Method for assessing the potential of miscanthus on marginal lands for high temperature heat demand: The case studies of France and Belgium

Abstract

Energy crops on marginal lands are seen as an interesting option to increase biomass contribution to the primary energy mix. However, in the literature there is currently a lack of integrated assessments of margin land availability, energy crop production potential and supply chain optimisation. Assessing the potential and the cost of these resources in a given region is therefore a difficult task. This work also emphasises the importance on a clear definition and discussion about marginal lands and the related ethical issues embedded in the concept to ensure positive societal impacts of the results. This study proposes a methodology to estimate and analyse, in terms of economic costs, the potential of miscanthus grown on marginal lands from the production to the final point of use. Different datasets are assembled and a supply chain optimisation model is developed to minimize the total cost of the system. Miscanthus is used as a representative energy crop for the Belgian and French case studies. High temperature heat demand is considered as final use. The miscanthus can be traded by truck either in the form of chips or pellets. The results show that the miscanthus on marginal lands could supply high temperature heat up to 38 TWh in France and 1.4 TWh in Belgium with an average cost of around 50 €/t. The different sensitivity analyses showed that the yield variation has the strongest influence on the final cost, together with the distances and the cost of production of miscanthus. The main pattern observed is the local consumption of miscanthus chips and export of the surplus (if any) to the neighbouring regions. Pellets are only of marginal interest for France and are never observed for Belgium. Distances and availability of sufficient feedstocks are the two main parameters impacting the production of pellets.

Navigating Bioenergy Horizons: A Critical Examination of Europe's Potential, with Belgium as a Case Study

“…The drop in grassy crops can thus be explained by a lower exogenous demand or a limitation of land availability in their considerations. Note that those estimations for grassy crops would require between 2 to 3.2% of Belgian territory (considering miscanthus with a yield of 17t/ha and 4.45MWh/t), while sustainable marginal lands cover only 0.7% according to the data from Vera et al [39] as discussed in [40]. Thus, ENSPRESO estimates for energy crops are more optimistic than those of other studies (Fig.…”

“…The order of magnitude of energy crops on lands with limited competing use seems thus to be between 1.5 and 4.4 TWh. Their low estimates match the order of magnitude of [40]. In [40], the authors estimated the potential of miscanthus grown on Belgian marginal lands (with sustainability criteria and a yield threshold) at 1.4 TWh.…”

“…Their low estimates match the order of magnitude of [40]. In [40], the authors estimated the potential of miscanthus grown on Belgian marginal lands (with sustainability criteria and a yield threshold) at 1.4 TWh. With those considerations, we could re-estimate the energy crop contribution to the order of magnitude of 1.5 TWh if only sustainable marginal lands are considered and an additional 1 TWh-2 TWh if arable land is used for energy crops (e.g.…”

“…[39] as discussed in [40]. Thus, ENSPRESO estimates for energy crops are more optimistic than those of other studies (Fig.…”

Exploring the Potential of Perennial Nectar‐Producing Wild Plants for Pellet Combustion

“…In this direction, one of the most challenging services from agricultural systems is the provision of biomass for bioenergy purposes, e.g., for high temperature heat demand. [10][11][12][13]…”