Platts - The Barrel: Oil prices and renewables: time of a separation?

Thirty years ago, amid shocks to world oil markets that produced huge energy price spikes, policy makers began seriously to consider adopting renewable energy. Some sources, such as hydropower, geothermal and biomass, had been around for decades or more, but wind and solar power emerged only in the late 1970s as resources worth developing on a commercial scale in response to crude oil shortfalls.