Fossil fuels gets the blame but it is unchecked growth and it's reliance on more and more energy is what is causing the problem. Exponential growth of anything, (population "renewable" energy, GDP) is not possible on a finite planet. Unless we ''solve" the planetary overshoot we are in, no amount of renewable anything will save us. 3.5% growth means doubling every 20 years.In 2062 Just when China is getting to its magical net-zero , today's energy consumption of 18 terawatts will be 73 terawatts.