In the present study are described the findings of the research regarding the most
valid and accurate way of measuring greenhouse gas emissions (GHGs) in agriculture
and especially for agricultural greenhouses. This research identifies ways to compare
the carbon footprint of different energy sources for covering the energy demands in
greenhouse cultivations.
A case study of an experimental greenhouse powering its energy needs with off grid
PV solar system was analyzed. Through an LCA cradle to gate study, and with the use
of SimaPro tool, the carbon footprint of the greenhouse construction components and
systems were quantified in kg of CO2
equivalents. The GWP100 of fossil, biogenic and
land transformation subcategories of climate change impact category were quantified
for all components of the greenhouse.
Based on the results of the research the carbon footprint of a PV system is
significant at its construction face but through its total life cycle the environmental and
economic benefits of its use are multiple times greater than of fossil fuels. The
comparison can be made for different energy resource scenarios and even different
project cases or different system options in a case study.
Due to climate change the ability to quantify the carbon footprint of a production
process becomes important and agriculture has high energy needs and infrastructure
requirements. The research identifies the best approach to measure and quantify
GHGs and compare different concepts of infrastructure and energy resources for
greenhouse agricultural production.
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