Answers.comÂ® is making the world better one answer at a time. The element that makes the strongest material is carbon, and the material which is made is graphene. Thao Hg.
<br /><br /> Solar power is the cheapest renewable energy source for small-scale use, such as pocket calculators, LED lights, and remote (small) electrical appliances. Hydroelectric power is the cheapest renewable energy source for large-scale production. That is, it has the lowest cost to construct and maintain the generating facilities compared to the amount of energy produced.
Renewable Energy Renewable energy is a greener way to produce electricity. The problem is that there is many forms of it available. Some are more reliable than others but they all have something in common. They all significantly reduce greenhouse gasses emissions. The main problem is that they are not constant for very long.