How Tesla Batteries Are Powering an Energy Revolution. Those Tesla Motors lithium-ion battery packs aren’t just powering electric luxury sports sedans for the 1 percent any more. They’ve started appearing in a small number of California homes to store electricity generated by rooftop solar panels, and businesses that want to cut their utility bills by charging the batteries with a rooftop photovoltaic array and then tap that power when demand—and electricity rates—spike.
dramatic increase in the number of mining proposals. due to a surge in hydrofracking, a technique used by the petroleum industry to extract natural gas and/or crude oil from rock formations, which requires a certain quality of sand in the process. Wisconsin has high-quality sand resources and therefore is seeing a substantial rise in mining permit requests to mine for frac sand. The extracted sand is then shipped out of state to be used at gas and oil fields for hydrofracking.
Petrobras looked like a model for transparency in the energy sector and, with a recent discovery of large offshore deposits, was poised to make Brazil a regional energy superpower. However, a corruption scandal clouds the company, leaving the future of Brazil’s pre-salts in doubt.