[pypsa-eur] Error while running Tutorial:Electricity-Only

[Jan Hendrik Smeets]

Dear pypsa community,

I have encountered an error while trying to run the Electricity-Only Tutorial in pypsa-eur.

The config-file I used is the same as in the tutorial only with the solver beeing gurobi instead of glpk.

I attached the log and config file down below.

I would appreciate any help or insights on how to solve this due to me beeing new to pypsa-eur.

Best

Jan Hendrik Smeets

[Robert Duy]

Hi!

I am experiencing the exact same error when trying to run the mentioned tutorial with an up-to-date environment and the default solver (glpk+glpk-default).

Do you already have a solution to your problem? Shall we open a github issue for this?

Best,

Robert

[Fabian Neumann]

Hi Robert,

What are your specific errors? The logfile referenced above does not contain much information which we can help with.

Best wishes,

Fabian N

[Robert Duy]

Hi Fabian,

I gave it another shot and attaching the relevant files. Please let me know if something is missing.

The specific error is:

File "C:\Users\RD\mambaforge\envs\pypsa-eur\lib\site-packages\xarray\core\alignment.py", line 312, in assert_no_index_conflict
    raise ValueError(
ValueError: cannot re-index or align objects with conflicting indexes found for the following coordinates: 'Generator' (2 conflicting indexes)
Conflicting indexes may occur when
- they relate to different sets of coordinate and/or dimension names
- they don't have the same type
- they may be used to reindex data along common dimensions

What I already found is your issue on github with xarray: https://github.com/pydata/xarray/issues/6881

The error is the same, but funnily enough, I can run the MVE from the MVE in my environment.

And a question that came alongside: Is the output from the terminal saved at some place? '.snakemake\log\2023-11-29T094442.121439.snakemake.log' is different from it, as it does not contain the information about the specific error. The attached file 'terminal.log' is copied & pasted.

Thanks for your time & effort in advance!

Best,

Robert

[Robert Duy]

I meant to attach this file instead of 'terminal.log':

[Fabian Hofmann]

Hey Robert,

could install the full error stack? And could you install pypsa directly from the master and see whether the problem persists?

pip install git+https://github.com/pypsa/pypsa.git@master

Best wishes,

Fabian

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Fabian Hofmann 

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Institute of Energy Technology
Technische Universität Berlin
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Group website: https://www.tu.berlin/ensys

[Jan Hendrik Smeets]

Hey everyone,

I installed a new environment with the env-file from github but with the xarray version beeing the newest (2023.11.0) and no errors occured running the tutorial or other configs.

Best wishes,

Jan Hendrik

[Fabian Hofmann]

Great, thanks for letting us know, Jan! Hopefully that will solve it for the others.

Best

Fabian Hofmann

To view this discussion on the web, visit https://groups.google.com/d/msgid/pypsa/9ac44391-11a3-4020-a60e-83c5267e6f21n%40googlegroups.com.

[Robert Duy]

Hey all,

just updating xarray to (2023.11.0) in my env solved this problem for me too. Thank you very much!

I guess this means that the tutorial on https://pypsa-eur.readthedocs.io/en/latest/installation.html is currently not working. Following the installation steps, the environment.yaml is explicitly set-up with xarray<=2023.8.0.

Fabian, I could not follow you with the full error stack. But I guess we won't need it. In case, just let me know.

Best,

Robert

[Thomas Kouroughli]

Robert are you running the electricity-only tutorial with estimate_renewable_capacities from_opsd: true? Wondering whether the default here should be changed or if it's another dependency issue. 

For me the tutorial fails with the following error unless I set from_opsd: false 

Using OPSD renewable capacities for carriers offwind-ac, offwind-dc, onwind, solar.
Traceback (most recent call last):
  File "/Users/adminuser/Documents/Coding/TransitionZero/pypsa-eur/.snakemake/scripts/tmp9365bwg3.add_electricity.py", line 899, in <module>
    attach_OPSD_renewables(n, tech_map)
  File "/Users/adminuser/Documents/Coding/TransitionZero/pypsa-eur/.snakemake/scripts/tmp9365bwg3.add_electricity.py", line 734, in attach_OPSD_renewables
    caps = map_country_bus(df.query("Fueltype == @fueltype"), buses)
  File "/Users/adminuser/mambaforge/envs/pypsa-eur/lib/python3.10/site-packages/powerplantmatching/export.py", line 105, in map_country_bus
    return pd.concat(res)
  File "/Users/adminuser/mambaforge/envs/pypsa-eur/lib/python3.10/site-packages/pandas/core/reshape/concat.py", line 372, in concat
    op = _Concatenator(
  File "/Users/adminuser/mambaforge/envs/pypsa-eur/lib/python3.10/site-packages/pandas/core/reshape/concat.py", line 429, in __init__
    raise ValueError("No objects to concatenate")

ValueError: No objects to concatenate