The winning formulaThe oil and gas production business is enjoying good times on the back of high demand, but Pure Energy is investing in the future as well. Ruari McCallion takes a closer look. Time, money and energy sounds like something Albert Einstein would have developed a formula to describe. Superficially simple, like E = MC2, behind it would be calculations and theories that would make your brain hurt. There is, however, a purer simplicity about the relationship between time (T), money ($) and energy (E): TE = $.