The U.S. Energy Information Administration (EIA) has a new report out with projections through 2050. The graphs are worth staring at. Here are some takeaways for me.
- Coal use has crashed from over 20% of energy consumption 10 years ago to around 10% now. The rise in renewable energy mirrors it, from less than 5% to nearly 20%. Natural gas also surged during this period to replace the decline in coal, from around 20 to 30+ percent. Oil just kind of bumps along in the 30-40% range. The projection in 2050 is something like oil 40%, natural gas 35%, renewables 20%, everything else less than 10%.
- The carbon footprint of electric power generation a decade ago was greater than the transportation sector. It has declined significantly (I assume this reflects the substitution of natural gas and renewables for coal), and is projected to continue to decline. The carbon footprint of transportation and industry is projected to remain relatively flat.
- The biggest gains in renewable energy are projected to come from solar. Solar is projected to grow regardless of changes in cost, whereas wind and other sources are shown as more sensitive to cost, meaning if cost is high their share stops growing. I assume this has a lot to do with the cost of solar being pretty low already.
- They show solar energy and battery storage being used extensively to meet peak mid-day demand by 2050.
- Somewhat disappointing and surprising to me, they show electric vehicles sales only slowly displacing a small portion of gasoline-powered (3%?) vehicle sales over the next 30 years. I hope they are wrong about this one.
I can imagine a past world where safe civilian nuclear technology had been used more widely over the last 50 years or so, and we are not in the climate mess we are in today. Maybe this is even a world where the proliferation of nuclear weapons is less prevalent, but I am not sure about that. This is not the world we live in.
I can imagine a near-future world where homes, businesses, industry, and vehicles are increasingly electrified, and electricity generation is increasingly shifted to renewables. I still think nuclear power might be able to play an important role in this world. But it does not seem like we are headed in the direction of this world, at least not quickly enough to avoid a major train wreck. I hope I am wrong.