Category Archives: Energy

the posts in this category used to be in “Energy in A Nutshell” at my former web site.

Hibernating freeze-thaw molten salt batteries for seasonal energy storage

Posted on November 25, 2022 by

Preface.  A 100% renewable grid can’t happen without long-term energy storage. Today that’s done with natural gas (with a little help from hydropower in the 10 states that have most of it). Meanwhile nuclear and coal chug along at a … Continue reading →

Posted in Battery - Utility Scale, CSP with thermal energy storage, Renewable Integration | Tagged , , , | 1 Comment

Hydrogen hopium: Storage

Posted on October 21, 2022 by

Source: Russel Rhodes (2011) Explosive Lessons in Hydrogen Safety. https://appel.nasa.gov/2011/02/02/explosive-lessons-in-hydrogen-safety/ Preface.  What is hopium? Irrational or unwarranted optimism. An addiction to false hopes. A metaphorical substance that causes people to believe in a false hope (H + opium). And Hopium … Continue reading →

Posted in CAES Compressed Air, Drought & Collapse, Electric & Hydrogen trucks impossible, Hopium, Hydrogen, Trucks | Tagged , , , , , , , | Comments Off on Hydrogen hopium: Storage

Hydrogen hopium: green hydrogen from water

Posted on October 14, 2022 by

Additional energy consuming steps not shown: pumping water to the electrolyzer, purifying the water, compressing or liquefying to -423 F, pumping into storage container, the trucks to deliver H to stations costing $75 million each, since pipelines are super expensive … Continue reading →

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How the grid works, why a distributed grid won’t work

Posted on September 23, 2022 by

Preface. This is a book review of Angwin’s 2020 “Shorting the Grid. The Hidden Fragility of Our Electric Grid”. It is a good primer on how the grid works, especially why Volt-Ampere Reactives (VARs) are important and why renewables don’t … Continue reading →

Posted in Blackouts, Blackouts Electric Grid, Distributed Generation, Electric Grid & Fast Collapse, Electricity Infrastructure, Energy Books, Grid instability | Tagged , , , , , | Comments Off on How the grid works, why a distributed grid won’t work

Why mining to make renewables will destroy the planet

Posted on August 26, 2022 by

Figure 1 Landscape of earth after 37% is mined to build renewables Preface. As I wrote in Life After fossil fuels: “Mining spews out acid rain, wastewater, and heavy metals onto land, water, and air (PEBI 2016). One-fifth of China’s arable … Continue reading →

Posted in Alternative Energy, An Index of Best Energyskeptic Posts, Batteries, Climate Change, Electric & Hydrogen trucks impossible, Electric Grid, Energy Books, Peak Critical Elements, Peak Platinum Group Elements, Peak Precious Elements, Peak Rare Earth Elements, Recycle, Recycling | Tagged , , , , , | 1 Comment

Peak lithium makes transportation & electricity storage pointless

Posted on July 29, 2022 by

Preface.  The lithium batteries in cars need electricity to recharge, but the electric grid can’t stay up with just wind and solar, that’s why natural gas is the energy storage today. Nor do pumped hydro or compressed air energy storage … Continue reading →

Posted in Automobiles, Battery - Utility Scale, Electrification, Peak Lithium, Recycle, Recycling | Tagged , , , , , , , | 1 Comment

Why Canadian oilsands will not help solve the energy crisis

Posted on July 16, 2022 by

Preface. I posted this back in 2011, but it is all still true, plus a lot more in my additional posts here. The Canadian oil sands are reputed to be the 3rd largest oil reserve (10%), but they are unconventional … Continue reading →

Posted in Energy, Hazardous Waste, Pollution, Tar Sands (Oil Sands) | Tagged , , , , | Comments Off on Why Canadian oilsands will not help solve the energy crisis

World Peak Uranium Production

Posted on July 9, 2022 by

Preface.  The World Nuclear Association estimates 90 years are left.  Today  67,500 tonnes of uranium are consumed a year world-wide and production in 2020 was 47,731 tonnes (WNA 2021). Sounds a bit peakish, thank goodness for stockpiles and the infinite … Continue reading →

Posted in An Index of Best Energyskeptic Posts, Battery - Utility Scale, CAES Compressed Air, Electric Grid & Fast Collapse, Gen IV SMR reactors, Natural Gas Energy Storage, Nuclear Power Energy, Nuclear spent fuel fire, Nuclear War, Nuclear Waste, Peak Uranium, Pumped Hydro Storage (PHS) | Tagged , , , , , , , | Comments Off on World Peak Uranium Production

David Fridley, LBNL scientist, on why alternative energy won’t save us

Posted on June 24, 2022 by

Preface.  I’ve sought out David Fridley’s insights since I first met him in the Oakland Peak Oil group that formed in 2004.  That group eventually dissolved, but David’s expertise is still sought out by many of us following energy decline. … Continue reading →

Posted in Alternative Energy, An Overview, EROEI Energy Returned on Energy Invested, Net Energy Cliff | Tagged , , , | Comments Off on David Fridley, LBNL scientist, on why alternative energy won’t save us

Dozens of reasons why solar power can’t replace fossil fuels

Posted on June 6, 2022 by

Preface. Last update 2024-6-3. All solar (and wind) do is add to the giant bonfire of burning fossil fuels — which still provide two-thirds of the power for the electric grid. Electricity is just a fraction of how we use … Continue reading →

Posted in Alternative Energy, CSP with thermal energy storage, Photovoltaic Solar, Recycle, Recycling, Solar, Solar EROI, Subsidies | Tagged , , , , , , , , | Comments Off on Dozens of reasons why solar power can’t replace fossil fuels