If you are an energy-modeler or work with one, you have probably wondered if all this extra work is worth the effort. When doing energy models, it seems like you spend more time and money on the model than it could ever be worth, but it only seems that way. Remember, buildings last a long time and they consume about 30% of the energy used in the United States. In other words, energy models pay dividends.
So, the first thing to establish is this: What is the purpose of energy-modeling? Most people will tell you, “It’s to save energy”, but that is over-simplified. Some people will even argue that it does not save energy since it is almost always a ton of work and in fact costs energy. These people are wrong. In the greater scheme of things, energy-modeling will no doubt save energy. The real deal with energy-modeling is that it is used to make good decisions. These decisions are not just about saving building energy/cost, but about making a good building. Simulating a building ahead of time allows designers to “see” what the building will be like for the occupants. So, occupant comfort is a HUGE component of energy-modeling. Time has proven that comfortable occupants pay dividends (less sick days, less time spent away from work, greater productivity, better decision making). In fact, during a buildings life cycle, the cost of the employees is multiple factors more than the cost of the building and the building energy.
Happy people save energy in everything they do: less road rage, better eating, buying locally, spending time outside, and more. Plus, happy people tend to care more about saving energy (did you ever think of that one? It is true). So, proper energy modeling goes a long way.
The next time somebody goes off about how energy modeling is a waste of time, perhaps you should ask if they work in a building that was not modeled ahead of design. Or, possibly, you should consider why they are so disgruntled. Is it really the energy modeling itself? It could be. However, we must consider that this industry is in its infancy. To be honest, even the best software is pretty hard to use and buggy, the building standard are defined pretty poorly, and there are often big political battles for power (I mean, how many green building “non-profits” are there?). These things will clear up in time.
The best thing we can do is push through the growing pains, share information, make a community (like energy-models.com) and work to solve problems with the best solutions - not solutions that our best for us.Even if someday, energy is basically free, we still want to make buildings that do their jobs efficiently - keep people happy, healthy, and fully functioning.
Bob Fassbender is the founder of Energy-Models.com and Fassbender Energy Advisory. A former Trane software engineer and instructor, Bob has more than 20 years of experience in energy modeling, building performance, utility incentives, and energy strategy. His work spans whole-building energy modeling, calibration, independent technical review, decarbonization planning, utility incentive strategy, renewable energy analysis, and owner advisory services. Bob has supported projects ranging from commercial buildings and utility programs to large-scale data center developments involving power infrastructure, geothermal systems, heat recovery, and long-term energy planning. Through Energy-Models.com, Bob has trained thousands of energy professionals in eQUEST, OpenStudio, EnergyPlus, LEED modeling, and building performance analysis. He continues to advise owners, engineers, architects, and developers on energy-related decisions while exploring emerging technologies such as artificial intelligence, machine learning, and advanced building analytics.
Energy-Models.com is a site for energy modelers, building simulators, architects, and engineers who want learn the basics, to advanced concepts of energy modeling. We've got online training courses and tutorials for eQUEST, Trane TRACE 700, OpenStudio, and LEED for energy modeling. All our energy modeling courses are video based. What better way to learn energy modeling software than screen-casts of exactly how things are done?
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