Energy Efficiency – Elusive and Ephemeral
(The four E’s (you heard it here first)
My Energy History: When I was a but a wee one, we spent a rare Christmas upstate, and in just under TWO WEEKS, burned 200 gallons, which would have added up to 2,400 gallons for the heating season, or very nearly $10,000 at current pricing. Much time, effort and money latter, the house was eventually insulated to 1980 standards. Oil use was cut 40%, to 1,400 gallons, or $5,600 at current pricing. NOT GOOD ENOUGH! In the last 3 years I’ve embarked on super insulating, actually performing an entire deep energy retrofit, of our old house in the country.
First I cut energy consumption 30%
Not Good Enough!
I've cut it 50%!!
It's a deep energy retrofit!
5 BTU per SF per Degree Day !
Aiming higher, 3 BTU per Degree Day and I'm Superinsulated
(fyi - Current code homes 5 - 10 BTU per Degree Day)
Now I'm just aiming for as low as I can go.
I've got a bit of work left superinsulating the attic and water heater.
After that I will be switching over to capturing solar energy via a solar tempered sun spaces around the house.
It’s not just that I’m an energy geek, or even that I’m just a geek. It's either slash costs or loose the house.
Does that mean energy efficiency is important only for those with old homes, homes in the country, the less well off?
NO!
We all know we need to protect the environment more.
Simplistically think of powering 100% of your energy needs with solar cells (photovoltaic’s). It's a contradiction to have to cover not just your house (school, factory, etc) but cut down a half (or half dozen) acres of trees out back and cover that with solar cells too, just because you haven’t slashed energy use first.
The big energy use in our buildings is thermal, heat loss and gain (building and for hot water use). The easiest and lowest cost means to reduce thermal energy needs is not just insulation, but super insulation Click here and here for more.