Stockpiles
Stockpiles are single-use consumables that generate a flat amount of 
Food, 
Industry, or 
Science.
Mechanics
A basic Food Stockpile, Industry Stockpile, or Science Stockpile generates 100 of its respective resource. A or stockpile applies to a single city, while the stockpile applies to the empire as a whole.
Stockpiles cannot be built until Unskilled Labor, Organized Labor, or Pearl Hoarding is unlocked. These have the following additional effects:
- The Era III technology Unskilled Labor increases stockpile yields by 500 and makes them more expensive to produce.
- The Era IV technology Organized Labor increases stockpile yields by 1000 and makes them more expensive to produce.
- The blessing Pearl Hoarding which unlocks alternative ways to create each type of stockpile. These cost less Industry than the standard construction, but require
8 Pearls per stockpile.
See the #Summary Table below for more details on costs and yields.
Stockpiles do not stack, and using multiple stockpiles of the same type will not increase the yield but will instead extend the duration of effect. For example, using three stockpiles in the same city will give +100 per turn to the city for three turns. Stockpile yields are not affected by percentage bonuses like the Mill Foundry, Luxury Resources, or governor skills.
ELCP Changes
The Endless Legend Community Patch makes the following changes to stockpiles:
- Costs are generally reduced.
- Production costs, market price, and yields scale with Game Speed, except Necrophage's Recycled Stockpiles.
- Example: A level 2 Industry Stockpile costs 900 and yields 600 on Normal game speed, but costs 450 and yields 300 on Fast.
- Example: A level 2 Industry Stockpile costs
- Upgrading Stockpiles to the next level will also reduce their amount by half, rounded up in the player's favour. This can be deactivated in the Advanced Game Settings.
- Examples:
- 10 level 0 Industry Stockpiles (10x +100 Industry) will be upgraded to 5 level 1 Industry Stockpiles (5x +600 Industry) after researching "Unskilled Labor".
- 5 level 1 Industry Stockpiles (5x +600 Industry) will be upgraded to 3 level 3 Industry Stockpiles (3x +1600 Industry) after researching "Organized Labor".
- 10 level 0 Industry Stockpiles (10x +100 Industry) will be upgraded to 3 level 2 Industry Stockpiles (3x +1100 Industry) after researching "Organized Labor" without researching "Unskilled Labor" first.
- Examples:
Summary Table
| Unskilled Labor |
Organized Labor |
// Yield |
Vanilla | ELCP | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Regular | Pearl Hoarding
|
Regular | Pearl Hoarding
| |||||||
| Cost
|
Ratio | Cost
|
Ratio | Cost
|
Ratio | Cost
|
Ratio | |||
| 100 | - | - | 100 | 1 | - | - | 100 | 1 | ||
| Yes | 600 | 1200 | 0.5 | 600 | 1 | 900 | 0.67 | 450 | 1.33 | |
| Yes | 1100 | 2500 | 0.44 | 1100 | 1 | 2000 | 0.55 | 850 | 1.29 | |
| Yes | Yes | 1600 | 2500 | 0.64 | 1600 | 1 | 2000 | 0.8 | 1200 | 1.33 |
Note that in ELCP, stockpile yields and costs also scale with Game Speed.
Faction-Specific
Necrophages
Necrophages' Recycling trait generates Recycled Stockpiles from units (friendly or enemy) dying in battle. One Recycled Stockpile is gained for every 8 corpses. Note that corpses, like experience and other post-battle loot, will only be collected if at least one friendly unit survives the battle.
A Recycled Stockpile provides a flat 120 to a city. However, it is distinct from regular stockpiles and is not improved by Unskilled Labor or Organized Labor.
Cultists
Cultists' Weapons of the Enemy trait causes them to immediately raze any acquired city and gain 1 Industry Stockpile per 
Population in the city. For example, conquering a city with 5 will generate 5 Industry Stockpiles. This is further enhanced by Destructive Analysis, an Era II technology that grants 1 Science Stockpile per Population when razing a city.
Kapaku
The 
Kapaku Era III technology Siege Engineering causes Rubble Stockpiles to be generated when dealing 
Fortification Damage to cities. Rubble Stockpiles are functionally identical to Industry Stockpiles.
Miscellaneous
Stockpiles may be bought and sold on the Marketplace after researching Imperial Coinage. They may also be traded in Diplomacy like other resources.
Three unique Naval Facilities, the Food Stockpile Facility, Industry Stockpile Facility, and Science Stockpile Facility, each regularly produce one of their respective stockpiles.
Analysis
A stockpile allows one to transfer large amounts of Industry and Food to a specific city, with a slight to severe cost in efficiency. Good uses include developing newly-settled cities, power-levelling a new hero, or the Wonder Victory.
ELCP
For stockpile strategy in ELCP, see Strategy Guide/Other Resources#Stockpiles.
Vanilla Exploits
Prior to ELCP, stockpiles were widely considered an exploit, to the point where stockpile technologies were usually banned in multiplayer games. This is because in the vanilla version of Endless Legend there are mechanics that greatly multiply stockpile efficiency:
- Pearl Hoarding unlocks stockpiles that can be produced for 100 and 8, which can then be upgraded to yield // 1600 with Unskilled Labor and Organized Labor. This is a huge, essentially free bonus to production. ELCP fixes this by halving the number of stored stockpiles whenever a stockpile technology is unlocked.
- The
Allayi technology Luxury Alchemists also applies to stockpiles, enabling a single stockpile to have multiple turns of effect. This is removed in ELCP.