# Energy efficiency leading to more simulations?

**URL:** <https://discourse.julialang.org/t/energy-efficiency-leading-to-more-simulations/71789>\
**Category:** Community\
**Created:** [November 19, 2021, 4:36pm UTC](https://discourse.julialang.org/t/energy-efficiency-leading-to-more-simulations/71789 "2021-11-19T16:36:50Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Balinus](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/balinus/32/243_2.png) [@Balinus](https://discourse.julialang.org/u/Balinus)\
**Post date:** [November 19, 2021, 4:36pm UTC](https://discourse.julialang.org/t/energy-efficiency-leading-to-more-simulations/71789/1 "2021-11-19T16:36:50Z")

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Hello!

I need your brain 🙂

Here’s cool repo where energy efficiency is estimated for different languages.  
[https://github.com/greensoftwarelab/Energy-Languages](https://github.com/greensoftwarelab/Energy-Languages)

I remember discussing about an effect “that-has-a-name-I-can’t-remember” where it states that using a more efficient code/language/etc does not lead to less energy consumption because people just do more simulations instead of keeping the number of simulations constant.

Does anyone knows the name of this effect? I remember reading something about that on Wikipedia, I just can’t find the right google search to re-land on this concept! There is the concept of “Induced demand”, but from memory, it was something related to computing. I might be wrong though!

Cheers!

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**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [November 19, 2021, 4:59pm UTC](https://discourse.julialang.org/t/energy-efficiency-leading-to-more-simulations/71789/2 "2021-11-19T16:59:01Z")

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> **[Jevons paradox](https://en.wikipedia.org/wiki/Jevons_paradox)**
>
> In economics, the Jevons paradox (/ˈdʒɛvənz/; sometimes Jevons effect) occurs when technological progress or government policy increases the efficiency with which a resource is used (reducing the amount necessary for any one use), but the falling cost of use induces increases in demand enough that resource use is increased, rather than reduced. Governments typically assume that efficiency gains will lower resource consumption, ignoring the possibility of the paradox arising.
> In 1865, the Engl...

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**Author:** ![baggepinnen](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/baggepinnen/32/693_2.png) [@baggepinnen](https://discourse.julialang.org/u/baggepinnen)\
**Post date:** [November 19, 2021, 5:00pm UTC](https://discourse.julialang.org/t/energy-efficiency-leading-to-more-simulations/71789/3 "2021-11-19T17:00:53Z")

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And the very related [Downs–Thomson paradox - Wikipedia](https://en.wikipedia.org/wiki/Downs%E2%80%93Thomson_paradox)

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**Author:** ![Balinus](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/balinus/32/243_2.png) [@Balinus](https://discourse.julialang.org/u/Balinus)\
**Post date:** [November 19, 2021, 5:01pm UTC](https://discourse.julialang.org/t/energy-efficiency-leading-to-more-simulations/71789/4 "2021-11-19T17:01:15Z")

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Thanks! I knew the first letter was “J” ! 😄