Upside Down Consequence of EE?

5 10 2010

Many posts ago, I wrote “The More You Spend, The More You Save” explaining how poor system control wastes energy but results in even greater energy savings for efficient equipment.  For example, consider an air handling system that wastes heating energy provided by an efficient boiler.  The boiler saves x% versus a conventional model, so x% multiplied by greater use (wasted energy) results in “more” savings.

Recently I picked up on buzz that argues greater efficiency results in greater energy consumption.  At one point I recall reading in the Wall Street Journal an editorial that argued more efficient vehicles just result in people driving more.  They live further from work.  They go on joy rides.  They visit the in-laws more.  I scoffed at this argument, at least at current gasoline costs and anything near them.  If I buy a hybrid that gets 50 mpg versus a “sports car” like an Infiniti G35 coupe that goes half as far on a gallon of gasoline, I will drive more.  No.  Way.

I will drive more (barely) if (1) I have a car that is fun to drive and (2) I am in an area where it is fun to drive.  While I haven’t driven a hybrid, I don’t think it would meet my criteria for #1.  As for #2, western Wisconsin is a driver’s and biker’s paradise because (1) it is scenic (2) there are lots of smooth, paved, and curvy roads on which to drive and (3) there is minimal traffic.  Quite frankly, I’m much more concerned about striking a deer, coon or coyote than another vehicle.  I used to live in the DC metro area.  Forget it.  You might as well drive a tin can because you are going nowhere fast.  I grew up in Southwest Minnesota.  Forget it.  You can drive for miles without moving the steering wheel.  But even so, living here in driver’s paradise, I have limited time so I never, ever think, “ooh boy, a 45 minute drive is only going to cost me $2.79 in gasoline – let’s drive!”

That’s one argument that doesn’t hold water in my opinion.  On the other hand, some people do run efficient stuff like lighting for longer hours because it’s efficient.

The other argument made in these articles is that the money freed up by spending less on energy results in redirection of that extra money toward other goods and services – and those goods and services result in more energy consumption to extract, process, manufacture, transport and operate.  I do buy into the merits of this argument whether the end-user is a homeowner, service provider, or manufacturer.  I never really bought into the notion that energy efficiency programs result in lower revenues for utilities.  Maybe they understand this and hence the rah-rah from utilities for energy efficiency programs.  I don’t blame them.  By far the main driver of EE is saving money and increasing profits.  See “This is Not Tee-Ball“.

Just think how this turns the energy efficiency business and policies on their heads.  In “Paying to Lose,” I discussed how utilities have to make their savings goals or they may get hammered by regulators.  This, in turn, improves the bottom lines of their customers allowing them to expand.  What a racket.  Rather than utilities spending money for their customers to use less of their product, they are actually using their CUSTOMERS’ money to sell MORE of their product.  And how about “Decoupling Stupid,” that allows utilities to recover revenue “lost” to energy efficiency?  They spend their customers’ money to increase sales and meanwhile essentially get reimbursed for the “savings”.  Cool!

We have also discussed the underperformance of LEED facilities.  In “LEED and the NOT Happenin’ Savings,” I described how LEED buildings weren’t meeting energy performance targets because of lousy commissioning.  Well hail to the lousy commissioning agents!  They are actually reducing global energy demand and greenhouse gas emissions.  Now that end user won’t be able to afford a new vehicle manufactured in Ontario with steel from soot belching plants in China shipped across the Pacific, through the Panama Canal to the Gulf of Mexico and transported by rail to Toronto or someplace – and tires from tariff protected Ohio that are shipped to Canada and back to the California border once installed on the automobile.  They also won’t be driving their phantom car.  (California won’t allow the car cross state lines because of the embedded energy, so Los Angeleans have to drive to Reno to pick up their car – I just made that up but it is probably true or at least accurate or emblematic, but certainly driving a new car across state lines into the golden state causes cancer and birth defects like everything else in CA does)

And I consider Michaels Energy.  Our facility uses practically no energy but in recent years our air travel has gone from virtually zero to hundreds of thousands of passenger miles per year.  And from the destination airport, we drive all over the place.  Soon for example, we will have about five people zigzagging all over California verifying energy efficiency measures that probably save less than the gasoline burned to prove it.  Somebody has to do it!

So go ahead and turn that thermostat up, open the window for some fresh air and click on that 70 inch plasma TV, have a beer and save the planet, Homer.

written by Jeffrey L. Ihnen, P.E., LEED AP


From Jack Wagon to Hobo

31 08 2010

A couple weeks ago, the National Academy of Sciences released a study that summarized the findings of the general public’s perceptions of energy consumption and potential savings from various end-uses in their daily lives.  You can check out the curves in the linked article above and take my word for it or risk brain damage reading the thing.  To me there are several significant findings, none of which surprise me.  These are in no particular order and are only a subset of the findings.

  • Finding #1 – When asked open ended questions about ways to save energy, people overwhelmingly selected curtailment measures over efficiency.  Shut stuff off.  Unplug it.  Drive less.  Relax and take it easy (love that one but don’t watch a 56 inch plasma while lying on the couch).  Conserve energy – so the answer to “What is the single most effective thing you can do to conserve energy?” is conserve energy.  I think I would have yelled at them like the Geico drill sergeant.
  • Finding #2 – People can reduce energy consumption by 30% “without waiting for new technologies, making major economic sacrifices, or losing a sense of well-being.”  Well I don’t know about the “making economic sacrifices” part of this.  Viewing average residential end uses of electricity, the easy stuff is lighting and… lighting.  I don’t see anything else on there that doesn’t require sacrifice, more work, or spending a lot of money.  Lighting accounts for 15% of consumption.  Assuming this is all incandescent, replace it all with compact fluorescent for about 2/3 savings, or 10%.  We’re one third the way there.  Space cooling could be reduced a couple percentage points tops without sacrifice, well, make that 0% without sacrifice.  You would have to set your temperature up all the time.  Setting the thermostat up is going to save practically nothing because heat transfer due to temperature differences outside versus inside are relatively small.  Clothes dryers?  You would have to line dry.  That is a sacrifice if you ask me.  The rest you are either going to be able to do very little or a bunch of nickels and dimes will add up to a few percentage points.The only way to get to 30% is to select efficient equipment when replacement is needed anyway.  Throwing away a working furnace and air conditioner with efficient models won’t pay for itself.  Spending extra for an efficient model when you need a new one anyway will.
  • Finding #3 – Turning off the lights when leaving the room is considered by the general public to produce attractive savings.  The paper says there is actually very little savings from this.  Hide the kids and maybe the spouse too!  I’m not buying this one.  The study is 25 years old coincidently.
  • Finding #4 – People relate to curtailment, using things less more than using efficient stuff by a margin of 5:1.  The top three items are turn off the lights, conserve energy (and call the sergeant), and drive less.  If you’ve ever thought of it, efficient vehicles are more efficient, all else equal.  The Mini Cooper get’s great mileage, comes with leather seats, manual transmission, and is one of the best resellers on the market.
  • Finding #5 – People do not understand which things in their home are energy hogs.  They are fairly accurate with light bulbs, stereos, and computers and they actually think laptops use as much as a desktop.  My laptop uses about 25W.  You can barely read the paper by a 25W compact fluorescent light.  What cracks me up is they think the central air conditioner and electric clothes dryer uses only about two or three time more energy than the laptop!  You see that huge hulking plug for the dryer?  The reality is the dryer uses about 100x more energy.
  • Finding #6 – Tuning up your car twice a year saves 100 times as much energy compared to driving 60 mph rather than 70 mph for 60 miles.  First, this is misleading.  My car wouldn’t even use two gallons in that distance for either speed.  Second, who tunes up a car?  That’s from the 1970s and earlier when engine control was mechanical.  Everything is digitally controlled nowadays.  It works or it doesn’t.  I haven’t “tuned up” my car in the seven years I’ve owned it and it gets 34 mpg now like it did when it was new.  Change air filters and keep the tires a few psi below the maximum shown on the sidewall.
  • Finding #7 – People think a truck uses as much energy to move freight as a train does when in reality trucks use about 20 times as much per ton-mile.  This magnitude surprises me.  What’s the difference?  Rolling resistance.  Trains have almost none while trucks have a lot.  The rest is mainly drag and I’m sure stop and go traffic is a killer for trucks as well.  Airplanes use roughly 200 times more than rail.  Is buying carbon credits getting expensive to buy off your guilt for taking an airplane? – Become a hobo.  And isn’t the checked-bag charge for flying stupid?  Shouldn’t people be charged or not based on their weight plus that of all their crap?
  • Finding #8 – A virgin glass bottle doesn’t require a whole lot more energy than a recycled one but the public thinks it does.  My guess is recycling plastics doesn’t save a lot of energy either.  I would also guess recycling paper saves more, somewhere between aluminum and glass or plastic.  Not generating garbage for the landfill is as important as the energy savings to me.

One conclusion out of all this is we need to do a better job of informing end users that saving energy doesn’t mean freezing in the dark or taking a shower once a month.  I would say these concepts apply at least ten times more for commercial and industrial energy efficiency.  There is all kinds of waste in these facilities that do zero to provide better anything.

written by Jeffrey L. Ihnen, P.E., LEED AP