Green Course and Greenpeace delivered over 1,000 letters of protest to the national infrastructures planning committee and staged a demonstration outside the building on Sunday to protest plans to build another coal-fired power plant near Ashkelon.
The public has a month to voice its objections to the proposed plans.
The activists brought bags of coal and large banners to express their objections.
The two groups maintain that Israel has other, cleaner ways to produce electricity such as reducing use, alternative energy and all of the natural gas which was found this year off the coast. They contend that another highly polluting coal plant is an air pollution hazard the country can live without.