# FUND EmissionsComponent- is this an error? Or am I missing something?

**URL:** <https://forum.mimiframework.org/t/fund-emissionscomponent-is-this-an-error-or-am-i-missing-something/296>\
**Category:** Uncategorized\
**Created:** [July 25, 2024, 4:28pm UTC](https://forum.mimiframework.org/t/fund-emissionscomponent-is-this-an-error-or-am-i-missing-something/296 "2024-07-25T16:28:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pansah](https://avatars.discourse-cdn.com/v4/letter/p/8dc957/32.png) [@pansah](https://forum.mimiframework.org/u/pansah)\
**Post date:** [July 25, 2024, 4:28pm UTC](https://forum.mimiframework.org/t/fund-emissionscomponent-is-this-an-error-or-am-i-missing-something/296/1 "2024-07-25T16:28:55Z")

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HI,

I do not get the idea in these lines of the emissions component of MimiFUND;  
In the initial timestep, you are dividing emissint by energyuse(or GDP); I actually expected a multiplification of emissint by energyuse (as you have done in subsequent timesteps) - since you are using kaya identity. Is this a typo? Am I missing something here?  
if is\_first(t)  
for r in d.regions  
v.energint[t, r] = 1  
v.energuse[t, r] = p.income[t,r]  
v.emissint[t, r] = p.emissint0[r]  
v.emission[t, r] = v.emissint[t, r] / v.energuse[t, r]

In the subsequent time step, it is written as:  
v.emission[t, r] = (1 - v.scei[t - 1, r]) \* v.emissint[t, r] \* v.energuse[t, r] - exactly as I expected. Shouldn’t the initial timestep also be a multiplication as in: v.emission[t, r] = v.emissint[t, r] \* v.energuse[t, r] instead of v.emission[t, r] = v.emissint[t, r] / v.energuse[t, r]?

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**Author:** ![lrennels](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.mimiframework.org/lrennels/32/6_2.png) [@lrennels](https://forum.mimiframework.org/u/lrennels)\
**Post date:** [August 3, 2024, 4:24am UTC](https://forum.mimiframework.org/t/fund-emissionscomponent-is-this-an-error-or-am-i-missing-something/296/2 "2024-08-03T04:24:19Z")

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Hi @pansah thanks for your question! This is probably a question that should be directed at the model authors for clarification, as we Mimi developers don’t actively manage all the models that leverage Mimi. . I wonder if the model documentation would be of help here too ie. [Documentation | FUND Model](http://www.fund-model.org/documentation/), perhaps section _3. Emission, abatement and costs_ in version 3.9: [http://www.fund-model.org/files/documentation/Fund-3-9-Scientific-Documentation.pdf](http://www.fund-model.org/files/documentation/Fund-3-9-Scientific-Documentation.pdf)?

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**Author:** ![pansah](https://avatars.discourse-cdn.com/v4/letter/p/8dc957/32.png) [@pansah](https://forum.mimiframework.org/u/pansah)\
**Post date:** [August 15, 2024, 7:40pm UTC](https://forum.mimiframework.org/t/fund-emissionscomponent-is-this-an-error-or-am-i-missing-something/296/3 "2024-08-15T19:40:24Z")

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Thank you, that was helpful.