Low-Cost Solar Heater Made From Soda Cans
Posted by Sonja Ebron
The green economy is here, and those seeking to profit from it must keep an ear to the ground for new business ideas. As a sign that green thinking has reached the grassroots, I recently found a Daily Kos diary describing how to heat your home with soda cans. The materials are easy to find at most hardware stores, and the process is relatively simple. This could be a great money-maker for an industrious entrepreneur with a little mechanical skill.
Here’s what you do:
- remove the ends of 240 soda cans,
- glue 16 cans together with caulk to make a column,
- repeat step (2) until you have 15 columns and let them dry for 2-3 days,
- drill 15 circular holes into two 2 x 6’s to make column manifolds,
- fit the soda can columns between the two manifolds,
- make a rectangular box with a plywood base and line with aluminum foil,
- place the cans and the manifolds inside the box,
- cover the box with Lexan sheeting and seal the edges,
- connect the columns with flex duct on the top and bottom of the box,
- attach some piping, an in-line fan, a thermostat and other accessories.
Despite all the high- tech research on new products to save energy and the environment, these are the proven, low-tech, low-cost concepts that will see most of us through.
Save Energy At Home And Get A Higher Bill?
Posted by Sonja Ebron
We’re about to get ripped off again by our electric utility companies. Regulated utilities have sought repeated rate increases from state regulators as the costs of oil and natural gas rose the last few years. Deregulated firms have collectively raised their rates with impunity. With rare exceptions, few have lowered those rates now that prices have declined for both fuels.
The Wall Street Journal reports that consumers are using much less electricity this fall and winter than in past years. Just as we limited our driving when gasoline prices rose, it appears we’ve also lowered our use of electricity as electric rates have climbed. Perhaps the milder weather this winter reduced the need for electricity to heat homes and businesses. Or perhaps the slow economy shuttered businesses and forced people from their homes, reducing the demand on power plants. But some utilities report residential use down as much as 9%, a much greater reduction than could be caused by abnormal weather and economics combined. “Something fundamental is going on,” says Jim Rogers, chief executive of Duke Energy. Perhaps the real reason is that people are finally getting serious about energy efficiency and conservation and simply eliminating wasteful practices in their homes.
Expensive Heat This Winter
Posted by Sonja Ebron
By all accounts, heating our homes will be very expensive this winter. The National Energy Assistance Directors Association (NEADA) projects large increases in heating costs for all fuels this coming season, which runs from October through March. NEADA is the group of state agencies that handles LIHEAP funding for low-income residents nationwide. A recent NEADA study (PDF) shows an average 15% increase in heating costs this winter, capping a 42% increase over the last four years. Those using heating oil fare the worst: they will pay 32% more this winter than last, capping a 116% increase over the last four years. As you might expect, all-electric homes fare best in winter, with only a 4% increase this year and a 22% increase over the last four years.
Wholesale natural gas prices have been crazy this year, as high as they were after Katrina and Rita knocked out gas production in the Gulf three years ago. After peaking around $14 per million BTU, they’ve settled at just under $12 as of this writing. That’s about a 25% rise in price over the last year. Residential natural gas rates have risen accordingly, ranging from $1.59 to $1.82 per therm for a 12-month contract in Georgia. blackEnergy has offered only variable rates for the last three months. We’re betting — guessing, really — that prices will settle before the winter sets in, and we can recommend a good 12-month lock-in rate for our customers. Either way, it’s going to be a tough winter for those using oil, propane or natural gas.
