Energy

Energy

Oil at $100 a barrel – forecast

telecommuting
Telecommuting is not going to solve this one

Last year we predicted oil prices would reach $50 a barrel. Now $50 is the new floor for prices, rather than the ceiling. This year, forecasts of $100 a barrel oil are threatening meltdown for Western economies. At the projected $100 level for oil, living off-grid moves from a quaint hobby for a minority to something the majority must consider.

Here is the latest news update

Consumers Must Plan Now for Potential Oil Shock – IEA FRANCE: April 29, 2005

PARIS – Car-pools and driving restrictions could help shave at least a million barrels a day (bpd) from industrialised nations’ oil demand in the event of a supply crisis, the International Energy Agency said on Thursday.

They are among measures an IEA study ‘Saving Oil in a Hurry’ says consuming nations must plan to ease potential shortages and price rises which could result from a large disruption to international supplies.
Oil prices have already risen to record highs above $58 this year as surging demand in Asia’s emerging economies pushes world supplies close to current capacity. Goldman Sachs bank has warned of a potential ‘super-spike’ to $100 a barrel.…

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Energy

London building claims zero fossil energy

self-powered apartment
No power bills here, dear

A property developer has launched an energy self sufficient block of flats in London. Yorklake Homes said the four flats generate all their own energy from non fossil fuels within the site boundaries.

Designed by Bill Dunster’s architecture firm, the main source of energy is a Swift silent wind turbine, one of the first domestically available near-silent wind turbines, it generates power at mains voltage. It was commissioned by Renewable Devices and supplied by Scottish and Southern Energy plc. When combined with solar panels it enables the development to generate as much electricity as it consumes.…

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Courses, guides & tutorials

Wind-diesel power from Russia

wind turbine team
Russian turbine team

If you want a high-quality, low-cost household wind turbine, go to St Petersburg. Toomas Pungas, Project Manager, ElektroSfera, explains.

Russia is the world’s biggest country. Almost 70% of it is sparsely populated. That means 70% of the country is off the grid, including European North, Siberia and the Russian Far East. Power in these regions is usually by diesel generator. Thousands of small and big diesel power plants consume 6 to 8 millions tons of fuel annually. Some of the regions are very inaccessible, and the fuel is ferried by planes and helicopters, which is wasteful and expensive. There are villages where electricity is available only a few hours a day  for morning and evening milkings.
The total population of these regions is about 10 million. Annually Russian state and local budgets spend more than $3 billion to provide distant territories with fuel.

Now they have started paying more attention to wind resources.…

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Courses, guides & tutorials

Off-Grid Lifestyles of the Rich and Famous

green back there
Grass is greener in BurntPoint

The Rich are meaner than you and me.

Solar power for homes is so subsidised, some high-end home owners, never afraid to take whatever handouts are going, are shifting to innovative energy practices–and not for environmental reasons.

The wealthiest American families are using geothermal heating and cooling systems; efficient wind turbines make it a breeze to generate electricity.

“Some of our high-end clients literally never see their energy bills,” says Steven J. Strong, president of Solar Design Associates in Harvard, Mass. “They are putting a higher value on having more control over their energy destiny. This is a hedge against uncertainty.”…

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Which Batteries? (2)

A Reader wrote to us: Hi!

I intend to use a solar system, but don’t seem to get proper advice on storage batteries.

I was advised to use Trojan 105 (6 volt) golf cart batteries x 2 for my six 22 Watt solar panels. Apparently there’s also a 12 volt type golf cart battery available, instead of the two 6 v. batteries. We have daily good sunshine of app. 8 hours and PV output app.12 amp @ app.. 16.8 (Voc).

Now, I don’t know if above are **wet cell** types, giving of gasses or whether they are sealed types. And moreover, should their electrolyte be topped up etc. The main point is: I would like to keep my batteries inside the house, due to excessive heat in our area, but with vapours it would be very corrosive indoors. On the other hand I would prefer “deep cycle” batteries for longest lifespan, that would be the most cost effective.

I would greatly appreciate it if you could advise on these matters.…

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Energy

Learning windpower from Africa

Preparing the turbine
Preparing the Zimbabwe turbine

Wind energy guru, Hugh Piggott of Scotland, designed one of the world most rugged and useful wind generators as a project for Zimbabwe.
Piggot, one of the most active wind energy advocates on the Internet, went to Temaruru, a site in the eastern highlands where Powertronics of Harare has installed a stand alone community wind power station.

The goal of the project was to design a simple yet powerful method for small communities well off the grid to be self sufficient and have reliable power. The result? What is now known commercially as the African Wind Power 3.6, a 3.6m powerhouse of rock solid reliability.…

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Energy

How to make money from wind energy

by Jerome Baddeley, Iskra Wind

small is good
you can make money from a small turbine

Over the last few months UK legislation on planning permission for small turbines has changed, and the selling of power back to the grid means small scale wind energy is now accessible and viable.

Until this year planning laws did not differentiate between giant wind farm scale turbines and the sort of utility scale, farm machinery type turbines most people use on their smallholdings or remote homes. Turbines were either tiny battery charging units seen on yachts or immense power generating units installed by utility companies. This made it difficult for small generators to get planning permission. In the last few months a piece of national planning policy (PPS22) has laid out the distinctions, making it harder for planners to turn down small turbine applications. We have already had several successful applications using PPS22.

The economic case for schools, communities and farmers is now incredibly attractive. With up to 50% grants available from the government Clearskies programme; valuable emissions trading certificates awarded for every unit generated; the ability to sell excess power back to the grid, it is now possible to recoup the cost of purchase and installation of a small turbine in under 5 years. With low maintenance turbines designed to last 20 years that leaves 15 years of steadily increasing income generation and savings as the cost of grid electricity climbs.…

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Energy

U.S. grants for renewable Energy

alt energy is still tiny
Renewables still a tiny share of nation’s energy use

There are various US federal and state and sometimes utility company incentives for installing renewable energy. The benefit is you reduce energy consumption through conservation and the subsidies pay for things like energy efficient lighting, appliances, and insulation. DSIRE USA, a database of State incentives has a list of the net metering rules (grid back feeding — i.e. selling energy back to the grid)) and all the main incentives for each US state. Other countries also have various subsidies as well, and these will be covered in a separate post.…

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Courses, guides & tutorials

Geodesic Quonset: Inexpensive, Easy DIY Shelter

Geodesic Quonset
Geodesic Quonset

Many folks are familiar with the concept of a Geodesic Dome, and the great advantages of strength and minimal materials,

Geodesic Dome
Geodesic Dome

but most have not heard of a Geodesic Quonset, that also brings along many of the same advantages. It’s great for connecting domes, standalone as an emergency shelter, garage, or greenhouse. We built one recently, with a length of 60′, a width of 15′, and a pre-sidewall height of 7.5′. Less than 100 man hours to build, and a materials cost of less than $500 (plastic sheathing) , it’s extremely strong and functional. We built this structure using new 1″x6″ green lumber (1″x4″ was originally specified), but since all the pieces are less than 4′ in length, waste/scrap or recycled lumber would be ideal. All the pieces were screwed together using a power screwdriver and 3″ wood screws, 5 to a connection.…

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Battery Maintenance

PV panels only provide power when the sun is shining and wind generators only produce when there is sufficient wind, which can be less than 25% of the day. Typically we store power during times of generation in battery packs for use when no generation is possible. In order to keep those batteries at peak performance, and provide long service life, a regimen of maintenance must be observed.

The main things to remember when keeping your batteries in trim is cleanliness of the terminals, proper water levels, and not discharging below the recommended minimums, which in our case is 50%. Proper charging is also important. The best “manual” I have found describing the technologies and methods of care is Bill Darden’s Battery FAQ. There is a section on sulfation, a common battery killer in improperly maintained batteries. A recently purported cure for sulfation can be found at https://www.batterylifesaver.com/. The inventor claims that by dissolving sulfate crystals, he can increase battery life and perfomance.…

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Courses, guides & tutorials

Moira Cruickshanks
Moira Cruickshanks Geothermal Q&A

Moira Cruickshanks of Imperial College London Engineering Department answers your questions on Geothermal Energy next week in our forum. Here she introduces ways you can use Geothermal Energy.

Post your questions for Moira in the Off-Grid Forum.

Geothermal energy is heat from the Earth. On a large scale, geothermal power plants generate electricity using naturally heated groundwater and steam from deep in the ground to turn turbines.

But we can also use geothermal on a small scale to heat our homes, schools and offices, although it is not yet an off-grid technology. If you want to supplement your grid energy with a renewable off-grid supply, either taking advantage of natural hotspots in the Earth or using the constant temperature of the planet to regulate interior temperatures, you will need to make an initial investment in the technology, and the scale is more for a community than a single home.

It is not quite as easy as plugging a wire into the earth and then lying back and toasting your toes but almost. Go to our Forum to ask questions and get answers on installing Geothermal: https://off-grid.net/index.php?cat=30…

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