Showing posts with label alternative energy. Show all posts
Showing posts with label alternative energy. Show all posts

Private electricity grids fueled by renewable energy the future for communities

by Michael Smith (Veshengro)

In “The Lead south Australia” Andrew Spence wrote: 

CONNECTING new housing estates to their own private electricity grids fuelled by renewable energy is the cornerstone of ZEN Energy's plan to put power back in the hands of consumers.

The company has launched ZEN Communities – an “end to end” service from power generation through to networks and retailing to deliver low cost renewable energy direct to entire communities.

ZEN Energy Director of Innovation Richard Turner founded the company in South Australia 11 years ago and has overseen its evolution from solar panel installer to Australia's first dedicated “community energy provider”.

Read more here.

What we are seeing here is, to a degree, the “small is beautiful” approach as it was suggested many decades ago in the book by the same title by John Seymour. 

However, we need to go further than private energy grids to community-owned, to people-owned, energy grids, for energy from renewable sources, and renewable sources here does not just mean solar, or wind, but also methane gas from digesters, which can be used for cooking and heating as well as for generating electricity. 

Only when the people themselves are in control of their own energy production will we be getting somewhere but that, obviously, is not something that our governments and the corporations would like to happen for people who are independent of government and corporations simply cannot be controlled. 

It is for that very reason that, despite all the government rhetoric, red tape makes it very difficult for people to set up their own power system on their homes or in their localities. I mean, really, come one, we just cannot have people do their own thing and be the master of their own energy production. 

© 2015

Clean tech is better for economic growth than fossil fuels (take that, Big Oil!)

Solar and Wind PowerAnti-greens often try to make economic arguments against the big spring-cleaning that our civilization is going through. How dare we invest in clean technology? Don't we know that it's bad for the economy! That all these green things will always be expensive, etc, etc...

Sorry, did I spill some knowledge?

Well, it turns out that investments in clean tech can actually be quite good for the economy. Not every bet can be a winner, but on average, clean technologies are good for economic growth thanks to an effect called "knowledge spillover", says a recent study coming out of the Business School of the Imperial College in London, UK. The general idea is that clean technology as a whole is a lot less mature than the old dirty industries that it aims to replace, and so there's more innovation low hanging fruits to be harvested, and advances by one lab or company can more easily spillover to others. One way to see this in action is with patents; the authors of the study found that clean tech patents were being cited 43% more than 'dirty' patents, and that knowledge spillovers from clean technologies are "comparable in scale to those observed in the IT sector."

This means that a new technical breakthrough or a new business model makes much bigger waves in this young industry. Coal power plants might be getting incrementally better over time, but they are pretty mature. On the other hand, if you look at electric cars or solar power, the past decade has brought dozens of breakthroughs and game-changing change (in price, performance, quality, availability). For example, batteries developed for electric cars can have a big impact on grid storage, one company's solar breakthrough can be rapidly adopted by the rest of the industry, etc. All of this snowballs and ends up being good for the economy, according to the study.

Read more: http://www.treehugger.com/clean-technology/clean-tech-better-economic-growth-fossil-fuels-knowledge-spillover-study.html

People have the power! Big Six UK energy monopoly faces challenge

Reuters/Paul HackettThe UK energy market is facing a challenge from councils and social housing landlords seeking to undercut the monopoly of the six big suppliers amid growing frustration with energy price hikes nationwide.

Local authorities are pledging to slice around 100 pounds ($158) from the average energy bill - the average of which has risen to more than 1,000 pounds (nearly $1,600) per household.

“Social housing providers and local authorities across the country are looking at energy... and see real opportunities to do things differently,” Dawn Muspratt, the leader of the project, known as Our Power, told The Independent.

Our Power is a collective of eight Scottish housing associations and a renewable energy charity, and it is reportedly coming very close to signing a deal with Ofgem – the UK’s energy regulator – which would allow it to supply power to tens of thousands of households.

“For Our Power, this is all about impacting on fuel poverty, particularly for those most disadvantaged in the energy market,” Muspratt added.

Read more: http://rt.com/uk/203503-uk-energy-suppliers-challenge/

Autarkie vom Stromnetz mit Solarspeicher und Mikrowindkraft

KfW geförderte Photovoltaikspeicher mit Windkraft optimal nutzen

690836Steigende Strompreise lassen die Energiewende im Kleinen weiter voranschreiten. Vor allem die Besitzer privater Immobilien und kleiner Betriebe setzen zunehmend auf Speicherlösungen wie die 'Sonnenbatterie'. Solche Systeme speichern einen Teil der erzeugten Energie in Akkus um Ihn dann zu den Hauptlastzeiten bereitstellen zu können. Staatliche Förderungen lassen diese Art der Netzentlastung aktuell schnell Marktanteile gewinnen.

Doch hat die Technologie noch erhebliches Ausbaupotential, denn längere Zeiträume ohne die benötigte Sonne auf den Solarpanelen erschöpfen die Akkus schnell. Im Winter oder bei Schlechtwetter können gerade kleinere Speicher Ihren Nutzern daher kaum noch Strom liefern.

Die Lösung dieses Problems ist vieler Orts bereits verwirklicht - Windkraft. Der Wind weht fast immer genau dann wenn Solaranlagen schwächeln. Im großen Maßstab übernehmen dann ganze Windparks die Aufgaben der vielen tausend deutschen Solaranlagen. Doch was im Großen funktioniert war im Kleinen bisher unmöglich - kleine Windkraftanlagen bekamen kaum Genehmigungen und kosteten im Schnitt 5.000€ pro Kilowatt. Das entspricht mehr als den doppelten Kosten die eine Solaranlage heute verursacht. Hinzu kam, dass viele Anlagen kaum deutschen Qualitätsstandards entsprachen und die Wahl des richtigen Gerätes selbst für Profis eine Herausforderung darstellte.

Für den optimalen Einsatz einer Solaranlage mit Speichersystem wird eine Windkraftanlage benötigt die schnell und sicher auf dem Dach installiert und an das vorhandene System angeschlossen werden kann. Teure Masten und aufwändige Genehmigungen sind dabei ebenso ein Ausschlusskriterium wie unkalkulierbare Lebensdauer und hohe Kosten. Mit diesen Gegebenheiten im Hinterkopf startete Anfang 2014 das innovative Start-Up Unternehmen 'FuSystems SkyWind' in der Hauptstadt des Windkraftlandes Niedersachsen. Ziel war es eine Windturbine zu entwickeln die die Kosten halbiert, die Leistung absichert und die Installation vereinfacht. Das Ergebnis ist der SkyWind NG, eine sogenannte 'Mikrowindturbine'.

Mit seiner Größe von nur 1,5m kann der SkyWind ohne Kran mit Standardhalterungen auf nahezu jedem Dach montiert werden. Seine Kosten von nur 2.249€/kW sorgen für eine wirtschaftliche Integration in das Gesamtkonzept, während seine patentierte Bauart aus Metall eine lange Lebensdauer sichert. Aktuell wird der SkyWind auf dem einzigen deutschen Windtestfeld für Binnenlandkraftwerke unabhängig vermessen und seine Leistung nach den Standards der großen Windkraftanlagen zertifiziert. Mit nur zwei dieser Anlagen könnte so in Zukunft jeder Besitzer von Speichersystemen die Verfügbarkeit seines Speicherstroms verdoppeln. Denn auch in Schwachwindgebieten steht Windkraft bei Schlechtwetter und im Winter für die Nutzung im eigenen Haushalt zur Verfügung.

Auch wenn erste Projekte bereits umgesetzt sind sieht sich das Team hinter dem SkyWind weiter vor großen Aufgaben. Ihr erklärtes Ziel ist es Windkraft zu den Verbrauchern, nicht nur in den windstarken Regionen, sondern auch in Länder wie Bayern und Baden-Württemberg zu bringen. Denn hier ist der Gewinn an Autarkie aufgrund der mitunter langen Zeiten in denen die Solaranlagen verschneit sind besonders groß. Wenn durch diese 'Windkraft zum Anfassen', dann auch die Akzeptanz der erneuerbaren Energien allgemein steigen würde sei das ein Gewinn für alle, so das Team.

Full Disclosure Statement: The GREEN (LIVING) REVIEW received no compensation for any component of this article.

This article is for your information only and the GREEN (LIVING) REVIEW does not (necessarily) approve, endorse or recommend the product, service, company or organization mentioned.

East Tennesseeans switching to firewood to save money

In order to save money this winter, some residents of East Tennessee are switching to firewood for their heating

by Michael Smith

One resident of the State who decided last year to switch solely to firewood instead of using propane gas to heat his home says that it cost him about $350 for the wood to warm his three-bedroom, two-bath house and with energy prices even higher this year, it is something he certainly will continue. He reckons that with the rate then it has saved him $600 and with the ever increasing prices it will be even more so. Others are looking into the old-world energy source as well.

Aside from the fact that it is, more than likely and especially if one has access to a cheap source of wood, a cheaper way to heat a home (and whatever else) than using gas or oil and even coal, it is also much more environmentally friendly. Burning wood is, basically, carbon neutral for the only carbon released is that that the wood used in order to grow and mature.

Many, like the Tennessee resident mentioned, in that State and elsewhere, and not in the USA alone, made and are making the switch to heating and even cooking with wood because of the
skyrocketing prices for gas and other sources of heat and cooking source.

Having said before that the saving that was made by this particular resident was $600 and that with the increasing costs of gas and oil it may be even more in the future we can, though, of that I am sure, be certain that the price of firewood is going to go us as well as demand increases.

Soaring energy costs and threatened scarcity of some fuels like home heating oil this year have led more homeowners to seek alternative sources for heat, and as a result, both seasoned firewood and some supplies of wood-burning stoves are expected to be in short supply.

The demand for wood-and-pellet burning stoves has caused local sales to increase this year, and already firewood sales have taken off about a month early.

The owner of Ben's Firewood in Knoxville said that while they normally start the winter season around October this year it has already started. People are apparently so worried that things are going to get worse, so they are lining up before it gets too bad.

The push for alternative home heat has largely been driven by the Northeast, where the price of heating oil, still the primary method for home heating, has soared. The average household is projected to spend more than $2,500 this winter, according to the Energy Information Administration, a 30 percent increase from last year. And even with crude oil prices - which factor largely into the price of heating oil - falling to a six-month low recently, the price of heating oil was still just under $3 a gallon, its lowest price since early March. Prices once were projected to hit as high as $4 a gallon.

The Knoxville wood- and coal-burning cook stove company already is backlogged on its most popular item, the Torridaire coal heater, a stove that requires no electricity. Stove sales are typically higher after natural disasters, such as Hurricane Katrina, and when economic times are a little rough.

Sales also are up for many firewood dealers - business is up 40 percent in many cases - and the true firewood season has not even begun yet.

But the seasoned wood, or wood that has been dried naturally for about eight or nine months, is quickly becoming in short supply, since it has to be cut around March in order to be ready for winter months.

Kiln wood, or wood that is accelerated through the drying process by sitting four or five days in a 190-degree oven, also is limited based on how much that kiln can produce.

There are, on the other hand, woods that can also be burned green and some burn better and hotter green than seasoned and those are beech and birch. Where they are in ample supply things should not be too bad.

A full cord of seasoned wood will replace about 300 gallons of diesel fuel for heating a home while green wood would only replace about 225 gallons. The difference is water content - the more water that's in the wood, the more water you have to burn off before you get any heat. But even burning green wood is still cheaper than any other energy source.

The most important part in all of this is, however, and this must be observed, that the wood comes from well managed and renewable sources and that it is replanted.

In the UK, if would go back to firewood, and in many places we certainly could and even should, nay, let me rephrase that, must, the coppice woodlands could, once again, come into their own and new ones can and must be planted.

Coppicing, I am certain, could also be done in other countries and environments, such as in the United States.

Wood shortages will, no doubt, occur, especially in the places where it is more used such as in the rural areas of the USA and elsewhere, especially shortages of seasoned wood. Another source of firewood that should not and must not be overlooked for those that need to watch pennies is waste lumber from building sites. The only worrying aspect here could be the release of certain chemicals that were used in the wood, as some building lumber, even if only used for shoring up, is treated.

There is a lot to consider when deciding to switch to alternative heating, such as buying a wood- or coal-burning stove, but many of them do burn more efficiently and cleanly than they did in the 1980s. While there will be more cost up front for a stove, most mid- to lower-level priced stoves should pay for themselves in about two or two and a half years.

As for firewood, it is recommended buyers check references of dealers and be sure to have their chimneys swept at least once a year.

If you have got any amount of land or access to land, and a chain saw, you have basically an inexpensive fuel. A lot less expensive than fuel or gas or electricity.

© M Smith (Veshengro), September 2008
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FuturEnergy Wind Turbine Powers Britain's Best Eco-Home


The installation of a FuturEnergy high-power wind turbine has helped a unique two-storey house made from straw to win the title of Britain's Best Eco-Home. The accolade was presented as part of Channel Four television's Grand Design Awards.

Built on top of a remote hill overlooking the Teifi estuary and the west Wales coastline, 'Penwhilwr' is the UK's first two-storey loadbearing straw house, with walls made solely from stacked straw bales without a framework. Only natural materials and techniques were used during the construction process, which was carried out by amateur volunteers from around the world.

Five-years in the building, Penwhilwr was designed and conceived by its owner Rachel Shiamh as both a home and base for her natural essences and jewellery business and for the Quiet Earth Centre for Alternative Living, which provides a range of courses, retreats and conferences in the ways of authentic living.

A total commitment to non-impact self-sustainable living is reflected throughout the design of the building with all electrical power generated cleanly on-site by the one-kilowatt FuturEnergy wind turbine supplemented by five 125-watt Kyocera solar PV (photovoltaic) panels. The hybrid mix of wind and solar power provides sufficient all-year round electricity to cover all the building's current and future needs including the running of low-energy lights, laptop computers, sound system, pumps for the solar thermal system and underfloor heating and appliances including washing machine.

The FuturEnergy wind turbine is mounted on a seven-metre tall mast on the edge of a field, some 20-metres from the house. Power from the turbine and the solar panels is stored in an insulated battery bank comprising eight six-volt cells, with a 24-volt output inverted to produce a standard 240-volt AC supply.

Further reducing Penwhilwr's impact on the environment, all heating is provided by a bio-mass heating system fueled by wood coppiced from the surrounding woodland, with hot water produced by a solar thermal heater. Natural spring water is supplemented by a rainwater harvesting system, whilst all waste including human waste is composted naturally on site.

“We chose the FuturEnergy wind turbine due to its UK manufacture and because it and the company's representatives were highly recommended to us,” comments Rachel Shiamh. “The turbine also needed to be aesthetically pleasing to soothe a neighbour's concerns.”

“It's beautiful being powered by the sun and the wind, as it gives one the chance to truly live with rather than against nature.”

www.gwaliaessences.co.uk
www.quietearth.org.uk
www.futurenergy.co.uk

Source: RightanglePR
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The world's largest Wind Farm – to-date – finally approved

The world's largest wind farm, which has been planned for the North Sea off the coast of Kent, UK, for some time has now finally been officially approved. However, the project, which is being planned by Eon and Shell energy companies, is being threatened by an increase and projected costs, and possible regulatory problems with transmitting the power.

A substation and the power cables necessary to transport the power to population centers are being fought by locals. At the same time, the projected cost of the project has increased from £1.5bn to £2bn.

Locals are are not, so it is claimed, interested in having the 340 turbine project in their back yard, but the UK needs to focus on these massive renewable projects in order to meet it's Kyoto targets. Without them, it simply won't happen.

The amazing thing, so to speak, is that some people always manage to get public opposition stirred against such projects and those that do the stirring are, invariably, members from organizations that are, supposedly, concerned with the environment and are supposed to be all for alternative, renewable energy, such as Greenpeace of Friends of the Earth. They are all for it, it would seem, when it is in other countries but as soon as it is here and in one or the other's backyard then they hit out against it. We cannot, I am afraid to say, have it both ways.

This is the same when it comes to waste incineration projects that will generate electric power while burning rubbish. Again and again the likes of Friends of the Earth and such will stand against this saying that we must recycle instead of incinerating. Yes, that is true. We must recycle what we can recycle but there will always be some left that cannot be recycled and this will either have to go into holes in the ground, of which we are running out of or indeed have run out of, or it must be burned. This is being done in other countries, such as Germany, Sweden, etc. and – strangely enough – there seem to be no problems there and no protests, in the main, against such projects. However, as soon as they appear on the horizon anywhere in the UK those people are there campaigning against those projects instead of making some real positive input. A little less negative attitude and some more positive stances and suggestions would be nice – I am not holding my breath, however, waiting for such moves.

© M V Smith, October 2007

The Most Powerful Wind Turbine Anywhere

Enercon GMBH of Germany, probably one of the most innovative wind power companies in the world, has just announced that it has begun selling a six-megawatt wind turbine! That is a good 20% more powerful than any other turbine currently on the market, producing enough power per turbine to power 4,000 homes, making it the most powerful wind turbine anywhere, at this moment in time.

Enercon does not waste much time figuring out fancy names for its turbines. Their most popular model, the E-40, has a turbine diameter of 40 m, while this new turbine, the E-112, has a turbine diameter of 112 meters. It is that simple. Who needs fancy names anyway for turbines?

Interestingly, this isn't the world's largest wind turbine; it just produces the most power, a testament to Enercon's innovative strategies. The turbine blades are specially designed, and Enercon's patented gearless generator keeps noise, friction, and maintenance to a minimum.