# Which BEM solver / forward model to use – "mne" or "openmeeg"?

**URL:** <https://mne.discourse.group/t/which-bem-solver-forward-model-to-use-mne-or-openmeeg/10630>\
**Category:** Support & Discussions\
**Tags:** source-localization\
**Created:** [December 15, 2024, 11:41am UTC](https://mne.discourse.group/t/which-bem-solver-forward-model-to-use-mne-or-openmeeg/10630 "2024-12-15T11:41:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![richard](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/richard/32/15_2.png) [@richard](https://mne.discourse.group/u/richard)\
**Post date:** [December 15, 2024, 11:41am UTC](https://mne.discourse.group/t/which-bem-solver-forward-model-to-use-mne-or-openmeeg/10630/1 "2024-12-15T11:41:00Z")

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Since MNE-Python 1.2, OpenMEEG can be used to generate a BEM solution and to derive the forward model. When would I want to choose this option if I’m only working with EEG and MEG data (no iEEG)? Would it even matter in that case? I didn’t find any help on this in the documentation.

Thanks!  
Richard