Unfortunately we need the gas to buy us time to get other energy production technologies on stream.
In many respects the progress with the efficiency of some renewables has been astonishing, even windmills, but they are unlikely to be the whole answer. In other areas, tidal, geothermal and small scale hydro, we have been either lazy or simply written them off without putting any worthwhile research into them. What we have been left with is nuclear.
Deep down everybody knows it. Even some old-school environmentalists have changed their minds, and that is important and interesting. The problem with nuclear is not technical it is psychological. Many of those who are against it are stuck in the CND and Cold War days with the nuclear Armageddon clock on 59h 59m 59s. If those arguments don't work they can always fall back on Three Mile Island, Chenobyl and Fukushima. A lot of this misguided thinking is in the minds of some powerful people who are clever enough to drag the sheeple along with them.
Interesting news came out the other day about a breakthrough in nuclear fusion. The German team produced a helium plasma at 100mºC for 1/10 of a second - millions of times longer than previously achieved. A small, but huge step. The media coverage lasted about as long as the event because there was a Star Wars premier, a rocket launch or something else coming up.