This is the second of three episodes about the solar-power revolution. Last week, we talked about how solar power got so cheap. This week, we’re talking with someone who is building giant plants around the world to take advantage of all that cheap, intermittent energy.

John O'Donnell is the co-founder of Rondo Energy. John’s problem is this: How do you turn intermittent energy into the cheap, reliable, intense heat that companies around the world need to make everything from steel beams to t-shirts?

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In the past 20 years, the price of solar panels has fallen by more than 97 percent. This extraordinary decline is good news for the world – and it’s transforming the way energy is produced and consumed.

For the next few episodes, we’ll be talking to people who are in the middle of this solar power revolution to find out how it happened, and what it will mean for the world.

Today, Jenny Chase, the author of Solar Power Finance Without the Jargon, tells the story of how solar power got so cheap and where it’s exploding today, and she explains what problems we still need to solve to pull off a worldwide energy transition.

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Paul Reichert is a research scientist at Merck, working on improvements to how we administer drugs to patients. Paul's problem is this: How can you run experiments in space to learn how to make better drugs on Earth?

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