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Feb 20
Love67

Progressive Outline to Decarbonize Buildings

By Energy Rant No Comments
Two weeks ago, I described an array of district heating and cooling plants that serve medical, college, industrial, and even city-scale loads. Last week, I explained options to decarbonize district heating and cooling plants. Those options include converting systems from steam to hot water as equipment reaches the end of its useful life, heat recovery chillers, and, most importantly, energy efficiency in facilities and processes served. But before getting started on efficiency, I must add that there are also many barriers to shutting down a district steam plant and transitioning to distributed heating and cooling plants. First, there are loads other than space…
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Dec 13
Love6

Demand Management for Good

By Energy Rant No Comments
The last few posts featured an overview and complete report card on load management to get beyond net zero to real zero, a term I discovered last week. As promised, I will describe some permanent peak load reduction opportunities this week. Like many efficiency solutions, blocking and tackling approaches are the most effective. Peak Load Reduction – New Construction I’m going to stick with some big hitters. A person could write forever on this topic. Home Envelope Single-family homes must be super-insulated to minimize heating loads in cool/cold climates. The cartoon below provides a nice example of super-insulated versus code…
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Nov 01
Love4
Picture of a house with a title that says design an attractive cozy home

Design an Attractive, Cozy Home

By Energy Rant No Comments
Minnesota’s Clean Energy Resource Teams recently published an online article, Things I learned about heat pumps: a homeowner's perspective. I shared this with some folks, and in response, I was asked for general advice on new home construction. I am not a residential efficiency expert, but I performance-specified a new home built for my wife and me back in 2000, and in recent years I side-graded to a smaller home built in 1934. I learned a lot from both experiences. I won’t advise, but I will say what I would do if I were to provide a conceptual design with…
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Aug 16
Love2

Better than Best Programs with Market Transformation

By Energy Rant No Comments
Last week I couldn’t resist responding to the ISO New England’s report, 2021 Economic Study: Future Grid Reliability Study Phase 1 because it paralleled what I wrote a couple of weeks earlier in Electrification At Scale. This week, we’re back to better than best practices in efficiency programs. Last time I described how downstream rebates are often wealth transfers because they are downstream of key decision points and barriers. As I replied to a job candidate who asked me how I would approach a utility to try to persuade them of this, I described how our purpose for being in…
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Jun 27
Love2
elvis presley

Process Optimization – Elvis Gets It

By Energy Rant No Comments
When I was a kid, maybe in junior high, we were assigned a project to describe, step by step, how to make a peanut butter and jelly sandwich. After moment of, “huh,” I understood the task and purpose of the assignment. There isn’t enough of this type of assignment in efficiency programs or business today. On many occasions in recent years, I’ve had to explain how the utility business works, how we handle aspects of our business, or how a program process works. When the receiving end is fully invested in understanding these things as well as they can, both…
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Feb 15
Love0

Specious Beliefs in Code Gods

By Energy Rant No Comments
I received a lot of feedback on last week’s Code Compliance Villains, which described blunders that occurred as part of my high-efficiency boiler installation. Such mistakes would likely erode 50% of the estimated savings claimed in a deemed savings document. Efficiency issues included: Improper outdoor temperature sensor location giving false inputs to the controls. High boiler water temperature setpoints resulting in lower operating efficiency. Heat exchanger piped in parallel, rather than counterflow, resulting in higher boiler water temperatures and less efficiency. The problem with efficient equipment and energy codes is that equipment is tested in the lab, and hands are…
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Oct 12
Love0
Fork in the Road

Middle Actors Take the Fork, Customers Take the Change

By Energy Rant No Comments
When I stick my neck out, it’s often nice to discover others are on board to slow down the machete. I stash potential topics in an electronic pile, and when something triggers a need, I’m ready to go. This time, a co-presenter triggered me as I was delivering an electrification presentation for the Wisconsin Public Utility Institute’s Utilities Basics Course. The co-presenter was Erin Monroe-Nye, who discussed and provided the essentials of energy efficiency programs. Erin described a scenario in which she wanted to install a cold-weather heat pump. She got resistance and a runaround from her HVAC contractor. I…
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May 18
Love0
ice cream

Amazing Refrigerant Facts

By Energy Rant No Comments
Does anyone make ice cream at home these days? That was one of our favorite treats as kids – back when we had three network channels and no recording devices. I’m not going to look into modern ice cream makers for home, but I’ll bet they have cheaters that don’t require ice and salt. Why is salt used with ice to freeze ice cream? Read on to find out. Anyway, I found an early-patented “refrigeration system” (1793) that used ice and salt with charcoal and blankets for insulation. The simple mechanical refrigeration cycle was invented in the early 1900s. Mechanical…
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Mar 24
Love0
buildings

The Simple Recipe to Fail-Safe, Healthy, and Efficient Building Programs

By Energy Rant No Comments
Based on my victims' feedback, I am an above-average cook, but my internal modesty says, barely. To achieve such mediocrity, all you must do is follow the instructions and pay little attention. The next step to greatness, I’ve heard, is to weigh rather than measure things (cups, teaspoons, etc.). No. Thanks. Beyond that probably requires the Malcolm-Gladwell 10,000 hours to achieve excellence as a professional. Designing and constructing buildings is a lot like cooking, and I think most “efficient” buildings are in my categorical class of cooks: mediocre-plus. Unlike great amateur cooks, designers and builders need to be paid for…
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Jan 06
Love0
energy industry predictions

Soothsayer Says: Eight Predictions for the Energy Industry

By Energy Rant No Comments
If it’s worth doing, it’s worth doing now. That quasi-cliché is why I have never had a New Year’s resolution, and I’m not going to start in 2021, but I can review the past and forecast (guess) the future. Soothsaying is part of my job, and I’m at least as accurate as next week’s weather forecast. At the start of 2020, we had just reorganized, defined who we are, what we do, and why we do it. Sounds simple, right? What is your personal purpose? What do you value? What makes you tick? Keeping it concise is very hard. Our…
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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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