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Dive Into Cement Manufacturing Emissions
Over the years, I’ve seen numerous mentions of decarbonizing concrete or cement. Random articles describing the need and means to decarbonize cement include this McKinsey article, this DOE post, and this Canary Media article. Those don’t cut it for me. I set out to explore cement making and why it is so carbon-intensive. But first, some terminology review is advised to differentiate cement from concrete. Growing up, in college, and even post-college, we used the term cement synonymously with concrete. E.g., “cement hands” to describe a guy who couldn’t catch a basketball or football or “cement head” to tell civil engineers. Each of…
Jeff IhnenNovember 28, 2023


Case Studies in Decarbed Electricity
A colleague recommended a podcast, The Diary of a CEO, with Steven Bartlett. I especially resonated with the message from the “Savings Expert” episode dated November 6, 2023. The guest is an author who said, “I write for an audience of one, and that is me.” He calls it selfish writing. “I don’t write for this person or that person or group. I write what I’m interested in and in a way that I think is interesting. I try to solve my own problems. If it will help me, maybe it will help somebody else.” He said the traditional writing…


Freeze on Nuclear Power is Thawing
It seems the laggards are finally realizing the planned energy transition to renewables and battery storage – maybe even throwing in a few million miles of 345 kV transmission lines – will not deliver reliable, affordable power. Miami Herald headline: Half of US at risk of losing power in winter due to strains on power grid. The article notes that “half” is up from a quarter just a year ago. It also reports that during last year’s Christmas Cliffhanger known as Elliot, natural gas generators (the bridge to nowhere) broke down or couldn’t get fuel. I called this shot reverse…