# ECCO-1968 energy structure

**URL:** https://openmc.discourse.group/t/ecco-1968-energy-structure/2257
**Category:** User Support
**Created:** [August 27, 2022, 3:03am UTC](https://openmc.discourse.group/t/ecco-1968-energy-structure/2257 "2022-08-27T03:03:43Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Yohannes](https://avatars.discourse-cdn.com/v4/letter/y/bbce88/32.png) [@Yohannes](https://openmc.discourse.group/u/Yohannes)
#### Post date: [August 27, 2022, 3:03am UTC](https://openmc.discourse.group/t/ecco-1968-energy-structure/2257/1 "2022-08-27T03:03:44Z")

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Dear openmc community,  
I wanted to make a flux tally using the ECCO-1968 energy structure, but it looks like this energy structure is not implemented on openmc yet. Is there any other way to get around this problem?

Kind regards,  
Yohannes

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### Author: ![paulromano](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/paulromano/32/486_2.png) [@paulromano](https://openmc.discourse.group/u/paulromano)
#### Post date: [August 27, 2022, 12:24pm UTC](https://openmc.discourse.group/t/ecco-1968-energy-structure/2257/2 "2022-08-27T12:24:05Z")

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In the latest release (0.13.1), the following should work:

```python
energy_filter = openmc.EnergyFilter.from_group_structure('ECCO-1968')
tally = openmc.Tally()
tally.filters = [energy_filter]
tally.scores = ['flux']

```

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### Author: ![Yohannes](https://avatars.discourse-cdn.com/v4/letter/y/bbce88/32.png) [@Yohannes](https://openmc.discourse.group/u/Yohannes)
#### Post date: [August 29, 2022, 7:50am UTC](https://openmc.discourse.group/t/ecco-1968-energy-structure/2257/3 "2022-08-29T07:50:08Z")

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Thank you, Paul. I have the 0.12.2 it’s about time to update.