(Nederlands) Statistieken mei 2011

It’s the last day of the month, and that means it’s time to update the statistics, especially because I haven’t updated them for the past two months. Electricity wise May 2011 was a month of extremes, both regarding production and consumption. Charging a Nissan Leaf a few times consumed around 20kWh which played a part in a high total consumption of 103 kWh. May was a very sunny month, so our solar panels produced a nice 214kWh! Over May 2011 alone we have a 111kWh surplus, and over 2011 until today we have 174kWh surplus. Even if the summer and autumn are only average, 2011 should be great year for solar power.

Our natural gas consumption was normal at 18 m³, while our drinking water consumption was a bit high at 4,6 m³. That’s probably caused by the dry weather, as our (edible) plants needed quite a bit of water.

(Nederlands) Wasmachine defect

After more than 10 years of loyal service – it didn’t break down even once – our washing machine went to laundry heaven today. For the past six months it was becoming ever more noisier during the spin dry cycle, a clear indication that the bearings were near the end of their lives. Today it suddenly threw out most of its water, so this marks ‘the end of the road’ for our loyal Indesit.

So now we’re looking for a new one. Of course, it’ll have to be an energy efficient one, I wouldn’t want to buy a washing machine which uses more energy than the old one. After having spent about an hour on the internet it became clear that it’s not easy to compare the energy consumption of washing machines. Most machines have a energy label, but that’s not very useful to me. Apparently at some point in time the A-label was not good enough any more, because you can now buy A+, A++, A+++ and even A++++ washing machines, but what these labels mean in terms of kiloWatt hours and litres of water seems to be a closely guarded secret.

Sometimes I could find a value for the amount of energy and/or water used for a washing cycle, but because I haven’t been able to find  a single case where the type of washing cycle was specified (short/long, temperature) this information is quite useless. My Plugwise measurements show that for a short cycle on 40 degrees C our current washing machine used, on average, 0,65 kWh. (It varies  between 0,34 en 0,72 kWh throughout the seasons, because the tap water temperature varies.) Anyway, I can’t seem to find a user-friendly overview of washing machines where I can sort on the following properties:

  • At least as efficient as our current washing machine, preferably more efficient. 0,65kWh for a short 40-degrees washing cycle.
  • Good washing quality. It would make no sense to buy an efficient washing machine if some pieces of clothing would have to be washed again.
  • Low water consumption. I don’t know the water consumption of our current machine, but obviously, lower is better.
  • Price € 300 – 500. Lower is better but I would be willing to pay more for a low energy/water consumption, good quality and service.
  • Spin dryer 1400 rpm

To the readers of this website: would some one happen to know of a washing machine which match these specifications?

Oh, and I am not interested in a hot-fill washing machine. We have no solar hot water system and that means a hot-fill washing machine would only raise our natural gas consumption. That would not be so bad if we didn’t have solar panels, but because they generate a yearly surplus it’s financially unattractive to increase that surplus while at the same time increasing our natural gas consumption. I’m specifically looking for a conventional – but efficient – washing machine.

[Update May 31st]

I ordered a Whirlpool Nevada 1600 today. It’s efficient and should do a good job of cleaning the laundry – for a good price. I would like to thank everybody for thinking with me, it was very useful and I learned a lot.

Dutch Open Solar Boat Challenge 2011

Besides the World Solar Challenge coming up in October we have the Dutch Open Solar Boat Challenge 2011 in the Netherlands! It’s a race for solar-powered boats, held by the end of next month.

The race has nine stages and four classes, and is held in the province of Zeeland, in the south of the Netherlands. The finish is on Saturday, June 2nd in Vlissingen. If I don’t have anything else and the weather isn’t too bad I might go and take a look. it’s not around the corner from where I live, Hilversum, it’s a train journey of nearly three hours.

World Solar Challenge 2011 – a status overview of the teams

World Solar Challenge 2011

It’s the end of May now and that means that the start of the World Solar Challenge 2011 is less than five months away! Just like in 2007 and 2009 I plan to closely follow this fantastic event, and report on it on this website.

Just like in previous years the solar cars have to travel 3000 km through the Australian outback, battling heat, wind, sometimes vicious rain, dust devils, cattle grids, road trains, technical problems, stress and the other teams. I was very happy to read this: “During the event satellite tracking will be in place for each vehicle so you’ll be able to follow each team as they make this great trip.”. In previous years it was often very hard to find out where the teams were in relation to each other, if the system works it should be much clearer this time.

Unfortunately the WSC website is not very up-to-date regarding the participating teams, which forces me to, just like in 2007 and 2009, spend a lot of time on the internet, looking for information about the teams. That is fun to do, but it takes up a huge amount of time.

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Article in staff magazine

Langs de meetlat

My employer’s staff magazine has a section called “along the ruler”, where employees’ sustainability is measured. About two months ago I was asked if I was interested in being featured in this section and of course I was! An interviewer from the company that makes the magazine called me and interviewed me for about an hour about all the things I do. That was fun to do. About a week later a photographer showed up at our house who took something like 200 photos of me.

Two weeks ago the magazine dropped through the mail slot and I was of course very curious about the article. Please click on the image to the right to view it in a larger, readable, size.

I received a lot of positive reactions at work, with two things being said the most: “So you’re going to buy a clothes dryer?!?” and “Gee, if what you’re doing is not enough, are we going to make it?”. The question I answered with “Maybe, but when I buy one it’ll be the most energy efficient one I can find, and of course I’ll monitor its energy consumption” and the second question with other question “That’s food for thought, isn’t it? When are you going to work at your footprint?”. Of course, the second question is never answered :)

All in all, it was a very fun experience.

Solar Days 2011 open door day – short report

Solar Days 2011

Yesterday we had our open door day, and that was good fun again. Unfortunately the local newspapers ignored the Solar Days this year, and the supermarket around the corner removed my small poster – twice. Considering the lack of publicity I feared that no one would show up but it turned out okay. In total, seven people made it to our house.

I was able to show these people how solar panels work, what it costs and what it yields. One of the visitors was trend watcher Vincent Evers () who travelled with his two young children all the way to Hilversum from Amsterdam in his Nissan Leaf (of which you can see the live status online) to see out solar panels in action. He even interviewed me, when that movie comes online I’ll update this article with a link to it.

Everything considered it was an enjoyable day, with people in the house from about half past one to five. I showed everybody the inverters, and also our electricity meter which was spinning backwards during the sunny periods between the clouds. I used the Plugwise system to show the visitors the live performance or our system. A few people also took a look at the rain water collection system which I’m building and thought that was pretty cool.

Next year I’ll have to approach the local media earlier, and I’ll also have to find better spots for my posters.