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photovoltaic

Jun 06
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demand

Learning Calculus via Demand and Energy

By Energy Rant 2 Comments
Last week, I was commenting on some retro-commissioning findings, and I was considering demand savings estimates versus energy savings estimates. A colleague asked, “If you are aware of any energy versus demand papers I would like to know more.” I was informed that the Association of Energy Engineers coursework for becoming a Certified Energy Manager only skims the surface, using a garden hose as a metaphor, for demand and energy. The flow of water represents the flow of power (kilowatts), and the water represents energy – the sum of power over time. This is a disservice because demand charges can…
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Apr 28
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Utility Death Spiral? The Duck has Your Back

By Energy Efficiency, Energy Rant, Utility Stuff 15 Comments
There is weekly, if not daily, chatter about the end of the monopolistic electric utility systems we have today.  They call it the utility death spiral, and it goes like this: Distributed generation, also known as DG, which includes rooftop solar photovoltaic (PV) systems will compete directly with utility power. Utilities are stuck with fixed rate base for which they need to be paid through purchased energy from customers. Photovoltaic may produce competitively-priced energy for some customers after the bevy of incentives and tax breaks.  Home-generated electricity drives down the utility’s revenue. Utility raises prices to cover their fixed cost.…
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Feb 03
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Jacque – Fix My Car

By Energy Efficiency, Energy Rant No Comments
There is a running joke in our business that electrical engineers don’t know anything about energy efficiency.  It is only a joke.  One of the sharpest energy guys I have interviewed was a physics major who started on the ground floor of an energy efficiency consulting firm filling orders of equipment they also happened to sell.  In 10 years he worked his way up to really understanding how buildings and their complex systems work and he became a manager of a team of energy engineers teaching his group how buildings work and how to model them. This article made laugh…
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Oct 13
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Renewable NIMBY

By Energy Rant, Renewable Energy 2 Comments
"There should be a place for these -- someplace that isn't going to impact families quite so much."  This was a quote regarding wind turbines from a woman in the Wall Street Journal article Renewable Energy, Meet the New Nimby. I laughed out loud for a while when I read this California has a mandate for 33% renewable energy consumption by 2020.  New York: 25% by 2013.  Oregon: 25% by 2025.  These states and similar ones have meager interim targets and/or have meager portfolios today.  Some serious ramp up is required. However, it seems people claim to want it but…
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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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