Questions & Answers

Wood pellets can be described as sticks of pressed wooden material – i.e. wood fibres with a high energy content – and usually consist of sawdust or shavings. Wood pellets are approximately 6 or 8mm in diameter and 2-3cm long. The production of pellets can be seen as a way of “refining sawdust” into a storable and transport-efficient fuel that can displace large amounts of energy from the forest to the end users.

Wood pellets are made of residual products from the wood industry, often in the form of sawdust or shavings.

No. Pellets are solely produced out of residual materials.

Yes. According to the Swedish Environmental Protection Agency, pellets emit 19 kilograms of CO2/MWh, as opposed to, for example, heating oil (248 kilograms of CO2/MWh).

Yes. Burning pellets results in the same amount of CO2 as is absorbed by the original tree during its life cycle. Either way, the tree will eventually die and, even then, the same amount of CO2 will be emitted as when it is burnt.

According to the Swedish Environmental Protection Agency, pellet combustion emits 19 kilograms of CO2/MWh.

No. Pellets are by far one of the most affordable forms of energy. See our comparative calculations at

As with all raw materials, the price of pellets varies over time. However, when looking at its price development since 2009, it can be observed that the price of pellets has been the most stable compared to other fuels.

Availability is very good in Sweden, the Nordic countries and Europe. Current levels can be significantly increased should the need arise.

Since pellets are a solid fuel, more ash is produced than when using fossil fuels such as oil or gas. However, present-day equipment is fully automatic in terms of sooting and ash feeding. As a rule, the plant undergoes one substantial maintenance operation per year.

Depends on each market, contact us for correct info.

In cases where you need to have plants with power above 4 MW – and at the same time fast power regulation – wood powder is the best option. In addition, some industries rely on different bioenergy materials for their own production. That material can be dried and made into powder for combustion.

In cases where plants with power above 4 MW and fast power regulation are needed, wood powder is the best option.

A variety of mills for grinding wood pellets into wood powder are available on the market.

In cases where plants with power above 4 MW and fast power regulation are needed, wood powder is the best option.

A pellet burner can only handle power up to 2 MW, whereas a powder burner can handle up to 50 MW.

Considering the use of wood pellets in both cases, there is no difference in fuel cost.

In cases where plants with power above 4 MW and fast power regulation are needed, wood powder is the best option.

Technically advanced plants with many components.

Wood chips are usually the cheapest fuel, but also the “slowest” fuel, i.e. fast power regulation works poorly. A wood chip plant is also more expensive than a pellet plant and requires significantly more space as chip storage takes up a large area.

As with all forms of energy, prices change over time.

No, they both work. It can be assumed that ‘the wetter, the cheaper’. However, the downside of using wet wood chips is that much of the energy is spent burning off the water in the wet wood chips, which results in lower energy production.

Yes. However, it should be noted that the cost of bio-oil per MWh is higher than for wood pellets/wood powder.

Natural gas is a fossil fuel, and a rather expensive one at that. Yes, it is possible to use natural gas in a BKtech plant. However, such use is discouraged as it has no positive effect, neither environmentally nor economically.

LPG is a fossil fuel, and a rather expensive one at that. Yes, it is possible to use natural gas in a BKtech plant. However, such use is discouraged as it has no positive effect, neither environmentally nor economically.

Biofuels is a collective term for fuels made from organic material, i.e. plants, sludge from treatment plants or slaughterhouse waste. Biofuels act as energy carriers from which energy can be extracted. Biofuels can be gaseous such as biogas, liquid such as ethanol or solid such as chips and pellets.

Biofuels will be important as we move to fossil-free and renewable energy production. Solar and wind power alone will not solve all energy problems. As far as energy prices are concerned, all energy is likely to become more expensive over time. However, the price difference between renewable and fossil-free fuels compared to fossil fuels will either persist or increase.

When using wood pellets, the fuel is stored in a silo. The fuel is then transported to a burner that is mounted in the plant. It is the same for wood powder, but before being burned, the fuel also passes through a mill and a doser. When it comes to wood chips, it is basically the same principle, but the chips are stored in woodchip stores that take up a lot of space.

Bioenergy is a renewable energy source produced from biomass, such as plants and plant parts. Bioenergy can contribute to climate change mitigation.

None.

Yes, if the biomass used meets renewability standards.

Yes, since it is both renewable and fossil-free.

Residual products are materials that are unintentionally produced or formed as a result of or in the process of manufacturing a product. For example, sawdust is formed when boards are sawn from timber.

Using residual products improves the circular economy, as does all recycling.

Today, bioenergy is mainly used for heating, mostly in district heating networks. However, the industrial use of bioenergy is growing year by year.

Yes. Bioenergy is usually the most affordable form of energy.

In BKtech’s production plant in Blomstermåla, southern Sweden.

We can ensure that all quality requirements are met and that production is cost-effective.

1 to 2 months.

The majority of BKtech’s plants are about 3.7m wide, which means that they can be transported on ordinary cargo trucks.

No. BKtech offers a variety of plants. Learn more about our bioenergy plants here.

No. Our plants are very dimensionally efficient, with typical dimensions of 3.7m x 12.0m.

Steam, hot water, heated oil and warm water.

BioOne, 700 kW.

BioMax, 15 MW, but it is possible to combine several plants to obtain 15, 30, 45 MW, and so forth.

That they are easily relocated.

Plant production in Blomstermåla is cost-effective, as demonstrated by our prices. In addition, a modular plant can be easily transferred between a client’s different production sites. In addition, the plants can be easily resold due to their mobility and modularity.

No. Our plants are very dimensionally efficient, with typical dimensions of 3.7m x 12.0m.

As close to the existing plant as possible, to minimise the cost of integration at the client’s site.

Most fuels can be used in a BKtech plant . However, experience shows that wood pellets are the best fuel alternative thanks to their price and the fact that they are fossil-free.

It depends on the selected energy source. For more information, please refer to our product descriptions.

Great! You should get in touch with us straight away.

Yes. However, if so desired, silos can be opted out. In this case, their supply will be your responsibility.

Our plants are built as self-supporting steel structures, so that an entire plant can be lifted with all the respective equipment still inside.

In most cases we use Siemens control systems. In the case of wood chip plants, control systems are provided by Abelco.

With regard to steam and hot water, we use boilers made by the Swedish manufacturer VEÅ. As far as hot oil and hot water are concerned, we rely on Sugimat equipment. And for hot water, we use boilers from both VEÅ and Ariterm.

We use pellet burners supplied by Ariterm and multifuel burners by WTS, a company within the BKtech Group.

BKtech offers a large selection of flue gas cleaning systems – everything from bag filters, electric filters and ceramic filters.

Before the flue gases are released through the chimney, they pass through a filter that captures, among other things, particulate matter, NOx and other gases.

At BKtech, we use several types of flue gas fans. The most common are fans manufactured by JM Stoftteknik.

Yes, we have a number of different milling solutions.

A powder dispenser is a device fitted between a mill and a powder burner.

Through the use of additives such as urea in the flue gas cleaning, NOx emissions can be minimised. This works much like catalytic converters in cars.

A multi-fuel burner is capable of handling several types of fuel, even at the same time.

If you have access to several fuels from your own production, it will be cost-effective. Oftentimes it is used as a backup solution.

Wood powder, gas and oil.

Yes. However,if you currently have a fossil-fuel burner and intend to use wood powder after replacement, the maximum power output will drop.

We deal with steam, hot water, hot oil and heat.

Find out more in our product descriptions or contact us for an ad hoc consultation.

Find out more in our product descriptions or contact us for an ad hoc consultation.

Find out more in our product descriptions or contact us for an ad hoc consultation.

Warm water plants handle temperatures up to 110° C, while hot water plants handle temperatures above 110° C.

Find out more in our product descriptions or contact us for an ad hoc consultation.

Yes. We have extensive experience in helping clients in a wide variety of industries economise on energy and money. Learn more about Our services or contact us for further information.

Yes. We have extensive experience in helping clients in a wide variety of industries economise on energy and money. Learn more about Our services or contact us for further information.

Yes. We have extensive experience in helping clients in a wide variety of industries economise on energy and money. Learn more about Our services or contact us for further information.

It means using non-fossil fuels as energy sources instead of fossil fuels such as oil, natural gas or coal.

By switching to fossil free alternatives, such as bioenergy.

Bioenergy in the form of solid wood fuels (e.g. wood pellets or chips), biogas, bio-oil or green electricity.

Bioenergy is a renewable energy source and thus contributes to a circular economy.

In addition to the possibility for you to invest in a plant, we also offer leasing and energy supply contracts whereby we own the plant and you purchase fossil-free energy from BKtech.

The pay-off time is largely determined by your consumption of fossil fuels. The higher the consumption, the shorter the time. In most cases, and at today’s energy prices, about 2-4 years.

It all depends, of course, on the type of plant (steam, hot water, hot oil or heating) required. If you have a consumption of at least 700 MWh/year, your pay-off time will be approximately 2-4 years. Switching to a new fossil-free energy plant always pays off for our climate.