BUILDINGS

The amount of energy used in the lifetime of a building depends largely on construction methods and materials. The property sector accounts for around 18 percent of greenhouse gas emissions in Sweden, and there is significant room for innovation in the building sector.

Natural heating and cooling

Technology for storing heat — and even cold — in underground wells has been in use since the 1970s. Boreholes for geothermal energy may be 60 to 200 metres deep, depending on energy needs and geologic conditions. You might be tempted to believe that heat comes from the earth’s deep, hot magma, but you would be wrong. Rather, it...

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The rubbish vacuum

Most of us regard household waste handling as nothing more than a practical necessity, not something to give a lot of thought. It’s pretty simple: we sort, pack and carry our rubbish bags out to the bin, where a lorry picks them up. The early-morning din of banging trash cans is simply part of the urban soundscape for many...

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Wind power stored in the sea

Renewable energy advocates have long eyed the possibility of capturing the power of ocean swells and breaking waves, but finding practical technologies at the right price has been an elusive pursuit. Until now. Among the technical hinders are that swells move relatively slowly and the size of breaks varies dramatically according to weather, season and other factors. Making wave...

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Environmental twist on a century-old business concept

Since the late 1800s, the Ludvig Svensson textile factory has stuck to its original business concept: manufacturing high-quality textiles for interior furnishings. More than one hundred years later, the company still makes interior textiles for sale both by the metre and as finished draperies. But these days Ludvig Svensson relies on more technically advanced materials for the bulk of...

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Efficient household appliances

When you hear the term “cleantech”, you might think of exotic products dreamed up by eccentric entrepreneurs with visions of changing the world. In many cases, that stereotype wouldn’t be far from the truth. But one of the most important examples of cleantech is probably standing unobtrusively in your own kitchen, doing its work day in and day out...

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Interest in solar cells is growing rapidly

Do you have a battery-free pocket calculator? Then you probably own a solar cell – a piece of equipment which converts sunlight into electricity. Solar cells have been around for a while, but they are still relatively expensive even though the raw material, sunlight, is free and unlimited in many places around the world. The sun provides our planet...

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Fibre optics bring light to dark rooms

Fibre optics can create a more wholesome indoor environment and save energy. For practical reasons, work in the traditional farming community followed the availability of daylight. Most of us would still probably prefer to work in natural rather than artificial light. Studies confirm this instinct, and the fact that health and productivity increase in premises with access to natural...

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Efficient light sources and light management save energy

Lighting is responsible for between 30 and 45 percent of the total energy consumption in an office block. A modern lighting installation can, however, halve the energy consumption. This requires a combination of energy-efficient light sources and reflectors, as well as a system for managing the light. A side effect is that energy-efficient light fittings also produces less heat,...

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Low-energy light bulbs without mercury

With the aim of developing a low-energy light bulb which works without mercury, Russian scientists and scientists from Chalmers University of Technology in Sweden have worked together to develop a field emission cathode, a cold cathode which produces a flow of electrons. The benefit over traditional hot cathodes is the reduction in heat loss. Hot cathodes can be found...

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Heating systems to safeguard the future

The old oil-fired and electrical boilers used for heating homes really are past their sell-by dates – both from an environmental point of view and in light of the rising fuel prices. Some households have gone over to heating systems based on renewable energy, or have linked up to district heating networks. What may a smart future heating system...

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The Swedish project Advantage Environment provides information about existing and future products designed to reduce environmental impacts.

Links

Cleantech Scandinavia
Cleantech Scandinavia is a membership network of investors and affiliated cleantech professionals.

Swedfund
offers risk capital, expertise and establishment support for investment in new growth markets in Africa, Asia, Latin America and Eastern Europe (non-EU).

Swedish Cleantech
is a website based on cooperation between government and industry and stakeholder associations, as well as regional environmental technology actors.

The Swedish trade and invest Council
Export of sustainable urban development, energy and environmental technology