The Radio Amateur Society of Australia (RASA) has written to the Australian Government radio regulator seeking an increase in output power from 400W to 1kW for advanced class amateurs.

RASA Secretary, Dr. Andrew Smith, VK6AS, produced a research/ background paper on how the issues of higher power at HF and EMR/I/C limits are managed in other countries.

The paper concludes that:

there is no health or occupational health reason preventing power limits for (Australian) Radio Amateurs in the HF/VHF/UHF bands to be increased; and
there is little or no evidence that suggests that an increase in power will increase complaints of RFI.

Complete executive summary and paper - http://vkradioamateurs.org/%EF%BB%BF1-kw-for-advanced-licencees/