With 2007 coming to a close, we thought it time to review how the Curmudgeon family did in its efforts during the year to reduce our large footprint on the world.
Electric Consumption
We did best in reducing our consumption of electricity. With our solar panels at work for the full year, we generated roughly 2600 kilowatt hours of emission-free renewable solar power, offsetting between 20-25% of our electricity needs.
We also had the first full year of benefit from our other conservation measures, including replacement of most of our light bulbs with compact fluorescents and turning off most of our electronics when not in use. Those measures--which cost a lot less than putting in solar panels--had about the same impact, reducing our consumption by about 2800 kilowatt hours.
All in all, we reduced our electric consumption by a third, from 15,800 kwh in 2006 to 10,400 kwh in 2007. Even more impressive is that since 2004 we have reduced consumption by TWO-THIRDS, from 29,400 kwh to 10,400 kwh. One key: in 2004 we had an electric heater in our greenhouse that used roughly 10,000 kwh by itself, just to keep a little room at about 55 degrees. We replaced the greenhouse with a very well-insulated sunroom, which is pretty much paying for itself in energy savings. (That's our greenhouse effect.)
A word to the wise: if you are using electric heat anywhere in your house, it's probably costing you a bundle. We have some friends in Scarsdale, NY, who had an enormous electric bill, and discovered one of the prime reasons was the electric heating in their garage.
It will be difficult for us to reduce electric consumption much further, absent a new, more efficient air conditioner. One of our a/c units is pretty old, so that upgrade may not be too far off.
Natural Gas Consumption
We've also made some progress in reducing our consumption of natural gas, which we use for hot water, heating, cooking and fireplaces.
In 2004-05 we averaged 2350 Therms of gas use, whereas in 2006-07 we averaged 1960 Therms, a nearly 20% reduction. We've done that without making our home uncomfortable--we keep the thermostat at 71 degrees, lest Mrs. Curmudgeon complain.
The keys, so far: turn down the thermostat when out of town; put in a storm door; turn down the heat in unused zones of the house (like the guest bedroom).
We need to do more, and are thinking of the following: programmable thermostats (to turn down the heat late at night) and replacing our older windows with today's double-paned energy efficient versions. Both of those steps will probably cost a good deal more than the savings they will generate, however (we have four thermostats and lots of old windows). We could also get a more efficient hot water heater, although hot water only accounts for about 150 Therms per year, so there's no big savings to be had there.
The good news is that natural gas is a very efficient energy medium for the uses to which we've put it--heating--so we're doing pretty well even without additional reductions.
Gasoline
Our progress in reducing gasoline consumption has been slow because we haven't replaced any cars in the last three years. We estimate that we have reduced consumption by about 10% by changing our driving habits--more coasting to stop lights, slower acceleration, better highway speeds.
In 2008 we may replace one car, and in 2009 the lease will be up on the Curmudgeon's Acura. We hope to get much more efficient replacements for both, but we can't be too radical--we still have to ferry two boys and all their stuff--and the occasional friends--all over creation. And we're pretty sure that "travel soccer" will result in an increased carbon burden as we travel farther afield to get to the games.
Solid Waste
We made good progress this year in boosting our recycling and reducing our garbage/trash. We are now meticulous about what goes into recycling--not just newspapers and magazines, but mail, school flyers, cereal boxes, other food containers. We also save all those plastic bags that the newspapers come in, along with the ones from stores, and put them into the plastic bag recycling at the grocery store. That has probably resulted in a couple thousand less plastic bags at the landfill from us this year. And we're religious about recycling cardboard, plastic bottles, metal cans--anything that is eligible for recycling.
We've also started doing some composting, but we could do better. So far, we're probably only fattening up our local squirrels, but a resolution for the new year is to come up with a good system to maximize composting.
Still, we put a lot of trash out each week. It'd be nice to reduce it further.
Water
Water is not energy per se, but it is a precious resource and it takes a lot of energy to get it to and from your home, so it's worth looking at how much you're using. We just started looking into this, creating a baseline of water use over the past three years so we can figure out whether we're making any meaningful reductions.
With this summer's drought, we certainly wished we'd had some rain barrels. Typically, a barrel will hold 50 gallons of water, and even a small rain storm will re-fill it. We could easily put out four rain barrels--one on each corner downspout--and with re-fills get several thousand gallons of water over the course of the spring/summer/early fall watering season.
Sustainability
Organic products and other renewable products obtained from sustainable practices also reduce energy needs and conserve the environment. We are gradually adding more organic products to our diet--eating out less would help(!)--and trying to incorporate sustainability into our purchasing decisions. It ain't easy, though.
Our bottom line: we made terrific progress in 2007, but we've probably harvested all the low-hanging fruit. It's doubtful we'll make as much progress in 2008, but our hope is that we will continue to reduce our collective Curmudgeon-household footprint as we go forward.