Why impossible here?

Study: Daylight saving time a waste of energy

I didn't know this:

The US state of Indiana has 92 counties, but until 2006 only 15 of
them adjusted their clocks for daylight saving time, with the remainder
keeping standard time all year, at least partly to appease farmers who
did not want the change.

That's exactly what people have suggested for Queensland: the South East Corner do daylight saving, but not the rest of the State. The line could easily be drawn through the lightly populated rural stretch between Ipswich and Toowoomba, from the border up to just north of Noosa.

Anyway, Indiana shows that it doesn't save energy there. As you expect, the problem is airconditioning:

Kotchen and Grant's work reinforces the findings of an Australian
study in 2007 by economists Ryan Kellogg and Hendrik Wolff, who studied the extension of daylight saving time for two months in New South Wales and Victoria for the 2000 Summer Olympics. They also found an increase in energy use.

Daylight saving was initially introduced, and has been extended,
because it was believed to save energy, but the studies upon which this
idea was based were conducted in the 1970s. A big difference between
then and the present is the massive increase in the take-up of air
conditioning. In hot periods daylight saving time means air conditioners tend to be run more when people arrive home from work, while in cooler periods more heating is used.

Just give us solar panels to run our airconditioners, and we'll be OK.