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Pinne till Panna - En hållbarhetsanalys av ett ökat GROT-uttag från svenska skogar med fokus på Kraftringen Energis kraftvärmeproduktion

Wårfors, Greta LU (2025) FMIM01 20251
Environmental and Energy Systems Studies
Abstract
Reducing carbon dioxide emissions from the energy sector is essential if Sweden is to achieve its climate
target of net-zero greenhouse gas emissions by 2045. Bio-based combined heat and power (CHP), fueled
by residual products from the forest industry, has the potential to contribute to reduced emissions but
only with enough fuel that’s environmentally sustainable. This study investigates the potential to increase
the extraction of logging residues (branches and tops) from Swedish forests, and assess its impact on the
environment and ecosystem services, as well as possible factors influencing the extraction levels. The report
is based on a literature review covering current regulations regarding logging residue extraction, as well... (More)
Reducing carbon dioxide emissions from the energy sector is essential if Sweden is to achieve its climate
target of net-zero greenhouse gas emissions by 2045. Bio-based combined heat and power (CHP), fueled
by residual products from the forest industry, has the potential to contribute to reduced emissions but
only with enough fuel that’s environmentally sustainable. This study investigates the potential to increase
the extraction of logging residues (branches and tops) from Swedish forests, and assess its impact on the
environment and ecosystem services, as well as possible factors influencing the extraction levels. The report
is based on a literature review covering current regulations regarding logging residue extraction, as well as
previous research on its effects on carbon balance, long-term productivity of the forest, and other ecosystem
services such as biodiversity. A case study on the energy company Kraftringen is also included, in which
actual extraction rates from 18 logging sites were calculated with a model from Skogforsk, and the potential
for increased extraction was estimated.
Both the literature review and the case study show that there is an estimated real potential to increase
the extraction of logging residues in Swedish forests without increasing negative environmental impact or
impairing ecosystem services. For Kraftringen’s supplier area, the practically and sustainably achievable
increase is estimated at 19.2%. Precipitation and soil moisture were identified as key factors influencing
extraction levels. Increased logging residue extraction would improve access to domestic biofuels, potentially
reducing reliance on fossil fuels. The case study shows that the climate benefit is particularly notable if
logging residues are used for electricity production, substituting less sustainable energy sources. To conclude,
increased logging residue extraction could support Sweden’s climate transition, but only if it’s managed with
careful trade-offs and strategic compensation measures, such as ash recycling and limited harvesting of coarse
logging residues, to ensure long-term environmental sustainability. (Less)
Abstract (Swedish)
Minskade koldioxidutsläpp från energisektorn är nödvändigt om Sverige ska kunna nå klimatmålet inga net-
toutsläpp av växthusgaser senast 2045. Biobaserad kraftvärme som drivs på restprodukter från skogsindustrin
har möjligheten att bidra till minskade utsläpp men bränslena måste vara miljömässigt hållbara. Detta arbete
undersöker potentialen för ett ökat uttag av grot, grenar och toppar, från svenska skogar och dess påverkan på
miljö och ekosystemtjänster, samt vilka faktorer som påverkar grotuttaget. Arbetet bygger på en litteraturstu-
die av gällande regler och rekommendationer för grotuttag samt tidigare forskning om påverkan på kolbalans,
markens långsiktiga produktivitet och andra ekosystemtjänster som biologisk mångfald. En... (More)
Minskade koldioxidutsläpp från energisektorn är nödvändigt om Sverige ska kunna nå klimatmålet inga net-
toutsläpp av växthusgaser senast 2045. Biobaserad kraftvärme som drivs på restprodukter från skogsindustrin
har möjligheten att bidra till minskade utsläpp men bränslena måste vara miljömässigt hållbara. Detta arbete
undersöker potentialen för ett ökat uttag av grot, grenar och toppar, från svenska skogar och dess påverkan på
miljö och ekosystemtjänster, samt vilka faktorer som påverkar grotuttaget. Arbetet bygger på en litteraturstu-
die av gällande regler och rekommendationer för grotuttag samt tidigare forskning om påverkan på kolbalans,
markens långsiktiga produktivitet och andra ekosystemtjänster som biologisk mångfald. En fallstudie, gjord
på energibolaget Kraftringen, inkluderas också där det faktiska uttaget hos 18 st avverkningstrakter beräknas
med en beräkningsmodell från Skogforsk och den potentiella ökningen av grotuttag uppskattas.
Både litteratur- och fallstudien visar att det finns reell potential att öka grotuttaget i svenska skogar ut-
an en bedömd ökad negativ påverkan på miljö eller skogens förmåga att bidra med ekosystemtjänster. För
Kraftringens leverantörsområde ligger den praktiskt och hållbart möjliga ökningen på 19,2%. Nederbörd och
markfuktighet identifierades som viktiga faktorer för uttagsstorlek. Ett ökat grotuttag ökar tillgången till
inhemskt biobränsle som kan minska beroendet av fossila bränslen. Fallstudien visar att den potentiella kli-
matnyttan är särskilt tydlig om groten används för elproduktion som kan substituera el från andra, mindre
hållbara, produktionsslag. Sammanfattningsvis kan ett ökat grotuttag agera en viktig möjliggörare för Sveri-
ges klimatomställning, men det krävs avvägningar och strategiska kompensationsåtgärder, som askåterföring
och sparsamt uttag av grov grot, för att uttaget ska vara långsiktigt miljömässigt hållbart. (Less)
Please use this url to cite or link to this publication:
author
Wårfors, Greta LU
supervisor
organization
alternative title
From Twig to Turbine - A Sustainability Analysis of Increased Logging Residue Harvesting in Swedish Forests with a Focus on Kraftringen Energi’s CHP Production
course
FMIM01 20251
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
Grot, Miljöpåverkan, Klimatnytta, Bioenergi, Ekosystemtjänster, Resursoptimering Logging residues, Environmental impact, Climate mitigation, Bioenergy, Ecosystem services, Sustainable forestry
report number
LUTFD2/TFEM—25/5231--SE + (1-69)
ISSN
1102-3651
language
Swedish
id
9199300
date added to LUP
2025-06-16 10:19:21
date last changed
2025-06-16 10:19:21
@misc{9199300,
  abstract     = {{Reducing carbon dioxide emissions from the energy sector is essential if Sweden is to achieve its climate
target of net-zero greenhouse gas emissions by 2045. Bio-based combined heat and power (CHP), fueled
by residual products from the forest industry, has the potential to contribute to reduced emissions but
only with enough fuel that’s environmentally sustainable. This study investigates the potential to increase
the extraction of logging residues (branches and tops) from Swedish forests, and assess its impact on the
environment and ecosystem services, as well as possible factors influencing the extraction levels. The report
is based on a literature review covering current regulations regarding logging residue extraction, as well as
previous research on its effects on carbon balance, long-term productivity of the forest, and other ecosystem
services such as biodiversity. A case study on the energy company Kraftringen is also included, in which
actual extraction rates from 18 logging sites were calculated with a model from Skogforsk, and the potential
for increased extraction was estimated.
Both the literature review and the case study show that there is an estimated real potential to increase
the extraction of logging residues in Swedish forests without increasing negative environmental impact or
impairing ecosystem services. For Kraftringen’s supplier area, the practically and sustainably achievable
increase is estimated at 19.2%. Precipitation and soil moisture were identified as key factors influencing
extraction levels. Increased logging residue extraction would improve access to domestic biofuels, potentially
reducing reliance on fossil fuels. The case study shows that the climate benefit is particularly notable if
logging residues are used for electricity production, substituting less sustainable energy sources. To conclude,
increased logging residue extraction could support Sweden’s climate transition, but only if it’s managed with
careful trade-offs and strategic compensation measures, such as ash recycling and limited harvesting of coarse
logging residues, to ensure long-term environmental sustainability.}},
  author       = {{Wårfors, Greta}},
  issn         = {{1102-3651}},
  language     = {{swe}},
  note         = {{Student Paper}},
  title        = {{Pinne till Panna - En hållbarhetsanalys av ett ökat GROT-uttag från svenska skogar med fokus på Kraftringen Energis kraftvärmeproduktion}},
  year         = {{2025}},
}

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