Some energy efficiency is spending dollars to save pennies.

Our local electricity provider has been running “power smart” adds where strangers suddenly appear in your home or office cheering when you turn out the light as you leave the room, or as you turn off the powerbar to your computer.  The message is that you should be encouraged for such conservation.  I have in the past mindlessly accepted the idea behind these ads as valid, since I have for my adult life turned out the lights I'm not using, but recently I’m coming to question some of what I'm hearing.

Sometimes you might leave a light on for a feeling of security, or if you were to turn off the powerbar, your appliances might lose track of the date or time.  So there are valid reasons for leaving these on when you are not using them.

In TV-Land, all the switches and powerbars are easy to reach (although ugly lying on the desk etc).  In my life I don’t have VERY convenient powerbars, and am more likely to have to reach behind your appliances to find the power bars to turn them on and off (shock hazzard from loose plugs you can’t see clearly is so remote I won’t address that at all).  So the activity isn’t as free as it appears in the ads.  It costs me something.  Convenience (when the remote controls can’t make the appliance wake up), time (running around the house turning things off as I leave).  There is a cost to me.  The concept of power leaches or vampires, that suck a tiny amount of energy constantly has been a popular topic in the press in 2008.

Additionally there have been a number of ads about replacing my old inefficient refrigerator with a new energy smart refrigerator.  I’ve realized that I need to do some research on my own.  What is the cost and what is the benefit to me to the utility and to the environment.

Now I am the kind of guy who turns the VCR or TV off when I’m not actively using them. The lights all go out at night (with the exception of the 0.3Watt LED night lights in the halls).  I turn off lights I’m not using, but I installed the lights so they could be used.  They work for me, not the other way around.   So with a heart that wants to conserve and show my thankfulness through not wasting what I’ve been given, I wanted to know where we were wasting energy.  I purchased a $17 (blue planet?) meter from my local hardware store that can show the Amps, Watts and Volts being used by an appliance in real-time.  Additionally it can log the electricity usage, showing you the total Kilo Watt Hours (KWH) consumed by the appliance over a period of many days.  After you enter the cost of electricity ($0.072 / KWH here) into the meter, it can tell you the dollar cost of your appliance for the time it has been plugged in.  I started making discoveries:

computer / adsl modem / router / UPS / printer : $0.25 / day

Old inefficient refrigerator from the last decade: $0.40 / day

TV / VCR / video game / stereo: $0.10 / day

Laptop computer: $0.05 / day

Microwave:  $0.02 / day

So this causes me to think carefully about what I’m hearing and being told.  I’m being told to switch off the power bar for my TV etc, when the use of the devices is only $0.30 / day.  So conceivably I might save 1 or 2 cents there.  Hardly worth the time is it?  Could I pay you a penny to stop doing what you are doing and spend 10 seconds coming over here and flipping this switch?  If you were paid $20/hour, that is 5.5 cents per 10 seconds.  Now its true, if you have nothing else to do it wouldn’t hurt for you to spend your spare time doing this, but the benefit seems really really minute compared to the cost?  Why is your utility spending $100,000s on this advertising?

My understanding of the issue is that it comes down to capacity.  If they need to build another power plant that is exceedingly expensive, but if they can continue to sell power from the existing power plants, that is a much more reasonable proposition for them.  The issue is nothing if we are talking about you saving $0.01 of electricity for flipping off the power bar.  The issue is really only significant thanks to the power of multiplication.  If you can convince 5,000,000 people to save that much electricity, you just saved $50,000 of electricity per day.  So the impact to your utility is huge, but the savings for you as an individual user of electricity is essentially nothing.

Now how about that refrigerator.  $0.40 per day to keep my food from spoiling seems like a good deal to me.  I don’t have to go down into a cellar, I don’t have to drop my food down a well, or deal with bricks of ice, or food poisoning.  I think it is a bargain.  Through my study of the new energy efficient fridges on the market it appears that the new fridges would use half the electricity per day.  Over the course of a year that would save me $73 in electricity.  However a new fridge costs around $800 (depending on what you buy).  So it would take me 10 years for the fridge’s energy savings to pay for the fridge.  I don’t know about you, but with the quality of manufactured goods dropping, I’m not sure I would expect my new fridge to last me 10 years.  This old fridge on the other hand, continues to work and looks after the food just fine.  So the marketting says “buy a new energy smart fridge”.  To do that, somebody needs to manufacture the fridge with all its glass and plastic and metal and compressors and chemicals and foam.  Then they need to ship it across the country or around the world, advertise it, house it in a store, get it here, and dump my old fridge in a landfill or recycling depot (landfill that sells metal).  It seems to me that the most environmentally responsible thing I can do is to make my existing appliances last as long as I can. 

So suffice it to say that the meter has probably paid for itself in debunking “new appliance savings” and in giving me some peace of mind about the little power leaches plugged in at my house.

 I am happy to say that we enjoy the light provided by the current generation of Compact Flourescent light bulbs (CFL)s  Instead of 100W we use 50W of light over our sink.  Instead of 160W we use 44W in our bathroom. The list goes on of the places we have installed these.  The hallway light behind me, the lamp in the corner.  They aren’t the best light for all situations, but we know that the 33W we are using right now beats the 150W we would have had otherwise.  To my mind this is a very smart energy saving, because apart from purchasing the bulbs initially, there is no incremental cost to turning on a CFL over a standard incandescent light.  It just saves me money and saves us all power without inconveniencing me or introducing an additional cost.

We need to take a very strong stand against “GreenWash” in all its forms.  Keep your brain engaged as you are urged to do this or to do that to save the planet.  Among the genuinely good information there is certainly hype that is designed to pad someone elses wallet at the expense of your own.