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.
The cheapest variable deal from the energy giant is now Eon Energy Discount, which will cost Â£1,123.71 per year for the average user (including dual fuel discount).The current cheapest variable deal on the market is First Utilityâs iSave v12, which will cost Â£1,054 per year for an average user.he cheapest variable deal from the energy giant is now Eon Energy Discount, which will cost Â£1,123.71 per year for the average user (including dual fuel discount).