Green Options

Last month, the Michigan Legislature passed a bill mandating that 10% of the state’s electricity be generated from renewable sources by 2015, and interim targets take effect three years earlier.

However, according to a report from the U.S. Energy Information Administration, during the first half of 2008, renewable sources made up more than 10% of all domestic energy production.

For the period January 1 - June 30, 2008, the United States consumed 50.673 quadrillion Btus (quads) of energy - of which 34.162 quads was from domestic sources and 16.511 quads was imported.

Domestically-produced renewable energy (biomass/biofuels, geothermal, hydropower, solar, wind) totaled 3.606 quads — an amount equal to 10.56% of U.S. energy consumption that is domestically-produced.

The contemporary looking building pictured here is not a high-end green building full of high tech features. Rather, it is a prizewinning affordable housing design for South Africa that costs significantly less than a new car. This is a house designed to provide affordable housing for very little cost: 50,000 South African rand (which is about US$ 6,000). And there are a lot of things to like about this design.

Fine Fueling offers a pointed and ironic take on fuel prices (and takes a couple of political jabs at a couple of recognizable figures as it does so), by presenting bottled varietal fuels and offering capsule reviews of them. For example,

A zesty, full bodied, thermal cracked desert fuel, with wonderful balance. This fuel totally over-delivers on our hedonist’s meter.

This petro-oenophile’s version of fuel choice includes such [...]

Showering is one of the major uses of domestic water. Showering is responsible for roughly 18% of indoor water use. But with a new kind of shower system invented in Australia, showering could, according to the manufacturer, use 4 times less water and save up to 87% of the energy used in typical showering.

Australia has been suffering through a drought for the last several years. Since 2003, most of Australia has been experiencing the most severe drought conditions on record. And Australia is the driest populated continent, which further exacerbates water issues there. So it’s not surprising that a super-efficient shower would come from Australia.

According to the Quench Showers brochure, “If we focus on Australia’s water position we are at crisis point. Being aware of this is a start, but more importantly, we all need to understand the crisis and take immediate action if we are going to influence change. Without changing the way we consume and manage our water usage in our day-to-day activity, this crisis will become a widespread catastrophe!”

So how does the Quench shower save so much water and energy?

As part of the current Canadian election campaign, leaders of the Canadian Liberal Party have announced a plan for spending more than a half a billion dollars to improve the energy efficiency of homes across Canada, if they are elected next month.

Under the four-year proposal, the Liberals would offer homeowners $10,000 in financial support for investing in energy-saving measures such as insulation, weatherproofing and more efficient heating systems.

Up to $10,000 would also be available to homeowners as an interest-free “green mortgage loan” to help with up-front costs and major retrofits.

Utility-scale windpower is an important and growing part of the US energy portfolio. Farms ranging in size from dozens to hundreds of turbines can produce in excess of 60 megawatts of power. Plans for gigawatts of wind power are being proposed all over the globe, and new wind farms are regularly being proposed that outstrip one another to be the largest in their respective locations, or in the world. At the far end of the scale, the largest size wind turbines have a rotor diameter of 126 meters (413 feet), and are estimated to be capable of producing 20,000,000 kilowatt hours of electricity annually (enough to power as many as 5000 European homes). Since the power generated by a turbine increases exponentially as it gets larger, new turbines will continue to grow in size.

But small-scale turbines are perhaps a more exciting realm of development. The standard, propeller-style turbine is well established, and there are many suppliers for this kind of generator in a range of sizes. In 2007, Home Power Magazine had a roundup of more than a dozen small wind turbines ranging from 8 feet to 56 feet in diameter (the latter of which is far larger than even a large, inefficient household would need for their power requirements). Green Building Elements had a review of this article last year.

Designer Hafsteinn Juliusson has found a compelling image for this series of designs of rings with living plants in place of precious stones or other mineral elements more typical to jewelry.

The designer says of the design, “The collection of this hand jewelry is designed for people in metropolitan cities and is an experiment in drawing nature toward man, as nature being the presupposition of life.”

Link: Hafsteinn Juliusson

A family in Australia has created their own tiny wetland as a part of a household grey water system.  It is a fairly large DIY project, but, as the article demonstrates, not an overwhelming project.  The writer even enlisted his young children to help in the construction.

Black water is toilet waste and other water that requires more substantial treatment.  Grey water is non-sewer waste water from washing clothes and showers and the like.  Although in most homes, both black water and grey water go into the sewer system and are handled in water treatment plants with the same processing, grey water really requires much less treatment. It is possible to find other uses for grey water, including using the water for toilet flushing or for irrigation.

For several years, Professor Behrokh Khoshnevis at the University of Southern California has been working on systems for rapidly creating buildings with system that is essentially a very large 3-dimensional printer.  Called Contour Crafting, the equipment is able to rapidly build up walls.  Already, test runs have been able to produce six-foot high concrete walls.

One goal of the team developing this technology is to be able to build a house in a day, a goal that they hope to reach within the next few years.  There is some merit to this goal, and the benefits of being able to rapidly and inexpensively produce houses are obvious, though not without some attendant problems.

“Satellite images gathered by NASA show that the north-west passage opened last weekend and the final blockage on the east side of the ice cap, an area of sea ice stretching to Siberia, dissolved a few days later.”

Whether or not you subscribe to the concept of global climate change due to human factors, there is no dispute that, for the first time in recorded human history, the [...]