The Greens are unhappy with National's decision to overturn the previous government's ban on incandescent light bulbs.
Energy and Resources Minister Gerry Brownlee has reportedly instructed the Energy Efficiency Conservation Authority to prepare the paperwork to reverse the ban.
The legislation would have seen incandescent bulbs switched off in October next year.
Green Party co-leader Jeanette Fitzsimons says it's par for the course for National which has opposed every energy efficiency proposal she can think of in recent years.
She says National has set a climate change target of a 50% reduction in Greenhouse Gas Emissions by 2050 but does not seem to have the slightest idea of how it will get there.