Home Alternative Technology

Alternative Technology and Renewable Energy can be great fun and very rewarding, especially if done at home. On this blog I share my ideas and tips for mainly simple and inexpensive alternative technology projects.

Friday, November 07, 2008

Generate Your Own Electricity at Home

People often ask me where to get the equipment required to generate their own power. Over the years I have found the some of the best suppliers of renewable energy bits and pieces and this sometimes takes a lot of searching.

I have started a small website listing prices and details of renewable energy equipment and hope this will steer people in the right direction, so that they know what they want and how much it will cost. I have already done most of the searching for you and you should be able to find what you need. There is information on solar panels, water turbines and wind generators. I hope you may be inspired to produce some of your own power!

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Saturday, August 23, 2008

New Large Solar PV System on my House


After years of experimenting with small solar PV systems on my house, I finally decided to invest in a seriously big system. My new system is almost 4kWp and has cost a lot of money, but I consider it is worth it for us and more importantly - the planet!
It should provide all our green electricity for the foreseeable future and the house roof looks great. We had it professionally installed by EvoEnergy and nothing was too much trouble for them.


My new solar system description is detailed here.

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Friday, June 06, 2008

Renewable Energy & Alternative Technology Private Sales


With my alternative technology website, I often get enquiries from people who want to buy or sell equipment. There doesn't seem to be a website that offers this, apart from the obvious auction sites, but these are too general in nature and prices obtained for sometimes quite valuable renewable energy kit, is often rather disappointing.

I have therefore added a Private Sales page to my website and hope that people will make use of it. There are only a few items listed initially, but I hope this will grow in the future. If you have anything to list, then please contact me and I will be delighted to help. Let's see if we can make this another popular page on my alternative technology website.

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Monday, May 26, 2008

Our visit to Symi, a very beautiful Greek island

I am writing this on my laptop, sitting on the roof terrace of our rented house in Horio, Symi. It is around 23 degrees in the shade and just about bearable in the direct sunshine for me. We are here for two weeks in mid May and it is proving to be very relaxing, with not much to do apart from eating, drinking and walking.

Horio is in an elevated position, set back from the pretty harbour and all the houses are reached by mostly tiny alleyways, suitable only for walkers and donkeys. Our house is called Two Fishes and is in an elevated position giving terrific views across the two bays and further to the coast of Turkey. All the houses are brightly painted to reflect the sun and keep them from getting too hot inside. I think we would really struggle in August, when the temperatures can reach 40 degrees!

Our house has the bedroom on the lowest floor which is set into the ground on the slope of the mountain and thus keeps pretty cool without the use of air conditioning. Electricity is very expensive on Symi, as it is generated centrally, by several huge, noisy, diesel generators on the road to Pedi about 2 kilometres away. I have found very little evidence of solar PV panels being used, as they are very expensive here and the population are actually quite poor. Most tourist visitors, unfortunately, don't care where their power is coming from, so I can't see the situation changing much in the future until diesel prices become a lot higher. Greek islands used to be very cheap for food and drink, but we are finding that prices are broadly similar to the UK now. The pound is not very strong against the Euro these days.

Solar power does appear to be gaining popularity here for providing hot water. You don't really need an insulated storage tank as the losses overnight are not too bad and the number of full sun hours with south facing panels is very high indeed. I reckon that around 10% of houses here have solar heated hot water and that figure will obviously increase as electrically heated water becomes cripplingly expensive.

There are not many vehicles on Symi, because there are not many roads and fuel costs are very similar to the UK. Here, of course, not much of the fuel cost is tax. Most of the cost is in transportation. There are quite a few mopeds and motorbikes as these can get down most of the level alleyways and are relatively cheap to run. Electric vehicles woud be a non-starter here, as the gradients are far in excess of anything achievable by electric propulsion.

Water is brought daily to Symi by tanker ship and then distributed by plastic piping to most of the houses. Higher up the mountain, water pressures are pretty low, so a domestic booster pump becomes a requriement. Drinking quality water is bottled and obtainable in most shops on the island at a price. There is no main drainage and the Greek plumbing is basic to say the least. Most waste is usually discharged into a ground soakaway under each house. We cannot, for instance, use the toilet and take a shower one after the other, because the waste just does not go down the plughole quickly enough!

It does seem rather sad to me, that although the Greek climate has such fantastic potential for providing abundant supplies of energy, the people cannot afford to make full use of it. It is ironic that Germany, with less potential solar power than even the UK, has the largest take up of solar power in the world. This is mainly because of the strong incentives that the German government provide for small scale electricity generation. Consumers are offered very attractive rates to buy back surplus power produced by home generation schemes. In the UK typical import rates are 10p/unit and 5p/unit for export. In Germany typical import rates are 10c/unit and 40c/unit for export!

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Tuesday, April 22, 2008

Hotel Rooms Much Too Hot!

We checked into an hotel on the south coast over the weekend and the room was stifling hot. The room had been extensively refurbished and was absolutely beautiful. It had all the high tech features including WiFi broadband, thermostatic shower and plasma TV, but no way of controlling the temperature except opening the windows.

I contacted reception and was informed that no maintenance person was around until Monday morning and most people just opened the windows to let out the heat! The radiators had been boxed in and there was no access to the valves, thermostatic or otherwise. So we did as advised and slept with the windows wide open with the heat spilling outside to cool the room down to a bearable temperature. In these days of concern about global warming and wasting energy, I could not let this go unmentioned. I imagine that many kilowatt hours of heat was going straight out of the window and wonder how many other hotel rooms have the same problem?

It must be costing the hotel owners a fortune in wasted energy, which could so easily be avoided by fitting an accessible temperature control system. I understand that nobody likes to check into a room that is too cold, but this was just ridiculous. Adding insult to injury was a notice displayed in the room advising people to save energy, by keeping towel use to a minimum to avoid expensive laundry costs......

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Friday, April 18, 2008

Pure Green Ecotricity Energy in Suffolk


After buying my electric G-Wiz car, my thoughts turned to where the electricity I use to charge it, actually comes from? If I really wanted to see a significant reduction in emissions as a result of driving an electric car, then I had to make sure the electricity it used came from totally renewable sources.

I did quite a bit of research and found that many so called "green" tariffs only involved a small percentage of renewable energy. None of the big electricity suppliers had a truly green product to offer. The choice eventually came down to two independent suppliers: Good Energy and Ecotricity.

Good Energy have a 100% renewable product, but do not invest very much in creating new renewable generation capacity. It is also pretty expensive. Ecotricity have two products. One has a very high proportion of green energy and is designed to compete with the prices offered by the larger suppliers. Their other product, New Energy Plus, offers 100% green energy but is rather more expensive than the larger suppliers. The factor that swung it for me was that Ecotricity spend more, per customer, on building new renewable generating capacity than all the other suppliers put together! My picture shows the Ecotricity wind turbine at Swaffham in Norfolk.

So by paying a bit more for my electricity, I am assured of a supply from totally renewable sources and I am helping to fund new green generation projects. If more people signed up for Ecotricity, it would help to expand the network of wind, solar, tidal, hydro and wave power installations in the UK. I do realise that not everyone can afford to pay more for their electricity, but if only half of those who could afford it signed up, it would over time, have a significant lowering effect on harmful emissions in this country.

Compare energy providers for yourself and decide whether you can afford to switch to Ecotricity.

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Sunday, April 13, 2008

Wild Cowslips In My Garden



We always get a clear indication of spring when the wild cowslips in our garden appear. They have come up every year since we have lived here and no amount of lawn mowing seems to deter them.

I even tried to transplant some a couple of years ago, to a different part of the garden, but they still come up in the same place as well as the place where I transplanted them to. My wife forbids me to run the lawnmower over them, so I have to steer it around them until the flowers run to seed. I collected the seed pods one year and scattered them in a wild part of the garden. Now they grow there too, even amongst my chickens!

I believe they are a protected species, so I thought I would show them off in a couple of pictures. We have plenty of daffodils too, but of course, they are not so rare, so I won't inflict pictures of those on you for now. We are very lucky to have a large garden and although the upkeep is hard work, it is nice to have nature reward us with flowers like these.

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