The One Tonne Life project has ended and the content on this web page is static and is not updated any more. The project was unique and pioneering, making the conclusions and all information connected to the project just as interesting and up-to-date today as when it was run. Read more about the project and get inspired! (March 2017)

One Tonne Life

Tag: Siemens

Thanks and good luck, Lindells!

The family Lindell has now returned to their former life. We want to thank them for all time and commitment during the past six months in order to reach 1 tonne of carbon dioxide emissions. will be left online so that is possible to browse the content published during the project time.

One Tonne Life is a project in which A-hus, Vattenfall and the Volvo Car Corporation joined forces with industry partners ICA and Siemens to create a climate-smart household.

Over a period of six months, the Lindell test family lived a climate-smart lifestyle with the aim of reducing their carbon dioxide emissions from 7.3 tonnes per year, which is roughly the average in Sweden, to a minimalistic one tonne. After an impressive final sprint, the Lindells crossed the finishing line at 1.5 tonnes.

The Lindells exchanged their 1970s home and their almost 10-year-old cars for a newly built, climate-smart wooden house from A-hus and a battery-powered Volvo C30 electric. Vattenfall provided renewable electricity, new energy technology and energy coaching. ICA and Siemens were industry partners for food and household appliances respectively. Method development and calculation of the family’s carbon dioxide footprint took place in partnership with the Chalmers University of Technology and the City of Stockholm’s environment and Health Administration.

Transportation and electricity consumption were the areas in which the family made the most progress.

Emissions from transport dropped by more than 90 percent, not least thanks to the fact that the family’s Volvo C30 electric was recharged with electricity sourced from hydropower. The family’s home from A-hus produced its own electricity and with renewable energy from hydropower, carbon dioxide emissions from purchased electricity were virtually zero.

Carbon dioxide emissions from accommodation were more than halved – and food is the third area in which the family made considerable progress. By not throwing away food and by making wise choices, the Lindells made a significant cut in their carbon dioxide footprint. Varying one’s choice of meat and eating more vegetables are easy ways for anyone to reduce food-based carbon dioxide emissions.

Viewed per category, the Lindells managed to reduce their CO2 emissions from transport by almost 95 percent, from food by 80 percent, from accommodation by 60 percent and in other areas by 50 percent. All told this means their CO2 footprint shrank by 75 percent.

Read more
Final report – detailed figures and comments from the family and the companies involved (PDF)
Calculation –  live climate-smart and save money each month (PDF)

The photo is taken June 13th after the official closing of the One Tonne Life project. In the middle Alicja, Hannah, Nils and Jonathan Lindell, surrounded by several of the persons who have been involved in project administration, media contacts, film and photography during the projekt. In the background the solar panel facade of the One Tonne Life house.

Follow the Lindell family!

During the One Tone Life project we document what happens in the life of the Lindell family on video. Here are all the webisodes (short episodes) that has been released so far. And as a bonus, the trailer for One Tonne Life. Enjoy!

Give your white goods some love

We tend to forget about all things that function well. But if you give your white goods the love they deserve, you’ll be doing both your wallet and the environment a big favour. What’s this all about, you might well ask?

Take for example the Lindell family. They have cutting-edge white goods that are superbly efficient, the very best in the Siemens range, but what good will they do if they do not get the care they deserve? When it comes to the fridge and freezer, the term “care” means

– Checking the temperature, -18°C and 5°C in the freezer and fridge respectively
– Vacuum-cleaning twice a year under and behind the units
– Regularly checking and wiping dry all the seals

I asked the family to check the temperatures inside the freezer and refrigerator. In order to get an accurate reading from the fridge, you have to place a thermometer in a glass of water and let it remain overnight. In the Lindell family’s fridge, the temperature was zero degrees. That’s an unnecessary waste of energy without in any way benefiting the food inside. In the freezer the temperature was -20°C. Every degree increases electricity consumption by 5%. Two degrees means 10% waste of electricity. In terms of the number of kWh one might be tempted to think this is of marginal difference since these are after all high-efficiency white goods. But the principle of “every little counts” is as important here as it is anywhere else.

So give your white goods the love they deserve, take care of them and they’ll serve you loyally year after year, repaying you by being kind to your wallet and our environment.

Lars Ejeklint, Vattenfall

Webisode #6 “The Dinner Party”

Multi-tablets – expensive and unnecessary

More and more dishwashers are being sold as “green” machines. Today’s dishwashers do a good job and they are economical with both electricity and water. The tests to which they are subjected by Swedish consumer magazine Råd o Rön are tougher than those conducted previously. Plastic containers and stainless steel saucepans are nowadays included in the tests because they are more difficult to dry properly. If we look at the Siemens machine with which the house is equipped, its electricity consumption is 0.73 kWh/wash. The average in the test that Råd o Rön carried out at the end of last year was 0.98 kWh/wash. Dishwashers are becoming increasingly efficient with every new model on the market. The reason is that they use very little water. The Siemens machine uses just seven litres of water, which is recirculated through the machine more than 600 times during the washing sequence. When it is time to retire your old dishwasher, take into account energy consumption as one of the selection parameters – not just colour and design. NOISE is another important consideration to bear in mind. If it weren’t for the gently glowing blue lamp, the Lindells would never know if the machine is on or not. A difference of ten dB(A) means a doubling of the noise level.

Why do we buy multi-tablets? They are up to four or five times more expensive than dishwashing powder and do not make the dishes any cleaner.

Multi-tablets are popular but they cost. The idea is that the tablets should melt slowly to keep pace with the dishwashing cycle. First out is the detergent and last out of the tablet is the rinse aid agent that gives the dishes their clean sparkle. But how can the tablet know when it is time to release the rinse aid when actual dishwashing time varies with the type of washing programme that is selected? The tablets also contain substances such as salt to soften hard water, but bearing in mind that eight out of ten homes in Sweden do not have hard water, it is unnecessary to flush thousands of tonnes of salt down the drain. The best choice is to buy dishwasher powder, fill the machine’s compartment with rinse aid and, for those homes that need it, fill up the container for water softener. The next piece of advice is not to overdose. Read the instructions and never use more than instructed. Dishwashing powder is effective so there is no need to overdose. Want to look after the environment and your wallet? Start using dishwashing powder instead of multi-tablets. The tablets are four to five times more expensive than the powder. The cost of multi-tablets per wash is almost twice that of the electricity used.

Lars Ejeklint, Vattenfall

Will Sweden win the dishwashing championship?

Researchers have compared dishwashing practices in Sweden, Italy, Germany and Britain and concluded that we Europeans have widely differing dishwashing habits and that, irrespective of country, we all tend to take work away from our dishwashers. Our bad washing-up habits waste money and impact the environment.

The Italians are worst, unnecessarily wasting 5600 litres and 100 kWh of electricity every single year. We Swedes are not all that good either, flushing 3100 litres of water down the sink and using up 60 kWh of electricity for no reason at all. In comparison with the Lindell family’s Siemens dishwasher, the average Italian wastage corresponds to four and a half months of dishwasher use. The corresponding wastage figure for Sweden is almost three months of dishwashing.

So what’s the big reason?
And it gets worse, according to the study. Between two and four out of every ten plates never gets to the dishwasher but is instead washed by hand, and we only half-fill our dishwashers.

Fill the machines to the top and stop hand-washing – that way you’ll reduce water consumption by about 50% and electricity consumption by 28%, according to the researchers in Bonn.

Wash wisely – by machine.

Lars Ejeklint, Vattenfall

How energy-efficient can a tumble drier be?

The tumble-drier is the item of household machinery with the worst reputation from the viewpoint of energy consumption. But the fact is that if you live in a Nordic climate and dry your clothes during the winter months using a Siemens tumble drier featuring a built-in heat pump, it is actually more energy-efficient than hanging up your clothes to dry indoors. This is because the moist air that exits the laundry drying room has to be heated up, and this process uses more energy than the tumble drier does.

The One Tonne Life house is equipped with a Siemens tumble drier featuring a heat pump. It consumes 50 percent less energy than a Class A drier, in other words A-50%. Thanks to a steady flow of air combined with heat pump technology, it is possible to maintain a lower temperature without impacting efficiency. A lower temperature makes the tumble drier more economical to operate, at the same time as it dries the clothes more gently.

Article number: WT 46W571DN

Hans Söderberg, Siemens

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