The wood gas produced from wood chips is converted into electricity directly on site in a wood gas CHP unit.
Biomasa, a wood pellet manufacturer in Slovenia, is expanding its Wood Gas Energy Concept 2025 by approximately 1 MWel and 2 MWth with two Spanner Re² GmbH HKA 300 and HKA 600 biomass power plants. The special feature is that: The wood gas power plants can be operated flexibly, tailored to the needs of the electricity grid, and optimised for electricity marketing on the exchange.
Europe's most modern biomass power plant -
with regulated wood gas technology
The future of energy is to generate energy when it is needed
The first 12 wood gasification systems were installed around 10 years ago. In 2025, Biomasa expanded its site by adding an HKA 300 and an HKA 600, both manufactured by Spanner Re². These two wood gas power plants generate a total of approximately 1 MW of electricity and are used daily to meet demand.
Together with PV and battery storage, participating in the electricity market
Electricity generated using wood gas, as well as PV electricity from a 1.8 MW solar field, is marketed directly on the exchange. They can also be fed into an existing 3 MWh battery storage system. This combination of wood gas, PV and battery storage enables the company to present an exemplary energy concept in terms of needs-based, CO₂-friendly and economical power generation. These reliable systems are used when electricity is needed from the grid, typically in the evening rather than at midday. Combined with the storage system and existing PV technology integrated into the energy concept, this approach is particularly efficient for decentralised energy generation and highly flexible energy supply.
Another wood gas CHP unit was installed at the pellet manufacturer's site in 2025 to generate energy. The wood gasifier units below can be operated flexibly and supply energy as and when needed.
Efficient fuel usage through electricity & heat production by using wood gasification
In addition to generating electricity, Spanner Re² GmbH's wood power plants also produce heat according to the combined heat and power generation principle — a significant advantage over conventional biomass boilers designed solely for heat generation. This means that the CHP plant can benefit from the efficient generation of both electricity and heat from wood chips using wood gasification systems. The heat generated from wood gas is utilised entirely via a local heating network with a storage tank, serving both the local community and the company's own operations.
Using wood residues for energy production
The wood residues produced during operation are processed into wood chips and dried in a separate bunker dryer to the required residual moisture for the operation of the energy plants. The two wood gas power plants generate energy in line with future requirements and with maximum efficiency.
