The new year dawns full of the promise and perils that the renewable energy industry has grown accustomed — or some cases, inured — to.

In 2018, installed wind and solar farms surpassed the one-terawatt (TW) mark for the first time — a phenomenal milestone from many standpoints, not least for the fact that well over half this worldwide fleet has been powered up in the last five years by sectors that have simultaneously managed to drive down the levelised cost of energy (LCOE) for both technologies to under $30MWh.