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.
1 The country with the highest energy use per capita is Iceland. 2  A significant part of Icelandâs energy use is thermal energy from naturally occurring volcanic springs.3  Thus this energy is cheap and does not involve burning fossil fuels.he list shows a huge disparity between the highest energy users and the lowest. It is worth bearing in mind: 1  Colder countries understandably have a relatively higher use of energy because more resources are devoted towards heating. 2  Energy producers have a high energy use, partly because energy tends to be much cheaper.