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Climate Now Episode 86

February 13, 2023

Decarbonizing diesel: cleaner fuels and engines

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Featured Experts

BJ Johnson
Co-founder and CEO, ClearFlame

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BJ Johnson

Co-founder and CEO, ClearFlame

BJ Johnson is the co-founder and CEO of ClearFlame, an engine technology company that is transforming heavy-duty diesel engines to run on cleaner fuels. He has a PhD in Mechanical Engineering – Energy Systems from Stanford University.

Chris Cooper
President, Neste US

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Chris Cooper

President, Neste US

Chris Cooper is the President of Neste US. Prior to that, he was their VP of Renewable Aviation. Chris’ background is with the oil and gas industry. He previously worked with Chevron, Phillips 66, and Mercury Fuels.

Matt Leuck
Technical Manager, Renewable Road Transportation, Neste

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Matt Leuck

Technical Manager, Renewable Road Transportation, Neste

Matt Leuck is the Technical Manager, Renewable Road Transportation at Neste. Matt has a background in engineering and sales in the oil and gas industry.

In this Episode

Electrification is going a long way in decarbonizing small vehicles (like passenger cars) in the global transportation sector, which produces about 16% of global emissions. But for long-haul transportation: trucking, shipping and the aviation industries, electrification is far from being technologically ready. Enter a controversial solution: biodiesel. Biodiesel is a fuel derived from organic matter like plants, algae or animal fats, which started to popularize globally just this century. However, early generation biodiesel had its drawbacks: first – they are not a perfect replacement for the fuels used in diesel engines, and can only be used as an additive to fossil diesel: decreasing, but not eliminating carbon emissions. Then there was the fact that clearing forest land to grow crops to make biodiesel could produce more emissions than just using fossil diesel.

Two companies: Neste and ClearFlame, are among a growing cohort of energy producers exploring more sustainable replacements to diesel fuels. We spoke with Chris Cooper and Matt Leuck (Neste) and BJ Johnson (ClearFlame) about the use of renewable liquid fuels, like renewable diesel that is made from organic waste (like spent cooking oil), that can be used as a 100% replacement for fossil diesel in engines. Stay tuned for Climate Now’s next episode, where we explore how renewable diesel is produced, how it compares in terms of environmental impact relative to fossil- and first generation bio-diesels, and how much and how fast the market for renewable diesels could grow. 

Key Questions:

  1. What is renewable diesel? Is it really renewable?
  2. Does renewable diesel have emissions, and how do they compare to fossil diesel?
  3. How is renewable diesel being used today, and how might it’s use expand in the future?
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