Renewable energy

At one time renewable energy was expensive, but not any more. The cost of solar panels in particular has dropped dramatically.  The cost of wind turbines is also much less expensive.

What is lagging behind is distribution and storage. 

Home storage and mass storage batteries are becoming less expensive and their capacity increasing. I am sure with proper investment these could be dramatically improved. Give it a few years. Already 9% of the world's energy comes from solar panels. My guess is this will be over 50% in 10 years.

If storage and distribution also advance, I think we are on the foothills of a major revolution. Imagine energy that does not pollute! We are not there yet, but it is coming.

Oh of course climate change is fake news according to the US president!! Silly me 😄. Unless the USA wakes up, it is in danger of being left behind in a major way.

See https://en.wikipedia.org/wiki/Renewable_energy

Storing renewable energy

Often you hear that renewable energy is OK, but what happens when there is no sun for solar panels or no wind for wind farms?

These are fair comments. Of course, this energy could be stored in chemical batteries, but people are looking for other solutions. One of these might be using old mines for gravitational energy storage. Around the world there are millions of abandoned mines. 

As technology improves, I am sure solutions will be found.

Storing intermittent grid energy - NOT amateur radio

This is the "holy grail" of renewable energy. These days solar and wind energy are cost effective, but they are not always there when you need them. Crack storage and renewables will be the way to go. There just may be an answer. At the moment this is an MIT project.

Steve G1KQH may have to close his eyes!

See https://www.elektormagazine.com/news/molten-silicon-stores-excess-grid-energy?utm_source=Elektor+International+%28English%29&utm_campaign=afd6eb7863-EMAIL_CAMPAIGN_12_13_2018_11_34&utm_medium=email&utm_term=0_23bd160f48-afd6eb7863-234067237&mc_cid=afd6eb7863&mc_eid=b5d6dac1e2