Biomass in the electricity system: A complement to variable renewables or a source of negative emissions?
Journal article, 2019

Biomass is often assigned a central role in future energy system scenarios as a carbon sink, making negative greenhouse gas emissions possible through carbon capture and storage of biogenic carbon dioxide from biomass-fuelled power plants. However, biomass could also serve as a strategic complement to variable renewables by supplying electricity during hours of high residual load. In this work, we investigate the role of biomass in electricity systems with net zero or negative emissions of carbon dioxide and with different levels of biomass availability. We show that access to biomass corresponding to ca. 20% of the electricity demand in primary energy terms, is of high value to the electricity system. Biomass for flexibility purposes can be a cost-efficient support to reach a carbon neutral electricity system with the main share of electricity from wind and solar power. Biomass-fired power plants equipped with carbon capture and storage in combination with natural gas combined cycle turbines are identified as being the cost-effective choice to supply the electricity system with flexibility if the availability of biomass within the electricity system is low. In contrast, in the case of excess biomass, flexibility is supplied by biomethane-fired combined cycle turbines or by biomass-fired power plants.

Wind power

Solar PV

Variation management

Bioenergy

BECCS

Electricity system modelling

Author

Viktor Johansson

Chalmers, Space, Earth and Environment, Energy Technology, Energy Technology 1

Mariliis Lehtveer

Chalmers, Space, Earth and Environment, Energy Technology, Energy Technology 2

Linköping University

Lisa Göransson

Chalmers, Space, Earth and Environment, Energy Technology, Energy Technology 2

Energy

0360-5442 (ISSN)

Vol. 168 532-541

Subject Categories

Energy Engineering

Other Environmental Engineering

Energy Systems

DOI

10.1016/j.energy.2018.11.112

More information

Latest update

3/11/2019