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Topic: Renewables

[Episode #49] – Climate Science Part 5 – Business As Usual

Aug 9 2017

Full Episode

When we hear about the emissions scenarios used in the Intergovernmental Panel on Climate Change (IPCC) reports, do we really understand what they’re assuming about future fossil fuel combustion? And what do these emissions scenarios imply about the steps needed to achieve climate policy goals and decarbonize our energy system? For example, when you hear about the worst-case warming scenario known as RCP8.5, do you know that it is based on projections for a 10-fold increase in global coal consumption through the end of this century? Or that many of the estimates of future fossil fuel combustion in these scenarios are based on very old assumptions about how the energy system could develop in the future? And how can we square scenarios like these with our contemporary reality, in which coal is in decline and the world is turning to renewables because they have become the cheapest options for generating power? How should we actually think about the influence that the global energy system will have on the climate over the next century? In this fifth part of our mini-series on climate science, researcher (and Energy Transition Show producer) Justin Ritchie helps us understand what the IPCC scenarios really mean, and how they can be improved to offer better policy guidance.

Geek rating: 5

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[Episode #42] – Can Renewables Power the World?

May 3 2017

Mini Episode

Is the net energy of renewables high enough to actually power human civilization? Or will replacing fossil fuels prove too difficult on an energetic basis? What is the state of the art in net energy analysis, and can biophysical economics yet prove to be policy relevant, and not just an arcane field of study that only interests academics? What’s the trajectory of EROI for various fuels, and what’s the right way to compare them?

If you’ve heard that the net energy of renewables is too low to run society, and that as a result energy transition is destined to fail…then you need to listen to this interview with net energy researcher Rembrandt Koppelaar and check out his new research. His findings will probably surprise you.

Geek rating: 8

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[Episode #37] – Corporate Buyers of Renewables

Feb 22 2017

Full Episode

Although it’s not widely talked about, one of the hottest sectors buying renewables now is the corporate sector. Fortune 500 companies are buying solar and wind power, and renewable energy credits, at a record pace. But why? What’s in it for them? What are the economic risks and rewards of going to the extra trouble to buy green power? How do arrangements like “virtual power purchase agreements” work? How do we manage balancing between wholesale markets in a future of strong interstate corporate procurement? And what’s the outlook for corporate buying of renewables? Our guest answers all of these questions and more in this wonkilicious episode, guaranteed to keep CFOs on the edge of their seats.

Geek rating: 6

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[Episode #29] – Grid Simulation and Wind Potential

Nov 2 2016

Full Episode

What combination of power generators on the U.S. grid produces reliable power at the lowest cost? Or, what’s the most renewable energy that can be deployed at a given grid power cost, and what kind of transmission capacity is needed to support it? How would the U.S. grid be different if it were one, unified grid with more high-voltage direct current (HVDC) transmission capacity? What’s the most productive design for a wind farm? How might weather and a changing climate affect future electricity production from wind and solar farms? And how much renewable power is really feasible on the U.S. grid?

These have been devilishly difficult questions to answer, but now advanced mathematical simulations are beginning to make it possible to answer them much more quickly…and if quantum computing becomes a reality, we could answer them instantly.

In an homage to Comedy Central’s Drunk History, this episode features a conversation conducted over several pints of IPA with a mathematician who recently developed such a simulator while he was working at NOAA (the National Oceanic and Atmospheric Administration) in Boulder, CO. His insights on how the grid of the future might actually function are fascinating, and will likely shatter some of your pre-existing beliefs. It also contains a few nuggets for the serious math geeks out there.

Geek rating: 8

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[Episode #25] – The Energy-Water Nexus

Sep 7 2016

Full Episode

Energy and water are inextricably linked: It takes energy to supply water, and it takes water to supply energy. And those processes consume vast amounts of both. Yet we have only really begun to study the energy-water nexus and gather the data that policymakers will need to understand the risk that climate change poses to both power and water. As rainfall and temperatures continue to depart from historical norms, forcing conventional power plants to throttle back or shut down, we may need to invest more heavily in wind and solar PV just to keep the lights on. Even more radical solutions may become necessary, like switching to more dry-cooled power plants, and desalinating brackish groundwater. Ideally, we would treat the challenges of the energy-water nexus in an integrated way, deliberately reducing our energy and water demands simultaneously as part of our energy transition strategies, but our governments aren’t typically set up for that, and much more basic research and analytical work is needed.

Geek rating: 6

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[Episode #24] – Starting Over

Aug 24 2016

Full Episode

What if we didn’t have to work around the grid we have today, with all of its inertia and incumbents and inflexibility? If we could start over and design the grid from scratch, what would it look like? And once we understood that, how might it change the way we are going about energy transition now, in order to reach that goal more quickly and directly? If what we really want is a grid that is fair, equitable, reliable, efficient, resilient, sustainable, and which serves our climate and social goals, what are the first principles we might work from, and what mechanisms might get us where we want to go? This freewheeling conversation aims to help all of us “think outside the box” a bit more, and imagine what the possibilities might be if we could just start over.

Geek rating: 9

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[Episode #23] – Facts and Falsehoods in Energy Transition

Aug 10 2016

Full Episode

Should we tweak our markets to keep nuclear plants alive, or forget about markets and pay for them another way… and do we really need them at all to keep the grid functioning? Is nuclear power really declining because of overzealous environmentalists, or are there other reasons? Is it possible to balance a grid with a high amount of variable renewables and no traditional baseload plants? Is cost-benefit analysis the right way to approach energy transition? How much “decoupling” can we do between the economy and energy consumption, and how can we correctly measure it? Why are we so bad at forecasting energy and economic growth, and how can we do it better? How will energy transition affect the economy?

We explore all of these questions and more, and try to separate fact from falsehoods in this wide-ranging interview. It might even change your mind about a few things.

Geek rating: 8

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[Episode #22] – Can Economics Guide the Energy Transition?

Jul 27 2016

Full Episode

Is conventional, free-market economic theory really up to the task of energy transition and combating climate change? Can we let the so-called invisible hand of the market guide us through the troubled waters ahead, or will we need firm policy direction and deliberate, top-down planning to secure the best outcomes? How useful can free markets be, in transitioning us away from coal, and meeting our climate targets and securing enough carbon-free power to run our societies? Will they be any help at all in supporting technologies like carbon capture and sequestration, or geoengineering? Can negative discount rates help us pay for climate change mitigation projects? And what does the future hold for oil? We discuss all of these questions and more with veteran energy editor Ed Crooks of the Financial Times.

Geek rating: 6

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[Episode #21] – The Role of Development Banks in Energy Transition

Jul 13 2016

Full Episode

Multilateral Development Banks (MDBs) like the World Bank, the African Development Bank and the Asian Development Bank are publicly committed to ending energy poverty and enabling energy access to the developing world. But their conventional processes and approaches to risk management make it difficult for them to invest in the decentralized renewable energy solutions that have the best chance of lifting people out of energy poverty. So what can be done about it? To find out, we talk with a pioneer in the energy investment and energy access space and ask her some pointed questions about how development bank funding works, and how it needs to be changed.

Geek rating: 5

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[Episode #20] – Grid Evolution

Jun 29 2016

Full Episode

Utilities face a host of rapid changes in a what used to be a staid business: new business models, changing supply and demand forecasts, new distributed architectures, new types of resources, new participants in the power grid that they don't control…yet they still must maintain a highly reliable power grid that operates within fairly narrow parameters.

Meanwhile, difficult questions remain to be solved, about how we’re going to manage our grid power transition, who the winners and losers will be, what destination we’re headed for, what role consumers and “prosumers” will play in the future, and what our reasons are for executing transition the way we do.

We tackle all of these issues in this wide-ranging, very geeky conversation about the “blocks and squiggles” of the grid of the future. Grid power transition, the rebound effect, energy efficiency, utility business models, cutting-edge grid power management considerations, regulation and rate design, electric vehicles as distributed energy resources… they’re all here.

Geek rating: 10

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