson said.

"The wind turbines, although dominant in size, contribute little in bulk to the building due to their design and the white colouring assists in softening the impact of the structures..." The report says the likelihood of bird strike is minimal. Mr Rockefeller was unavailable for comment.