Israel to cover all new non

As such, it is lagging behind schedule on its ambitious goal to get 30 percent of electricity from renewables by 2030.

"We have to take some dramatic steps," Eifer said.

These steps mean that the government has ordered regulations to be in place within 180 days to require new non-residential buildings to be equipped with solar panels on their roofs. Last month, the motion was passed at a meeting to pass the state budget.

Experience in the nation shows that such initiatives can indeed work. Decades ago, the government required residents to use sun-powered water heaters. Today those heaters allow the country to save 8 percent of electricity.

Unfortunately, most of Israel's commercial solar fields have been built in the southern Negev desert, far from the biggest, most populated cities.

"Beyond the problem of electricity getting lost in long-distance transit to the country's center, it is important to maintain open spaces. You can't just cover the entire Negev desert in solar panels," Eifer said.

"So we need a mix of ground-based solar, which is cheapest and can be built en masse, and dual-use, which can be built on rooftops directly where there is demand for electricity."

Eifer added that about 60 percent of the new panels would eventually be dual-use, roofing, and generating power.

Environmental campaigners were happy with the new solar policy but argued that more must be done.

So far, they have been critical of Prime Minister Benjamin Netanyahu's government over ecologically harmful decisions made this year.

Amit Bracha, executive director of the environmental watchdog Adam Teva V'din, told Reuters the mandate was "important news, even if still a drop in the ocean as an incentive for putting photovoltaic installations on roofs."

Bracha also pointed to initiatives such as loans and green bonds offered by developed countries to promote renewable energy as key to achieving broader economic support.

Currently, Israel's government incentives consist of permit exemptions and tax benefits. In addition, small producers are paid a premium for electricity.