Cortus Energy
Isafjordsgatan 30C
164 40 Kista
Office: +46 (0)8 588 866 30



Even though WoodRoll® is a unique and breakthrough gasification technology that has a number of advantages competition exists. The competition can be divided into three different main categories:






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Fossil energy such as coal, oil and natural gas are from a technical perspective excellent fuels having high energy density, proven and stable quality and available through a built up infrastructure but all fossil fuel cause climate change, which is the huge disadvantage of fossil fuels!

WoodRoll® is a renewable energy solution which is a fundamental competitive advantage against fossil fuels. On cost (price) basis WoodRoll® need in some cases subsidies to be able to reach a competitive cost against fossil fuels. However there are applications and areas where WoodRoll is competitive on a cost basis without any subsidies already from 6 MW e.g. when replacing LPG, LNG and natural gas in the process industry in certain regions e.g. Northern Europe. Further scale up and delivery experience will enhance the competiveness of WoodRoll® and reduce the need of subsidies.

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Other renewable are mainly power generation technologies such as wind, solar, hydro and biomass power technologies. In term of capacity hydro power is much larger and less relevant from a competitive perspective.

In contrast to wind and solar Woodroll® is not dependent on the weather, power output can bet steered towards the actual demand and WoodRoll® can also be used a regulating power to enable more access for weather dependent renewables into the power grid.

When biomass is combusted in a traditional boiler to generate power via a steam turbine the efficiency: biomass to power is significant lower, 40-50% lower, compared to WoodRoll® that generates a gas to power a gas engine that generates power.

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There are two main types of gasification of biomass: anaerobic digestion and thermal gasification, WoodRoll® belong to the latter type.

Anaerobic digestion is a slow process (21 days) requiring large process volumes and therefore have limited scale effects to fit into industrial applications. Anaerobic digestion fits well with wet feedstock such as food waste, wet manure and sludge. It has a low efficiency and produce a high amount of byproduct that can be used as fertilizer so its fits well when there is a need of such byproduct. Anaerobic digestion and thermal gasification need different project prerequisites for e.g. feedstock and does therefore seldom compete with each other’s.

State of the art technologies for mid-size thermal gasification of biomasses are green and renewable but are characterized by a number of weaknesses which prevents them from being technically adequate replacement alternatives for the fossil fuels. State of the art technologies are characterized by: designed for specific feedstock, produce a tar contaminated gas that needs to be cleans and a gas with low heating value (low energy density). WoodRoll® address all these weaknesses, a rough comparison between WoodRoll® and other state of the art gasification technologies looks like:


Other state of the art



Locked to specific design


Feedstock pretreatment

Yes (drying)

No (drying integrated)

Elimination of syngas’

After gasification

Before gasification
(cost effective)

Syngas energy density









Project realization

Site built

Modular concept


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