Dilithium


 * Due to ongoing PvE queue and reward balance changes in Delta Rising, some dilithium reward amounts listed below may be incorrect.

In Star Trek Online, Dilithium is a major form of currency predominantly earned and used in the end game. Players can use dilithium to purchase various things ranging from new ships when the player reaches a new rank to new officers, equipment (Space and ground), upgrading or re-engineering equipment, and via crafting materials.

Dilithium is further subdivided into 2 separate sub-currencies:
 * Dilithium Ore (icon: ) The currency is initally given out to characters as Dilithium Ore, which is a time-based currency (~480 per 15 minutes of gameplay according to Cryptic) in that it is obtained from certain missions, mostly repeatable every 20 hours, that require time for a player to complete. Currently the only use for Dilihium Ore is refining it into Refined Dilithium (see below). Refining is available via the following methods (if an account has multiple characters, the below limits apply to each character independently):
 * Using the ship's Inventory Asset tab: up to 8000 >>>  per character per day.
 * Assignment :
 * Given by Mining Foreman at Fleet Dilithium Mine: 500 >>>  per character per day.
 * Given by Veteran Dilithium Refiner: 1000 >>>  per character every two days.
 * Refined Dilithium (icon: ). Refined Dilithium can be used in the following ways:
 * Traded to other players for another premium currency, Zen via the Dilithium Exchange.
 * Transferred to other characters on the same account (with some risk) via the transfer process.
 * Used to buy certain Starships (mostly lower tier, up to tier 5) from Starship Requision Officers located in all the major social hubs, such as Deep Space 9, Earth Spacedock, First City and New Romulus Command.
 * Used to buy premium items from Dilithium Store, accessible from ship's Inventory Asset tab.
 * Used to buy premium Reputation equipment/consumables.
 * Used to buy premium Fleet equipment/services/consumables.
 * Used to speed up Research and Development tasks.
 * Transfer to a character on another account, or Convert to Energy credits. Note that it is not possible to convert Refined Dilithium into Energy Credits directly, and neither it is possible to transfer Refined Dilithium dirrectly between accounts (e.g. if you wished to give your friend a gift of some Refined Dilithium). Nevertheless, it is possible to send your friend a gift of non-bound items that need Refined Dilithium as an ingredient to be acquired, or to sell these items on the Exchange for . Of course, it is also possible to simply keep and use such items on the acquiring character, and these items include:
 * Bridge Officers acquired from Category: Bridge Officer Vendors.
 * Duty officers acquired from for certain Duty officer assignments given out by Personnel Officer.
 * Certain Research and Development resulting items.
 * Equipment items upgraded via the Gear Upgrade System.
 * Equipment items with newly re-engineered modifiers.
 * Fleet project donations.

Each character has a 10 million Dilithium Ore balance limit and also a 10 million  Refined Dilithium balance limit at any given time. Any Dilithium Ore or Refined Dilithium received to exceed these balance limits would be lost.

Academy Lore mission

 * - 480
 * - 480

Fleet missions

 * - up to 2480 (5010 with mining event) for a Fleet Dilithium Mine Tier 3
 * Fleet Research Lab R&D Daily Task Missions - 1200 (1800 with mining event) for a Fleet Research Lab Tier 2

Borg Invasion

 * Borg Deep Space Incursions - 480 (per day and sector block)

Alpha Quadrant

 * - up to 1000 (2025 with mining event)
 * - up to 5000 (10,001 with mining event)
 * - 1440
 * - 480
 * - 480

Beta Quadrant

 * Tholian Incursion on Nukara Prime - min level 50
 * - 640
 * (250 kills) - 640
 * - 480
 * - 480
 * - 480
 * - 2400
 * - 960 [available every 30 minutes]
 * - 960 [available every 30 minutes]
 * New Romulus
 * - 320
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480 (+ 30 )
 * Nimbus III
 * - 480
 * - up to 680
 * - 480
 * Open missions - 60

Solanae Dyson Sphere

 * Ground Battlezone missions
 * Up to 60 per point capture
 * Up to 3600? for assisting in defeating all 3 V-Rex bosses
 * - 50, 960
 * - 25, 480
 * - 10, 240
 * - 0–960
 * Undine Battlezone missions
 * Up to 60 per point capture
 * 42, 10 per Planet Killer boss defeated
 * 360 bonus for assisting in defeating 1 Planet Killer
 * 1080, 35 bonus for assisting in defeating 2 Planet Killers
 * 2520 bonus for assisting in defeating all 3 Planet Killers

Patrols

 * Main article: Patrol

Completing any Patrol rewards 500, plus an additional 500 for the first patrol completed each day, per character.

Task Force Operations

 * Main article: Task Force Operation

All Task Force Operations, including STFs and Special Events accessible from the TFO queue menu, grant a set amount of dilithium upon completion according to their difficulty level: You may also choose to play a Random TFO, which will grant a random bonus reward of 500 to 2500 on Normal difficulty, or 700 to 3500  on Advanced difficulty.
 * Normal - 360
 * Advanced - 720
 * Elite - 1,440

PvP and global PvE

 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 1440
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480
 * - 480

Empire Defense

 * - 1440
 * - 1440
 * - 1440
 * - 1440

Missions no longer rewarding dilithium

 * - 1440
 * - 1440
 * - Roughly 1500-3000 on average (up to 6900 with luck)
 * - 480
 * - 1440
 * - 1440 [available for 10 ]

Fleet actions
Fleet actions were older Task Force Operations that rewarded 480 for space, and 640  for ground maps. There was also a daily mission for a random fleet action rewarding 960 and 50. They are currently unavailable.
 * - 480
 * - 480
 * - 480
 * - 640
 * - 640
 * - 480

Foundry
Foundry has been shut down in April 2019. Authors of user-generated missions can also be donated 25, 50 or 100 (refined!) by any player who completes their missions.
 * Dilithium is automatically rewarded based on the average playtime of a user-generated mission - Ca. 480 per 15 minutes
 * Once every 15 hours, the first spotlight mission completed in that time frame will get a bonus 1440
 * - 960

Duty Officer Assignments
Most Duty Officer Assignments provide a small amount of Dilithium (usually between 5 to 50, with 125 to 150 on critical success) and a few provide larger quantities.
 * Repeatable assignments awarding over 50 on a non-critical success are (with rewards shown for non-critical / critical):
 * - 2000 / 2000
 * - 1000 / 4000
 * - 1000 / 2500
 * - 750
 * - 500 / 2000
 * - 500 / 1500
 * - 500 / 1500
 * - 500 / 1000
 * - 350 / 1000
 * - 250 / 1000
 * - 150 / 650
 * - 150 / 650
 * - 125 / 125
 * - 100 / 626
 * All repeatable assignments awarding over 50 on a non-critical success:
 * Category: Repeatable assignments rewarding over 50 Dilihium Ore on non-critical.
 * All repeatable ssignments awarding 50 on a non-critical success:
 * Category: Repeatable assignments rewarding 50 Dilihium Ore on non-critical.

Projects
All projects rewarding 800 or 2000 reputation points give 140 or 340, respectively. There are also special projects which grant more dilithium: Continued support projects are more profitable than exchanging marks via "Ongoing Efforts" Projects in the long term as they offer a better mark to dilithium ratio (~1:23 vs 1:10) but need to be reslotted and filled once per hour for maximum efficiency.
 * 8472 Counter-Command: "Provide Isomorphic Injections to 8472 Counter-Command" - 1000
 * 8472 Counter-Command: "Ongoing Efforts Against the Undine" - 500
 * Dyson Joint Command: "Provide Cybernetic Implant Samples to Dyson Joint Command" - 1000
 * Dyson Joint Command: "Ongoing Efforts Against the Voth" - 500
 * New Romulus: "Ongoing Diplomatic Efforts" - 500
 * Nukara Strikeforce: "Ongoing Strikeforce Aid" - 500
 * Task Force Omega: "Elite Special Task Force Completion" - 1000
 * Task Force Omega: "Ongoing War Efforts" - 500
 * All Reputations: "Continued support (hourly)" - 340 in exchange for 15 reputation marks, 1000 expertise and 7500 Energy Credits. Also awards a requisition pack.

Tier 5 reward
These rewards can be claimed once per character:
 * - 9,000
 * - 32,000
 * - 32,000 automatically upon completion of the Tier V upgrade project
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000
 * - 32,000

Duty Officers
Lt. Ferra at Starfleet Academy and Lt. S'stas at Klingon Academy are selling Duty Officers of Uncommon and higher quality for Dilithium.

Season 5 Conversion
For Season 5, players had many currencies converted to dilithium (at the following rates, up to the first 160,000 dilithium) :
 * Emblems (336 dilithium)
 * Mark of Honor, Mark of Exploration, Mark of Valor (201.6 dilithium)
 * All five Badges of Exploration and all five Medals (13.44 dilithium)
 * Merits and Honor (0.168 dilithium)

Dilithium Vouchers
Q: What are “Fleet-Only Dilithium” and “Reputation-Only Dilithium”? A: These are special Vouchers that fulfill the same purpose as existing Dilithium, but can only be used to fulfill Project requirements for the respective features, either Fleets or Reputations. These Dilithium Vouchers does not need to be refined, and cannot be traded for Zen. Projects that require Dilithium will deduct from the appropriate Voucher pool before deducting from your Refined Dilithium.