# What is the new ore refining formula for Athanor and Tatara citadels? **URL:** \ **Category:** Science & Industry\ **Created:** [November 11, 2017, 1:49pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090 "2017-11-11T13:49:14Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Captain\_Panther](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/captain_panther/32/368735_2.png) [@Captain\_Panther](https://forums.eveonline.com/u/Captain_Panther)\ **Post date:** [November 11, 2017, 1:49pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/1 "2017-11-11T13:49:15Z")
Hi, the old formula was something like this: (Base Facility \* Security Modifier \* (1+ (Refining Skill level \* .03)) \* (1+ (Reprocessing Efficiency skill level \* .02)) \* (1+(Ore specific/ice processing skill level \* .02)) \* (1 + (Processing Implant Percentage/100))) But new refinery citadels are giving us additional 2% and 4% bonuses to refining. How to inject it into the formula correctly? **ANSWER: Refining Yield Modifier \* (1 + (Structure Bonus/100) \* Structure Security Modifier \* (1+ (Refining Skill level \* .03)) \* (1+ (Reprocessing Efficiency skill level \* .02)) \* (1+(Ore specific/ice processing skill level \* .02)) \* (1 + (Processing Implant Percentage/100))** **where Refining Yield Modifier with installed refinery service is 51%** [Refer to this post!](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/25?u=captain_panther) ---
**Author:** ![ISD\_Sakimura](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/isd_sakimura/32/382213_2.png) [@ISD\_Sakimura](https://forums.eveonline.com/u/ISD_Sakimura)\ **Post date:** [November 11, 2017, 3:17pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/2 "2017-11-11T15:17:56Z")
> [@Captain\_Panther](#): > > But new refinery citadels are giving us additional 2% and 4% bonuses to refining. > How to inject it into the formula correctly? So the base Refinery Yield is 50% as always, Structure/Rig Bonus is then added additive giving the following: BaseYield + StructureBonus + RigBonus, this will make the Base Refining yield of a Tatara: 57%, you then apply any SecurityMod/skill-based/implant bonus’ multiplicative (as you did in your post) - Max Refining yield in **Highsec** using a **Tatara** Refinery, is: 57 \* 1.15 \* 1.1 \* 1.1 \* 1.04 = 82.48812% = 82.49% (Rounded up) - Max Refining yield in **Lowsec** using a **Tatara** Refinery, is: 57 \* 1.06 \* 1.15 \* 1.1 \* 1.1 \* 1.04 = 87.43741% = 87.44% (Rounded up) - Max Refining yield in **Null/WH space** using a **Tatara** Refinery, is: 57 \* 1.12 \* 1.15 \* 1.1 \* 1.1 \* 1.04 = 92.38669% = 92.39% (Rounded up) ---
**Author:** ![Captain\_Panther](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/captain_panther/32/368735_2.png) [@Captain\_Panther](https://forums.eveonline.com/u/Captain_Panther)\ **Post date:** [November 11, 2017, 3:39pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/3 "2017-11-11T15:39:53Z")
Thanks for reply. Am I correct in the following: 50% base +4% hull bonus + 3% rig = 57% this is T2 nullsec Tataru 50% base +4% hull bonus + 1% rig = 55% this is T1 nullsec Tataru ---
**Author:** ![Fish\_Hunter](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/fish_hunter/32/248430_2.png) [@Fish\_Hunter](https://forums.eveonline.com/u/Fish_Hunter)\ **Post date:** [November 11, 2017, 8:01pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/4 "2017-11-11T20:01:09Z")
This is max highsec athanor Reprocessing Yield calc Station % - Input 102.00% Rig 53% Reprocessing Skill 115% Reprocessing efficiency skill 110% Ore processing skill 110% implant 104% High/Low/Null 100.00% 78.23% ---
**Author:** ![Fish\_Hunter](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/fish_hunter/32/248430_2.png) [@Fish\_Hunter](https://forums.eveonline.com/u/Fish_Hunter)\ **Post date:** [November 11, 2017, 8:03pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/5 "2017-11-11T20:03:23Z")
Not quite right it is 53% \* 1.15 \* 1.1 \* 1.1 \* 1.04 \* 1.04 = 79.77% ---
**Author:** ![Captain\_Panther](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/captain_panther/32/368735_2.png) [@Captain\_Panther](https://forums.eveonline.com/u/Captain_Panther)\ **Post date:** [November 11, 2017, 8:07pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/6 "2017-11-11T20:07:46Z")
Soooooo, where is the truth guys? 🙂 ---
**Author:** ![ISD\_Sakimura](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/isd_sakimura/32/382213_2.png) [@ISD\_Sakimura](https://forums.eveonline.com/u/ISD_Sakimura)\ **Post date:** [November 11, 2017, 8:11pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/7 "2017-11-11T20:11:59Z")
You’re correct in that the Tech 2 rig makes the base refining yield 53% (or in other words adds +3% to the base 50%) same with the Structure bonus, it adds +2% (for the athanor) to the 53% and that sums up to 55% before all the multiplicative(s) apply or 57% with the Tatara ---
**Author:** ![Fish\_Hunter](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/fish_hunter/32/248430_2.png) [@Fish\_Hunter](https://forums.eveonline.com/u/Fish_Hunter)\ **Post date:** [November 11, 2017, 8:15pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/8 "2017-11-11T20:15:26Z")
I checked a t2 rigged athanor shortly after launch and it was 78% not 79% thus its all multiplication and no addition. ---
**Author:** ![ISD\_Sakimura](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/isd_sakimura/32/382213_2.png) [@ISD\_Sakimura](https://forums.eveonline.com/u/ISD_Sakimura)\ **Post date:** [November 11, 2017, 8:20pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/9 "2017-11-11T20:20:23Z")
I can get 72.4% yield from an unbonused Raitaru (in highsec) with Reprocessing Service module and/or in NPC stations, so if what you say is true, it hardly makes it worth it to even make Refineries with the huge price tag that goes with building them (mostly with Tatara, though). ---
**Author:** ![Mai\_Stormheart](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/mai_stormheart/32/266424_2.png) [@Mai\_Stormheart](https://forums.eveonline.com/u/Mai_Stormheart)\ **Post date:** [November 12, 2017, 1:00pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/10 "2017-11-12T13:00:49Z")
To confirm the formula would be: ((1 + (Structure Bonus / 100)) \* (Refining Yield Multiplier) \* (1 + (Refining Skill Level \* 0.03)) \* (1 + (Reprocessing Efficiency Skill Level \* 0.02)) \* (1 + ( Ore/Ice Specific Processing Skill Level \* 0.02)) \* (1 + (Processing Implant Percentage / 100)) \* Security Modifier) ---
**Author:** ![Captain\_Panther](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/captain_panther/32/368735_2.png) [@Captain\_Panther](https://forums.eveonline.com/u/Captain_Panther)\ **Post date:** [November 12, 2017, 3:00pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/11 "2017-11-12T15:00:37Z")
I took a look at Singularity and I’ve got 76,3% for T1 Rigged Tatara in NullSec. With base chance is only 52%. What the hell? I can’t see any security modifier applied at all. [http://joxi.ru/12MWN8GhMYnGXr.jpg](http://joxi.ru/12MWN8GhMYnGXr.jpg) ---
**Author:** ![Mai\_Stormheart](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/mai_stormheart/32/266424_2.png) [@Mai\_Stormheart](https://forums.eveonline.com/u/Mai_Stormheart)\ **Post date:** [November 12, 2017, 3:49pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/12 "2017-11-12T15:49:23Z")
That doesn’t have a rig fitted. Security modifier only applies when a rig is installed. ``` No Rig A 73.8 HS A1 75.3 HS A2 78.2 LS A1 79.8 LS A2 82.9 NS/WH A1 84.3 NS/WH A2 87.6 No Rig T 75.3 HS T1 76.8 HS T2 79.8 LS T1 81.4 LS T2 84.6 NS/WH T1 86 NS/WH T2 89.3 ``` ---
**Author:** ![Captain\_Panther](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/captain_panther/32/368735_2.png) [@Captain\_Panther](https://forums.eveonline.com/u/Captain_Panther)\ **Post date:** [November 12, 2017, 7:38pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/13 "2017-11-12T19:38:46Z")
Thanks for clarification, probably Singularity still have old data. ---
**Author:** ![Chan\_aar](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/chan_aar/32/377560_2.png) [@Chan\_aar](https://forums.eveonline.com/u/Chan_aar)\ **Post date:** [November 13, 2017, 1:49pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/14 "2017-11-13T13:49:40Z")
Hmm With all skills at 5 I am getting 73.8 out of a high sec Tatara ? ---
**Author:** ![Mai\_Stormheart](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/mai_stormheart/32/266424_2.png) [@Mai\_Stormheart](https://forums.eveonline.com/u/Mai_Stormheart)\ **Post date:** [November 13, 2017, 2:05pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/15 "2017-11-13T14:05:10Z")
got the implant? ---
**Author:** ![Chan\_aar](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/chan_aar/32/377560_2.png) [@Chan\_aar](https://forums.eveonline.com/u/Chan_aar)\ **Post date:** [November 13, 2017, 2:07pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/16 "2017-11-13T14:07:31Z")
A-ha. That explains it, thank you! ---
**Author:** ![Cpt\_King](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/cpt_king/32/233551_2.png) [@Cpt\_King](https://forums.eveonline.com/u/Cpt_King)\ **Post date:** [November 13, 2017, 2:31pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/17 "2017-11-13T14:31:27Z")
maybe the refining calc has a bug on life servers i have on the small cita t2 rig 87.5% and on the large the large with t1 only 86% seems the structure bonus is not counting ---
**Author:** ![Captain\_Panther](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/captain_panther/32/368735_2.png) [@Captain\_Panther](https://forums.eveonline.com/u/Captain_Panther)\ **Post date:** [November 13, 2017, 3:24pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/18 "2017-11-13T15:24:37Z")
Still have some questions. Right now I’m on NullSec Tatarawith T1 rig. It shows: [http://joxi.ru/Drlv9q5svRkLO2.jpg](http://joxi.ru/Drlv9q5svRkLO2.jpg) So the base is 59%. Anything close to it based on security is 53% \* 1,12 = 59,36%. And result would be 82.97% which is not correct. I. 59% / 1,12 = 52,67% the value without applied SS. Base value for citadel with rig is 51%. So 51% \* 1,031 = 52,67 and here it is the 1,031 coeff for 4% tataru bonus. Meeh. Though provided table is good I’m trying to correctly reproduce formula for my calculator. How exactly the base value is caluclated then? ---
**Author:** ![Vivianne\_Athonille](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/vivianne_athonille/32/512723_2.png) [@Vivianne\_Athonille](https://forums.eveonline.com/u/Vivianne_Athonille)\ **Post date:** [November 13, 2017, 4:01pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/19 "2017-11-13T16:01:02Z")
The structure bonus is multiplicative not additive. Treat the rig as an override of the 50% base, then multiply everything else. So for your T1 rigged Tatara above… 51 \* 1.04 (Tatara) \* 1.12 (NullSec) = 59.4048 Multiply the rest from your screenshot and you get 82.6617792 which rounds to 82.7 ---
**Author:** ![Mai\_Stormheart](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/mai_stormheart/32/266424_2.png) [@Mai\_Stormheart](https://forums.eveonline.com/u/Mai_Stormheart)\ **Post date:** [November 13, 2017, 4:05pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/20 "2017-11-13T16:05:16Z")
Refining Yield Modifier \* (1 + (Structure Bonus/100) \* Security 51 \* 1.04 \* 1.12 = **59** (Rounded Down) Above including the skill bonuses = what you get in your screenshot 51 \* 1.04 \* 1.15 \* 1.1 \* 1.1 \* 1.12 = **82.7** (Rounded Up) [Next page](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090.md?page=2)