Wind Empowerment conference on locally manufactured small wind turbines that will take place in Athens in November 3rd to 7th 2014.
Please help with financial assistance primarily to contribute towards the travel expenses of our members coming from all continents, especially those from developing countries who cannot join us without a subsidy. These include members from AJA Mali, Craftskills East Africa (Kenya), Energizar (Argentina), KAPEG (Nepal), Kartong project (Gambia), MinVayu (India), ÉolSénégal (Senegal), among others.
Germany’s northernmost state Schleswig-Holsteinlies on the base of the Jutland Peninsula between the North Sea and the Baltic Sea.
It will produce as much green electricity as it consumes over the year for the first time in 2014. It also plans to eventually generate as much as 300% of its electricity from renewables. This is a big achievement as eight years ago it generated about 30% of its electricity from wind power.
Two years ago the state’s planed to go 300 percent renewable, a target that then-Environmental Minister Peter Altmaier did not doubt the state could reach.
This year, Schleswig-Holstein will cross a symbolic milestone towards that goal by producing as much renewable electricity as the state consumes in electricity (including conventional) over the year as a whole – meaning that the figure is a net calculation, not that the state can do without interconnections to Denmark and other parts of Germany. Indeed, the state needs the grid both to sell its excess renewable power and to purchase conventional electricity.
In April, the state’s Energiewende Minister told German website Klimaretter that the government’s new target for 40-45 percent renewable electricity by 2025 is not enough to offset the drop in nuclear power by the end of the phaseout in December 2022 – a statement that stretches the case.
In 2013, Germany met 25 percent of its domestic power demand from renewables, with nuclear making up around 15 percent. Renewables would therefore need to grow by 15 percent to completely offset nuclear, putting the country at 40 percent renewable power by 2022.
“We are already seeing enormous demand for our new battery system” said Wolfram Walter, Managing Director of ASD. “It combines the advantages of both stand-alone and grid-tie storage systems in one device – which is unprecedented in the market. By introducing our hybrid technology, we took a huge step towards making battery systems more efficient, and above all more cost-effective.”
Homeowners have previously had to choose between grid-tied and stand-alone storage systems. Houses with grid-connected systems draw power from the grid almost continuously, even when their batteries are fully charged. Stand-alone storage systems, on the other hand, disconnect the house completely from the public grid as soon as sufficient power is stored and then supply the home with power produced on site. Unfortunately, these systems have a big disadvantage in that if the battery no longer furnishes enough power to supply all the appliances in the home, the storage system is shut down and the house draws all of its electricity from the grid again. Conventional stand-alone battery systems therefore only allow either fully battery-based or grid operation, but not both at the same time.
The hybrid battery system combines the operating principles and advantages of both technologies it works like a stand-alone system and disconnects the house from the grid for as long as its batteries are able to furnish sufficient power. The house thus needs no further power from external supplies and operates autonomously. At times when the battery capacity is insufficient, the system automatically procures the additional quantity of energy required from the power grid. By design, the system therefore combines both energy sources and thus utilizes the maximum amount of battery power directly on site. This flow of current is regulated via a computer-controlled filter developed by ASD for the hybrid battery.
The operating principle of ASD’s hybrid battery significantly increases a household’s degree of self-sufficiency compared to that achieved with existing systems, frequently topping 80%. It takes less than a millisecond to switch between the two operating modes, so the changeovers are detected neither by humans nor the appliances in a system.
The battery is suitable for both AC and DC coupling. This enables more flexible planning than previous storage types, which are specifically designed for either AC or DC operation. The battery can be charged by photovoltaic installations, CHP plants and small wind powered generators alike.
We are heading to Glas Learning Centre, Ennisnag, Co. Kilkenny, for an open day on Friday Apr 20th, to talk about the wind turbine course that we are teaching on May 28th. If your are around the area call in for a chat and see what’s on offer http://glaslearning.ie/open-day
This will be a practical hands-on week of workshop time, running from Monday morning to Saturday, during which we will build a 4.2m wind turbine for an off-grid farm.
Please do not expect to go home with a wind turbine!
Part of the workshop fee is now funded by the Leitrim Development Co so the price for the workshop is now €100 euro. Let us know if you need help finding accommodation or alternatively you can camp at the farm for free, just contribute to the food bill Let us know as soon as possible if you wish to camp so that provision can be made for everyone. There will be one meal a day supplied for course participants, plus tea and coffee.
This is a taster of a build-your-own workshop – the goal is to give you a realistic look at the various parts of building a Hugh Piggot designed wind turbine. We will discuss the various parts of the project, the materials, tools and equipment needed as well as the other components of a wind energy system. You can try out some blade carving using hand tools to get a feel for the process. Some people are quite happy to undertake a turbine building project by themselves and this introduction will allow you to gauge the skills required and the likely time involved. We will also discuss the various turbine sizes and the other components required to get yourself up and running.
A hands-on wind turbine building workshop with Hugh Piggott.
These courses have been held since 2001,
with small groups around 5-8 people building a wind turbine over a
period of six days and testing it. Activities include carving blades
out of wood. winding and assembling alternators from scratch, arc
welding the steel frame. No previous workshop experience is required.
There is some informal discussion and explanation of the theory behind
the design and wind energy for stand-alone situations. During the week
we shall tour some of the many wind and solar systems on the Scoraig