Largest energy model you've solved using (a recent release of) the HiGHS-solver

Hi openmod’ers!

Just out of interest I’m wondering what’s the largest energy model you’ve been able to solve using HiGHS? Profiling data is quite scarce as far as I am aware. Also, the rapid development of HiGHS might make the few data points I’ve found outdated.

I’m specifically curious to learn about models that work for a whole year, using hourly temporal resolution. I’ve tried to run PyPSA-EUR for a 30 node, H2+electric network. But HiGHS did not seem to be able to pass the presolve step. Might be down to my hardware specs.

Thank you in advance for sharing your insights!

Warm regards,

Seth (PyPSA server) gives some indication for sector-coupled mode:

193-hourly temporal resolution takes only around 5 minute to solve, but gives reasonable results. This model can only be run at up to 25-hourly resolution for Europe ([one node per country], 25-hourly takes around 16 hours to run) or 3-hourly for single countries (3-hourly takes up to 8 hours to run).

No result for PyPSA-Eur, but I also try to keep track of HiGHS progress here:

This runs every Tuesday morning with all PyPI versions available, but the problem size is relatively small.

Please note the forum tag solver-performance.