Växjö also continues to invest in low-emission fuel technologies for sustainable transit, in addition to city planning efforts that encourage cycling and walking.
Fossil Fuel-Free and Net Zero Goals in Växjö, Sweden
- combined heat and power (CHP, also known as cogeneration) sourced from biomass - biomass-based CHP produces both district heating and renewable energy for Växjö
Växjö has a relatively small population (the population of Växjö municipality is <100,000), with around 3 people to every car. Reaching for a fossil fuel-free society is easier in Växjö because sustainable transit is the norm.
Pedestrian street in the city center of Växjö
Växjö has a 150km bike-path system and continues to maintain and expand the bicycle path network so that it remains fast, easy, convenient, and safe to cycle in Växjö.
Streets in Växjö city center feature pedestrian and cycling-only car-free zones; for easy access to markets, cafes, retail stores, and restaurants.
Buses in Växjö
Växjö has a renewable fuel-powered bus fleet with buses that run on locally produced biogas; sourced from bioenergy programs such as a local waste-to-energy(W2E) program.
By 2015, such measures as the local W2E program, and other bioenergy programs, had already resulted in cutting Växjö's per-capita CO2 emissions by more than half compared to 1993 levels.
Växjö's path to becoming fossil fuel-free by 2030 includes sustainable public transit measures, along with a focus on cyclists and pedestrians.
"Växjö is investing in sustainable travel on foot, by bicycle and by public transport. Our buses run on renewable fuel and we plan to lay cycle superhighways for quick and easy travel within the municipality. Växjö will lead the way in sustainable travel...
Växjö is part of a region and we need a simple and attractive regional infrastructure that provides accessibility without fossil fuels."
Most of Växjö's land consists of forests, lakes, parks, farms, and other green spaces.
Biomass, biofuel, and biogas power the municipality of Växjö. Bioenergy is the primary power source for city buildings, residences, and public transit.
Växjö makes good use of its unique geography, as over half of the city is covered by forest, to produce renewable energy. Växjö is recognized internationally as a city that leads the world in locally sourced renewable energy (mostly biomass energy).
Växjö's biomass production has a low environmental impact.
Biomass and biofuels, mostly sourced from forestry - wood chips, sawdust, bark, etc... (all forestry remnants) - represent the city's primary energy source. Växjö also sources agricultural waste, municipal waste, and other organic biomass waste streams in their bioenergetic production.
Bioenergy represents the major form of renewable energy in Växjö.
Another part of the fossil fuel-free plan includes the installation of solar panels for residences, municipal buildings, and industrial buildings. A relatively small share of energy is brought in from outside the city, with hydropower as the leading source of imported renewable energy.
However, Växjö still remains predominantly known for its production of locally-sourced, organic biomass energy.
Växjö turns waste into energy feedstocks, instead of wasting potentially beneficial organic materials. In Växjö, forestry by-products, and agricultural waste, are transformed into biomass energy, which is fuel for the city's large CHP plant, Sandvik.
Sandvik CHP plant in Växjö - biofuel-based cogeneration plant
Wood chips and other organic biomass feedstocks (produced by logging/ forestry, as well as other forestry/ agricultural organic waste) are the sources of fuel for Sandvik. The need for fossil fuels has dropped steadily in Växjö as biomass has taken over as the dominant low-carbon energy source for the city.
Sandvik uses biomass energy in the combined heat and power process to provide heat to the city of Växjö through district heating. Växjö sources a large share of its district heating from one biomass CHP plant (Sandvik), as well as a smaller share from a few smaller local district heating plants.
Växjö also uses electricity sourced from the Sandvik CHP power plant to power most of the buildings and industry in the city.
In addition to the goal of switching entirely to renewable energy, the majority of which is in the form of local cogeneration, Växjö is focused on expanding sustainable low-carbon transit.
Växjö has been constructing passive zero net energy commercial buildings, passive single-family residential homes, and even passive high-rise apartments.
Växjö meets the city's energy efficiency goals by doing everything from using cogeneration and district heating, to solar panels on public buildings, to the practice of timber construction.
Växjö's building practices increase energy-efficiency, reducing the energy demand to the municipality. The construction of energy-efficient housing allows more resources to be devoted to the reduction of fossil fuel dependence.
Additionally, in passive buildings (construction following Passivhaus standards), the buildings are air-tight and well-insulated, and the windows are double or triple-pane. These energy efficiency building measures ensure that all solar gains - heat from ovens and other appliances, human (and pet) activity, etc... - are trapped inside while the cold outside air is blocked.
By following Passivhaus standards, Växjö homes and high-rises also have ventilators (balanced heat and moisture-recovery ventilation, usually in the attic) that also serve to transport the human-generated heat back into the buildings. Passive buildings are structured to recycle wastewater, which also contains valuable heat.
Residences not connected to the district heating network in Växjö are offered technology by the municipality to convert their home heating systems into renewable energy-based systems.
Newly developed energy-efficient buildings in Växjö implement a variety of modern efficiency standards, such as strictly tested airtightness levels, efficiency standards for ventilation, and smart metering of energy consumption.
There are energy-efficiency training programs for the local builders provided by the municipality. The primary type of new construction in Växjö is wooden passive homes.
In fact, some new homes and buildings constructed in Växjö get enough energy from biomass and solar to actually be plus-energy buildings (generating more energy than the building consumes), similar to residences in Vauban, Germany.
For more on passivhaus construction in Växjö, see:
Here's a summary of ambitious sustainability priorities that Växjö has focused on in its quest to become fossil fuel-free:
"Energy supply -
Växjö has built a combined heat and power plant that produces fossil fuel free heating, cooling and electricity.Household organic waste is collected and made into biogas for buses and cars. The proportion of renewable fuels in the transport sector must increase.
We already know that it is technically possible to produce renewable vehicle fuel in our combined heat and power plant, but it is a major financial risk for one individual actor. Växjö urges the Swedish Government to form an economic structure that makes investments in the production of renewable energy profitable. Växjö urges European local authorities to switch to fossil fuel free energy systems.
Sustainable travel -
Växjö is investing in sustainable travel on foot, by bicycle and by public transport. Our buses run on renewable fuel and we plan to lay cycle superhighways for quick and easy travel within the municipality. Växjö will lead the way in sustainable travel with the implementation of 52 identified measures by 2020.
Växjö is part of a region and we need a simple and attractive regional infrastructure that provides accessibility without fossil fuels. We need high-speed trains via Växjö to open up national and international travel possibilities. Växjö urges the Swedish Government to invest in double tracks on existing railways and in a high-speed track via Växjö and other regional centres. Växjö urges European local authorities to design towns in a way that promote sustainable transport systems.
Buildings -
Passive residential building in Växjö
Växjö builds in wood. We build passive houses, low-energy houses and energy plus houses in close collaboration between the municipality, private sector and academia.
Together with industry and other local authorities in Europe, Växjö is carrying out extensive and innovative energy efficiency improvements in its housing stock.
We are finding it difficult to make sufficiently progressive energy requirements due to the national building regulations being too weak and the law preventing municipalities from setting specific requirements.
Växjö also feels there is a lack of satisfactory methods and procedures to ensure compliance with the building regulations laid down by the Swedish National Board of Building, Planning and Housing (Boverket).
Växjö urges the Swedish Government to give Boverket the task of substantially sharpening the energy requirements of current building norms by prioritizing renewable district heating before electricity as a heating source and ensuring that energy requirements are actually complied with.
Växjö also urges the Swedish Government to once again let Swedish municipalities go first in line in making special environmental and energy demands for land sales. Växjö urges European local authorities to make long-term sustainable investments to reduce the energy consumption of buildings.
Consumption -
Växjö will also take responsibility for its own indirect climate impact, i.e. from our own consumption. A growing world population and limited natural resources demands a change in the raw material flows. We will switch from being a society that continuously seeks new resources, utilises them and then discards them, to a society based on sustainable cycles. Extending the life cycle of products, enhancing the quality of newly manufactured products and facilitating re-use saves enormously on resources.
Växjö will establish a knowledge transfer centre for circular economy, a reuse village and draw up local control measures for promoting circular economy. Växjö urges the Swedish Government to draw up control measures that favour circular economy. Växjö urges European local authorities to promote circular economy.
In Växjö we work transnationally to achieve our goal of becoming free from fossil fuels. Växjö has earned the reputation of being the Greenest City in Europe. Växjö leads the way in creating a fossil fuel free society and does it in broad collaboration.
To make it possible to achieve the goal, clear decisive leadership is required at national and international levels that lead to a more innovative private sector with great economic development potential. Växjö urges the Swedish Government to set a goal of becoming the world’s first fossil fuel free nation and to urge the European Commission to decide on binding climate goals for the European Union."
