Insight and inspiration in turbulent times.
Before the Industrial Revolution, people adjusted their energy demand to a variable energy supply. Our global trade and transport system — which relied on sail boats — operated only when the wind blew, as did the mills that supplied our food and powered many manufacturing processes. The same approach could be very useful today, especially when improved by modern technology.
While the potential of wind and solar energy is more than sufficient to supply the electricity demand of industrial societies, these resources are only available intermittently. To ensure that supply always meets demand, a renewable power grid needs an oversized power generation and transmission capacity of up to ten times the peak demand. It also requires a balancing capacity of fossil fuel power plants, or its equivalent in energy storage.
Asking if renewable energy can replace fossil energy implies that the only possible civilization is our civilization as it is nowadays, including SUVs parked on every driveway and vacation trips to Hawaii by plane for everyone. But keeping these incredibly expensive wastes of energy will obviously be impossible in the future, even imagining that we were able to stay with fossil fuels for another century or even more.
Of course, effective climate mitigation is not assured even if the use of solar and wind power rise. In the absence of solid measures to remove coal, gas and oil from the energy system, fossil fuels could co-exist in an infelicitous equilibrium with renewable energies for decades to come. Pricing out polluting coal through carbon taxation would complement policy designed to boost solar’s share of the global electricity mix.
Many outlooks for a mostly renewable U.S. power grid include a lot more high-voltage transmission lines. But is this a realistic hope, considering how few of these lines we’ve built in recent years, and the many barriers they always seem to face?
How to collect that solar energy, predict it, get it to the right places at the right time, save it up for a rainy day — those are the kind of challenges our massive, spread-out, and unevenly populated country faces as we make the switch to clean energy. And it all comes down to a lesson that the Evslins learned the hard way: It’s not about getting off the grid. It’s about building a better one.
Sometimes the most heated debates are among people who almost agree. That seems to be the case with the recent Jacobson-Clack controversy, in which two groups of well-intentioned, renewable energy advocates bitterly spar over differing paths to a 100% renewable energy future. But as PCI Senior Fellow Richard Heinberg points out in his latest essay, neither side is considering one of the most crucial aspects to successfully reaching that future.
Tim Flannery drops into the studio and we discuss why, and talk about his new book (his second follow up to the highly influential The Weather Makers): Sunlight and Seaweed: An Argument For How To Feed, Power, and Clean Up The World.
But what does the transition mean for residents of Essen and the rest of the Ruhr region — the former industrial coal belt — whose lives and livelihoods have been dramatically altered by the reduced demand for coal? The answer to that could hold some useful lessons for those undergoing similar transitions elsewhere.
British Petroleum (BP) publishes its Statistical Review of World Energy, venting out a few catchy phrases that the mainstream media mindlessly repeats. This time the catch-phrase was: “overall energy consumption is growing faster than renewable energies put together”. This discourse is naturally convenient to those set on promoting fossil fuels and/or detracting renewable energy. But is BP really a trustworthy source on the matter?
It seems clear to me now what SolarAid should do in the next year. We should try to work with enough of those companies and organisations, in clever enough ways, that we play a useful role – maybe a catalytic role, if we can – in ensuring that civilisation passes The Test.
On Saturday, we reported that a leaked draft of Energy Secretary Rick Perry’s grid study obtained by Bloomberg debunks his attack on renewable energy. ThinkProgress has now obtained a copy of that draft, and it has many more surprises — or, rather, findings that are fairly well known to energy experts but may come as an unpleasant surprise to Perry and the White House.
