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combined heat and power

Feb 13
Love66

Decarbonizing District Steam and Chilled Water Plants

By Energy Rant No Comments
Let's begin with Oxford Dictionary's definition of decarbonization. Noun: reduction or elimination of carbon dioxide emissions from a process such as manufacturing or the production of energy. Last week, I introduced central or district plants that serve multiple buildings with steam, chilled water, and, in many cases, electricity. District plants serve colleges, healthcare, manufacturing campuses, and, in some cases, entire sections of cities. This week, I describe issues and strategies to save energy and decarbonize these plants. As I learned early in my energy efficiency career, it is essential to understand the design logic behind the system before recommending modifications. Steam moves…
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Feb 06
Love64

Decarbonization – An Introduction to District Plants

By Energy Rant No Comments
I would like to see a poll of peoples’ suggestions for decarbonization. My guess is solar panels would be near the top; next, maybe an electric vehicle; after that, maybe electrified appliances and HVAC. Are any of these investments cost-effective? Keeping it simple, are the accrued savings over the life of the project or object more than the cost? It depends on the baseline alternative and various stackable incentives. Without guessing and getting into details, I believe consumer electrification and decarbonization are driven more by non-financial matters. What about commercial and industrial facilities? It gets decidedly more challenging because the…
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Apr 14
Love0
US Energy Consumption

Combined Heat and Power – a Serious Decarb Weapon

By Energy Rant No Comments
A few weeks ago, we reviewed electricity storage technologies, barriers, and issues. One storage technology is the lowly lead-acid battery, which forms the backbone of uninterruptible power supplies for data centers. They are inexpensive with readily available materials, are 100% recyclable, and therefore, they get no attention. Why? Elon Musk, the ultimate hype provocateur. What happened to the PowerWall, by the way? Disruption of rational thought? A web search of “annual Powerwall sales” results in nothing but distantly tangential content. Similarly, the utility industry, our industry, other companies, and people chase the flashy objects (squirrel!) to obtain decarbonization targets. Flash…
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May 14
Love0

Utilities – We all Un-Bundle

By Energy Rant One Comment
Our theme the last few weeks has covered technological change, consumer emotions, and irrational ways of thinking. The regulated monopoly and its cost-of-service model will not last forever. Someday it will be replaced. What might that look like? Right after last week’s post, From Crazy to Rational went up, I read Why Electric Utilities Should Replace Electric Rate Base in Fortnightly. Wow. How fortuitous! Cost-of-Service The cost-of-service model (COS) described in last week’s post, and verified by the Fortnightly article, motivates utilities to provide slightly more business efficiency than government. The COS model sets revenue requirements for utilities by capitalizing…
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Feb 20
Love0

Energy and Demand Resource Soup

By Energy Rant 2 Comments
The AESP 2017 National Conference is in the rear view mirror. While I was, unfortunately, not able to attend many sessions, most of that time was spent talking with a lot of people. I absorbed a lot of information and hopefully some wisdom. This post discusses the increasingly complex and intertwined electric grid. Shifting Role to Grid Managers My findings from the conference jive with a recent article I read in Public Utilities Fortnightly (PUF). The subject of that article was the Power of Innovation, a utility executive’s roundtable that included representatives from Edison International, Exelon, Duke Energy, Oncor, Southern…
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May 31
Love0
cannabis

Cannabis – A Big Issue Coming to a Utility Near You

By Energy Rant One Comment
Every kilogram of marijuana produced has a carbon bigfoot print of 4.3 metric tonnes (4.7 tons) of CO2. Marijuana production (U.S) consumes the annual electricity production of 1.7 million homes. Marijuana production consumes 1% of the nation’s electricity, and it’s growing rapidly. Data centers consume 3% of electricity worldwide. Mother Jones reports a growth module that four measly plants consume as much power as 29 refrigerators – probably not even efficient ones at that. Ok. Now that we have some context, you can bet this is a serious post. Public Service Announcement I can’t help but mention that older marijuana…
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Jan 12
Love0

Technology Application – The Crown Jewel

By Energy Efficiency, Energy Rant, Utility Stuff No Comments
As I watched one of the bowl games on New Year’s Day (darned if I can remember which one), the team behind had possession of the ball around mid-field with maybe a minute to go on the clock to score a touchdown and win, or not and lose (behind by four points).  Armchair QB advice: either throw the ball over the middle far enough downfield to be worth the time that will burn off the clock, or chip away with short out patterns to get out of bounds and stop the clock.  So, what is the boneheaded call?  A lateral…
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Dec 22
Love0

Combined Heat and Power Ins and Outs

By Energy Efficiency, Energy Rant 2 Comments
Combined heat and power (CHP) is quite easy to understand from an energy efficiency perspective.  Deploying policies to encourage it is very complex due to a number of things: What fuel type are we saving? What is fair for the utility? What are the public benefits? How should any incentives be derived? CHP Overview In a conventional thermal power plant fired by coal, roughly 20% of the energy is lost to the exhaust in the form of waste heat.  Roughly 45% of the thermal energy is rejected to the atmosphere or body of water – river, lake, or ocean.  This…
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Sep 22
Love0

Utilities and Using Less – Making the Abstract Concrete

By Energy Efficiency, Energy Rant, Utility Stuff 2 Comments
The utility business is fascinating and bizarre to me, and this can only mean I’m a hapless, pathetically boring person.  But that is what it may look like to the uninformed.  It’s like soccer, baseball, or Indy car racing.  If you don’t like these games/sports, you just don’t get it. First off, from business and investor perspectives, utilities are not growth stocks, and they haven’t been for decades.  Essentially, they are like US treasuries.  I learned this in a 1989 personal finance class.  Geezers invest in utilities for the steady dividend.  Clearly, I wasn’t interested in a paltry 7% yield…
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Aug 04
Love0

Electric Vehicles; I’ll Take the Bus, Thanks

By Energy Efficiency, Energy Rant 2 Comments
When consumers are considering the purchase of an electric vehicle, what are they thinking?  Good question. I would be thinking, how can I fully utilize it and what are the limitations?  The limitation nearly anyone would consider include the limited driving range.  What can I do with the 70 mile or so cap between charges?  Obvious (I think) answers include driving to work and running errands around the city.  But there are a boatload of other owner and societal issues no one mentions – not this article from Green Tech Media, which is based on this report from the Edison…
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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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