Solar

Most solar panels are facing wrong direction

Extra revenue generated by pointing panels Most solar panel installers follow conventional wisdom handed down from architects, which holds that in the northern hemisphere, windows and solar panels should face south.

This makes intuitive sense since it would seem to maximize the amount of sunlight a panel will get as the sun tracks from one horizon to the other. But it isn’t true, at least according to a single study of homes in Austin, Texas. The Pecan Street Research Institute found that homeowners who aimed their panels toward the west, instead of the south, generated 2% more electricity over the course of a day.

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Community

Underground home in Cumbria

Underground house

From what I have read, the underground house is often considered the holy grail of off-grid living, it’s known to be warm in winter, cool in summer, making life more self sufficient for the occupants of the home. I ran across this video recently about a family creating an underground home, taking advantage of a former sandstone quarry, most of the “hole” their home would go in was already there.

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Solar

Solar Thermal System for Heated Swimming Pool

Imagine taking a dip in your outdoor swimming pool in late October, even November as the ground hardens and the frost thickens. The steam is coming off of your heated pool, and its not costing you a cent – apart from considerable installation costs that is.

There are some design factors to be considered, including proper sizing and location. But there are many web sites to help you, as well as the off-grid technical forum for advice. It’s not imperative to have your solar pool heater configured and installed by experts.

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Community

Solar powered pyramid

Pyramid power

Ever see an off-grid pyramid? Well you are about to. This is the video story of Greg Grant, who began his off-grid existence slow and small.

He didn’t put a lot of money into his project. What he had was land, lots of natural materials, a great bunch of talented and helpful friends, and a unique vision. He chose to make his off-grid home out of short straw-bale walls, but with a steeply pitched, pyramid shaped roof.

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UK solar homes pass 500,000

Recent data from the Department of Energy and Climate Change (DECC) shows that nearly 460,000 homes across the UK have solar panels installed, and that does not include off-grid homes, since these do not show up in official stats.

The data was released recently by DECC and published on the website of the Solar Trade Association (STA). It represents a combined peak capacity of 1.3GW, making domestic solar the largest sub-sector of the solar market.

The popularity of solar in the UK has largely resulted from huge subsidies that have now been scaled back. The result of intensive lobbying by the green movement, it has made a few companies super-profits and further enriched some wealthy householders, but done little to decarbonise Britain.

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Ted Turner goes off-grid

Ted Turner’s hunting and fishing resort, Vermejo Park Ranch, has installed a new $1 million solar system that will take the lodge off the power grid.

Turner, the 239th richest man in the US with a fortune of $2bn bought the 578,000 acre ranch in New Mexico in 1996. It stretches into Colorado and reportedly is one of the largest privately owned ranches in the country.

In 2007 Turner partnered with New Jersey-based Dome Tech Solar to create DT Solar, a renewable energy company focusing on solar power.

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A Liter of light

MANILA, Philippines – A hole-in-the-wall establishment in coastal Dumaguete City has a new come-on for its local and foreign tourist-diners, aside from food and brightly colored seats.

“You wanna take a look?” goes Mifune Japanese Restaurant’s teaser on its website. “Feel free to ask our waitresses to have a look in our back kitchen! Picture-taking is allowed. School classes, students, (and) researchers are welcome…. ”

The attraction? Three 1.5-liter plastic soft-drink bottles, filled with water and a little bleach, poke out of the restaurant’s back kitchen roof, illuminating the whole room without using electricity from morning till sundown.

The not-so-secret ingredient: The upper-half part of each plastic bottle juts out above the restaurant’s metal roof and catches sun light; the water’s refractive property then disperses the light 360 degrees inside the restaurant’s back kitchen,

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Power decentralised in Germany

Perhaps its because of the political structure, with powerful local government, but Germany’d centralised energy system is quickly dissolving.

Germany’s power companies are closing power plants and scrapping plans for new ones. The nation had a freak-out after the Fukushima disaster and decided to abolish nuclear power by 2023. Meanwhile, energy prices continue to sink, and solar installation continues to grow. By decentralizing power generation, the renewables boom could do to the power industry what the internet did to the media: put power in the hands of the little guy, and force power companies to rethink how they do business.
As soon as the sun comes out, that is.

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Community

Off-Grid lighting

Whether you live off-grid or in a regular home, you need light. With the right number and position of windows, you can get along just fine during the day, but once the sun goes down, you start needing some sort of lighting. Fortunately today there are lots of options for those of us who live off-grid.

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Nipton – self-powered town in California

One of the world’s biggest solar power collectors is being built next to the tiny town of Nipton, Calif., which is ironic because Nipton is the closet thing to an off-grid town – with 85 per cent of its energy coming from a set of solar panels installed by one of its 60 residents.
Gerald Freeman unlocks the gate to the small power plant and goes inside. Three rows of solar collectors, elevated on troughs that track the sun’s arc like sunflowers, afford a glimpse of California’s possible energy future.
This facility and a smaller version across the road produce almost all of the power required by Nipton’s 60 residents, its general store and motel.
Freeman, a Caltech-trained geologist and one-time gold mine owner, understood when he bought this former ghost town near the Nevada border that being off the grid didn’t have to mean going without power.
He contracted with a Bay Area company to install solar arrays on two plots of land. The town has a 20-year agreement to buy its power at a below-market rate.

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A million solar homes in Bangladesh

In Bangladesh, one of the poorest countries on earth, a renewable energy company is busy installing nearly 1,000 solar home systems each day.

In November 2012 Grameen Shakti hit 1 Million Solar Home Systems (SHS) installed. The company’s milestone reinforces a lesson that is increasingly clear. Whether it’s Germany, the US, or evenChina distributed solar installations are driving the solar revolution.

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South Africa finds answer to Eskom failure

As China expands its presence in Africa, a new wave of renewable energy companies are bringing off-grid innovation to the continent while Western competitors stand around and watch.

JinkoSolar, a Chinese solar module manufacturer has declared that it is supplying South Africa’s first  utility scale, off-grid photovoltaic solar system. The 1 MW plant will supply electricity to a chrome mine in the Limpopo province, in the north east of the country.

Oil-replacement photovoltaic solutions are continuing to emerge as a fully-proven power source in mission-critical situations.

This installation will sharply reduce the daytime diesel usage at the mine in the northernmost South African province, an area in which utility company Eskom is active, but repeatedly letting its customers down, allegedly through a mixture of corruption and poor management in the opinion of some. Reports suggest that the State-owned utility will shortly seek yearly price increases of between 14.6% and 19% – well over the rate of inflation.

Installation in the Limpopo mine will be designed and constructed by Solea Renewables and will employ 4,170 JinkoSolar modules. The plant is likely to be completed in October of this year.

Mhlanzi, the Director of Solea Renewables, stated that, “Mines and other consumers face power supply constraints due to capacity challenges at Eskom. The delivery of our PV plant will not only benefit (the chrome mine), but in turn help reduce the ever increasing energy demand Eskom faces.”

JinkoSolar, indicated in announcing the supply deal, that it has “great expectations” for the country. According to, Kangping Chen, Chief Executive Officer of JinkoSolar, “The region’s booming population, strong economic growth and abundant sunlight represent an exciting opportunity for solar and for JinkoSolar.”

As well as ordering a clean-up of Eskom management criminality, South Africa has taken a number of steps in recent months to drive the growth of cleaner energy in the country. In August, the US Export-Import bank signed a declaration of intent (DOI) with the Industrial Development Corporation of South Africa which will see the Ex-Im bank provide financing up to US$2 billion worth of US technologies, products and services to South Africa’s energy sector, with a focus on clean-energy development. This is expected to lead to bribery by US energy companies, and  further corruption during the tendering process

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