I agree with the first part of your comment, though not the second. From 2000-2013, the share of global energy produced by renewables has only grown by 0.8%[0]. (Fun fact; when Germany started their nuclear phase out in 2011, they replaced the mothballed nuclear plants with new coal power plants, not renewables). There's frankly not enough time to rely on the growth of renewables; it looks like we're stuck with fossil fuels until the bitter end.

Edit: Got the dates wrong.

[0] https://en.m.wikipedia.org/wiki/World_energy_consumption