Solar power is a truly efficient source of energy, but it tends to fluctuate, and, as you might know, it turns off at night. One clever way to alleviate this intermittence is to store solar energy in the form of heat using molten salt. An aerospace company, Hamilton Sundstra, has created a venture called SolarReserve,… [Continue Reading]
Electric Tankless Water Heaters
September 3, 2006 by 152 Comments
Note: This post has been expanded and updated for 2009! Tankless water heaters only heat water when it is needed. About 8% to 30% of the energy consumed by a standard water heater goes to keeping the water hot while it’s not being used. New tankless systems heat the water instantly when you turn on… [Continue Reading]
The Solar House: Free Heating
January 2, 2006 by Leave a Comment
People often think of using solar energy for producing electricity, but it is actually easier to harness the power of the sun to heat your home. It’s free heat that has been utilized since ancient times but few modern architects or builders really understand the principles involved. The Solar House, by Dan Chiras, explains architectural… [Continue Reading]
Wolf Induction Cooktop
September 15, 2005 by 11 Comments
This new cooktop from Wolf uses induction to cook food efficiently, while the cooking surface stays cool to the touch. You must use a pan made of a magnetic material like stainless steel or cast iron. Induction stovetops are about 85-90% energy efficient, compared electric elements which are only 65-85% efficient. The manufacturer also claims… [Continue Reading]
Aquastar 125HX
September 28, 2004 by Leave a Comment
Aquastar tankless water heaters cut energy costs, because the heat the water as it is needed. These heaters are designed so that all parts are replaceable. Alexander Rose, who has used and reviewed this heaters says: There is a whole Aquastar line from large ones for multi shower households, to the smaller ones like mine.… [Continue Reading]
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