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electricity storage

Nov 11
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MISO Graph

Good, Perfect, and Real Carbon Targets – Finale

By Energy Rant No Comments
In this week's Energy Rant, we're covering the final segment of good, perfect, and real carbon targets.There are two sources of carbon-free energy. First, we have the category of renewable with wind, solar, hydro, and some geothermal. Second, we have nuclear. Oops – third, we have efficiency and demand management. The electricity market is bizarre to me. Last week I crudely explained how the regional transmission authorities (RTO) and their twins, independent system operators (ISO), balance the grid in real-time. Power supplied must match demand with very tight tolerances of voltage and frequency at all times. The chart below shows…
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Nov 04
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RTO and ISO Map

Good, Perfect, and Real Carbon Targets – Part 3

By Energy Rant No Comments
In this week's Energy Rant, we're covering part three of good, perfect, and real carbon targets.In Part I of this series, we examined how various storage technologies work, their pluses, and minuses. In Part II, we put numbers to generation and storage technologies, including maximum power, duration of discharge (for storage), cost per megawatt and megawatt-hour to build and operate, and a slew of other great stuff. In Part III, we will size up the numbers from Part II to actual grid demand. The objective is to provide scale to see what we would need to pair high percentages of…
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Oct 28
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construction cost

Good, Perfect, and Real Carbon Targets – Part 2

By Energy Rant No Comments
In this week's Energy Rant, we're covering part two of good, perfect, and real carbon targets.Last week we looked at grid-scale energy storage options for a couple of them, namely hydrogen and flywheels; I asked, “What could go wrong?” To be fair, my comment on hydrogen was its use as a buoyant gas to float the Hindenburg. Hydrogen, while very light, is explosively combustible, so putting it in a blimp was crazy. I always like to throw factoids in for budding STEM enthusiasts. Take a helium (non-combustible) balloon on a string, hold it by the string in a moving vehicle.…
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Oct 21
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Gas Turbine Generator

Good, Perfect, and Real Carbon Targets

By Energy Rant No Comments
I recently delivered an electrification presentation for Wisconsin Public Utility Institute’s Energy Utility Basics course. While introducing myself, I said, "I’m an engineer, and I can’t help it." I also said the answer to the question, “Can we ___?” is always, “Yes, it’s just a matter of money.” That led me to briefly discuss politicians, with no background in the subject, declare that “we” (state, city, etc.) will be powered by 100% renewable energy by 2050. The universe is between here and there. When I hear that renewable electricity is cost-competitive with conventional sources like combined-cycle natural gas or even…
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Mar 10
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electricity storage - climate change

Innovative Electricity Storage Crushes Batteries; Death Sentence for Duck

By Energy Rant One Comment
I’m not in the electricity storage business, but I can recognize lousy ideas when I see them. Grid-scale battery storage is a bad idea. It will never be anything more than a frequency and voltage regulation technology, although I have to say these are critical functions that batteries can provide. Innovation comes out of left field while everyone else is trying to make a pig fly. And when I see it, I think, “Wow, why did I not think of that?” The Roots of Sound Storage Thermal power generation, particularly from coal, and to a lesser extent, nuclear, have enormous…
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Jul 02
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Excess Power

Electricity Storage by the Other NWA; Chum v Beluga

By Energy Rant No Comments
Energy storage is easy and cheap. Grid-grade electricity storage is complex and expensive. Definitions of energy storage vary. Some consider hot water, chilled water, or ice to be stored energy. It’s really storing the benefits of energy consumption. For phenomenal refreshers and mental strolls down memory lane, see Storing Energy v Storing Benefits and Something Old, Something Old. Why is grid-scale electricity storage so expensive? To answer this question, let’s consider the forms of storage and the hurdles that must be overcome to make it cost effective. Electricity Storage Challenge #1 = Inefficiency First, we have the storage of potential…
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May 23
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dna

Thinking Required; Uh Oh – Effective v Triggering DNA

By Energy Rant No Comments
A year ago, I ranted about the Powerwall, part of Elon Musk’s grand vision of flashy widgets. From that post, I will modify a portion to fit this post: Uber is disruptive. Powerwall isn’t. Powerwall is mostly disruptive to the owner’s bank account. It solves no problem, but it does create new ones. In last year’s post, I assessed the cost of electricity storage via the 7 kWh Powerwall. Over the lifetime of the unit, the cost per kWh would be 11.7¢ per kWh, kWh and installation not included. In other words, the storage alone costs 11.7¢. Imagine if your…
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All things energy. That’s our jam.

We talk a lot about energy – from the serious to the satirical.

All things energy. That’s our jam.

We talk a lot about energy – from the serious to the satirical.

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