Documentation:Brightway Tutorials

Basic information about Brightway2

• Software website
• Developer group page
• Github repo

Other open-source libraries/scripts of the Brightway ecosystem

• Wurst (to modify the ecoinvent database)
• Premise (to match the ecoinvent database with the output results from Integrated Assessment Model (IAMs) such as IMAGE and REMIND) and scenarios dashboard
• Temporalis: an open source software for dynamic LCA
• ActivityBrowser: a GUI for Brightway2
• List of other extensions

Tutorials

Classic tutorials from the developers

• Getting started with Brightway2(this notebook provides a basic introduction to Brightway2 functionality)
• Brightway2 example notebooks (Jupyter notebooks to demonstrate key features of Brightway2)
• Brightway2 Seminar 2017 (a comprehensive workshop on how to use Brightway2)
• "Learn Brightway" Book
• Teaching material for Brightway2.5 (this notebook provides tutorials for Brightway2.5 functionality)
• Wurst and Premise training materials (from Romain Sacchi, the developer of Premise)

Tutorials contributed by others

• Brightway for Beginners (a 8-hour course to learn Brightway2, developed by Massimo Pizzol at Aalborg University)
• Brightway tutorial by Maximilian Koslowski (all-in-one Jupyter notebook for basics of Brightway2)
• Brightway beginners internal ecoinvent training materials(based on Brightway 2.5)

Use cases

• Reallocating combined heat and power datasets in Brightway
• Script for digging out LCI of interest via recursion
• A simple LCA calculator using Brightway2 | demo

Frequently asked questions (FAQs)

• FAQs from official webpage
• Discussions from stack overflow
• Where is my “Project” folder?
  • see “How do I find where my data is saved?”
  • also, you can find the location of your projects by executing bw.projects.output_dir
• Where can I find the Excel template for importing inventory data?
  • see the class of  ‘ExcelImporter’ for details
• Why is it taking me forever or Why am I in an infinite loop while importing ecoinvent database?
  • if you are using SingleOutputEcospold2Importer(), explicitly specify use_mp = False. See example: ei36_conseq = bw.SingleOutputEcospold2Importer(ei36_path, 'ecoinvent_3.6_conseq', use_mp = False). You should be able to see the progress bar afterwards
  • possible cause of this issue explained: stack overflow

• Why are there so many unlinked exchanges when I try to import ecoinvent 3.8 (ecospold2)? The code worked fine for ecoinvent 3.7 or lower versions?
  • see answer here: stack overflow
• Negative production for end of life treatment process: stack overflow

• What can I do when I encounter error messages?
  • don't panic, read the error message carefully, in many case it only needs a quick fix of your own code
  • copy and paste the error message in Google, you may find a similar question already been ask on the StackOverflow
  • still stuck? look up the code document and GitHub repo (you may discover some known issues)

Brightcon

• Notebooks and accompanying data files for Brightcon 2022

LCA Statistics

Key concepts to understand statistical approach to LCA:

• Monte Carlo method
• Statistical hypothesis testing
• Parametric statistics
• Nonparametric statistics
• Normality test
• t-test
• Wilcoxon signed-rank test

Useful Python Documentation for statistical functions in Brightway2:

• Shapiro-Wilk test
• Paired t-test
• Wilcoxon signed-rank test