The party is committed to support alternative energy investments to find a cleaner alternative to oil.

And higher costs for fossil fuels make more costly clean alternatives more competitive.

Nuclear power is absolutely unnecessary - there are effective clean green renewable alternatives.

The local community board endorsed the plan as a cleaner alternative, but its opponents are not quietly accepting the decision.

But there is a clean alternative which involves the use of special washers, available in kit form.

After leaving Washington, he became involved in efforts to reduce automobile pollution and search for cleaner alternatives to the combustion engine.

That leaves nuclear power as a "clean" alternative to fossil fuels.

Wind is an even cleaner alternative than natural gas.

When it first made its appearance, nuclear energy was advertised as a clean, safe alternative to coal and gas.

Serious research into clean and competitive alternatives to fossil fuels.