
In the game Factorio, pollution is represented as a red cloud, produced by buildings involved in processing items, and it spreads outwards at a steady rate. The final pollution value is calculated by multiplying the pollution multiplier, energy usage multiplier, and base pollution, meaning heavily boosted buildings are likely to account for most of the pollution. To create the most pollution, players suggest using productivity modules in mining drills and boilers for energy, as well as burning trees and using concrete, which does not absorb pollution.
| Characteristics | Values |
|---|---|
| Objects that create the most pollution | Boilers, steam engines, smelters with speed modules, ore mines, pumpjacks, assemblers, productivity modules, burning trees, concrete |
| How to increase pollution | Use speed modules, productivity modules, destroy trees and biters, use concrete, use only boilers to make energy, use coal power/oil power, use flame turrets and walls |
| Pollution representation | Abstract "cloud" |
| Pollution calculation | Final pollution value = (pollution multiplier * energy usage multiplier * base pollution) |
| Impact of pollution | Attracts biters, increases evolutionary factor, spawns enemies, damages trees and water, kills fish |
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What You'll Learn

Boilers, steam engines, and burning coal are a potent combination
In the game Factorio, boilers, steam engines, and burning coal are integral to power production. Boilers require fuel to produce steam, and coal is a frequent fuel source, especially in the early stages of the game. The boiler's fuel inventory is visible, and inserters can be used to manually or automatically insert coal into the boiler. Burning coal in boilers creates pollution, and a single boiler produces 3.6 MW of power per unit of pollution generated.
To maximize power production, players can experiment with different fuel sources as they become available throughout the game. Alternative solid fuel sources may become available as the game progresses, and players should test various options to optimize their power output. The use of boilers and coal can be a potent combination for power generation, but it comes at the cost of increased pollution levels.
Steam engines, which are connected to boilers and fueled by coal, play a crucial role in converting steam into electricity. Each steam engine requires a steady supply of both water and fuel to function effectively. An offshore pump is used to draw water from a nearby source, and pipes are used to transport the water to the boiler. The boiler then turns the water into steam, which is supplied to the steam engine.
To ensure the efficient operation of the steam engine, it is important to monitor both the water supply and the fuel levels in the boiler. Automated mechanisms, such as inserters, can be utilized to supply the boiler with coal or other solid fuels. Additionally, creating automated fuel feeding systems for boilers can speed up the process and reduce the need for operator involvement.
While boilers, steam engines, and burning coal can be a potent combination for power generation in Factorio, it is essential to consider the environmental impact and the pollution produced by this setup. Players can explore alternative power generation choices, such as solar panels, to reduce pollution levels and mitigate the negative consequences on the game environment.
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Productivity modules in drills and assemblers increase pollution
In the game Factorio, pollution is a significant concern, represented as an abstract "cloud" that spreads across the map. It is produced by buildings involved in processing and manufacturing goods, and it attracts hostile entities called "biters" that will attack the player's base. The final pollution value is calculated by multiplying the pollution multiplier, energy usage multiplier, and base pollution, meaning heavily boosted buildings will likely account for most of the pollution.
Productivity modules are one of three types of modules in Factorio, and they increase the productivity of items produced in a machine while decreasing its crafting speed. While productivity modules can boost efficiency by allowing more items to be crafted from the same inputs, they also increase pollution. This is because the pollution production rate is directly linked to the machine's energy consumption. As productivity modules increase the energy consumed per item, they indirectly contribute to higher pollution levels.
Drills and assemblers are among the machines that can be equipped with productivity modules. While these modules can enhance the output of these machines, they also increase pollution output. For example, electric mining drills normally create 10 units of pollution per minute, but when equipped with three basic efficiency modules, their pollution output is reduced by 80%, resulting in only 2 units of pollution per minute. This demonstrates the ability of efficiency modules to counteract the increased pollution caused by productivity modules.
Additionally, it is worth noting that speed modules can be used in conjunction with productivity modules to mitigate their negative impact on crafting speed. By increasing the production rate of items, speed modules can lower the energy consumed per item, thereby reducing the overall pollution generated. This synergy between speed and productivity modules can be strategically employed to balance productivity and pollution concerns.
In conclusion, while productivity modules in drills and assemblers can increase pollution levels due to their impact on energy consumption, careful module management and the use of speed modules or efficiency modules can help players optimize their setups to control pollution output while maintaining high productivity.
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Destroy trees and cover the ground with concrete
While there is no single object in Factorio that creates the most pollution, there are ways to increase the amount of pollution in the game. One way is to destroy trees and cover the ground with concrete.
Trees absorb pollution and reduce its impact on the environment. They degenerate slowly when exposed to high levels of pollution, losing leaves and becoming grey. If there is too much pollution, trees will deteriorate and eventually disappear. However, trees are also obstacles to construction and must be cleared to provide building space. By destroying trees, you can increase the amount of pollution in the game.
Concrete, on the other hand, does not absorb pollution. Covering the ground with concrete can prevent the absorption of pollution, leading to higher levels of pollution in the game.
Additionally, the burning of trees and fire on the ground produce 0.3 pollution per minute. This can be used as a strategy to increase pollution levels in the game.
It is important to note that while destroying trees and covering the ground with concrete can increase pollution, it may also have negative consequences on gameplay and the player's factory. Higher pollution values can decrease the time it takes for biters to join an attack force and attract them to the player's factory. This can lead to more frequent attacks and increased difficulty in the game.
Overall, by destroying trees and covering the ground with concrete, you can create a significant amount of pollution in Factorio and impact the gameplay and environment of the game.
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Ore mines, pumpjacks, and smelters with speed modules
In the game Factorio, pollution is represented as a red cloud that spreads outwards from the source at a steady rate. It is produced by buildings involved in processing items, and the final pollution value is calculated by multiplying the pollution multiplier, energy usage multiplier, and base pollution. While I couldn't find specific information about ore mines, it's safe to assume that they contribute to pollution as they fall under the category of buildings involved in item processing.
Pumpjacks, on the other hand, have been specifically mentioned in the forums as a source of significant pollution. Players have observed that removing pumpjacks can reduce pollution by 100% while only slightly impacting oil production. The pollution generated by pumpjacks is a topic of discussion, with some players suggesting that it should be proportional to the richness of the oil patch or the impurities in the oil.
Speed modules, when installed in machines, do not inherently produce additional pollution. However, the increased speed of production will lead to a higher energy usage multiplier, which will indirectly increase the final pollution value.
To conclude, ore mines, pumpjacks, and smelters with speed modules can all contribute to pollution in Factorio. While specific pollution values for ore mines and smelters might not be readily available, the pollution generated by pumpjacks and speed modules in production facilities has been a topic of discussion among players.
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Use flame turrets and walls to increase pollution from biter attacks
While there doesn't seem to be a definitive answer to which object in Factorio creates the most pollution, pollution is a key factor in triggering biter attacks. Biters are attracted to pollution and will seek to destroy its source. To increase pollution from biter attacks, consider the following strategies:
Use of Flame Turrets and Walls
Flame turrets deal high area-of-effect damage and can be a powerful tool against biters. By placing flame turrets in your base, you can increase the pollution cloud around your factory, making it more attractive to biters. This will result in more frequent biter attacks, which can be advantageous if you are seeking to increase pollution.
Additionally, building walls can help to confuse biters and make it harder for them to reach your base. Constructing dotted walls in front of your main walls can force biters to take longer routes, giving your turrets more time to engage them. This strategy can increase the time biters are exposed to the pollution cloud, contributing to the overall pollution.
Other Strategies to Increase Biter Attacks
- Destroying Nests: By destroying small biter nests near your factory, you can prevent early attacks. This will prompt biters to send larger forces, increasing the overall pollution generated by their presence.
- Absorbing Pollution: Spawners absorb pollution to send biters to attack groups. By allowing spawners to absorb more pollution, you can increase the size of the attacking force, thereby increasing pollution.
- Pollution Modules: Using mods that increase pollution, such as the Pollution Modules mod, can greatly enhance the pollution produced by assemblers.
- Burning Fuel: Burning oil or coal in boilers or furnaces generates significant pollution. The more fuel burned, the higher the pollution levels will be.
Remember that while these strategies can increase pollution from biter attacks, it is important to maintain a balance. Excessive pollution can lead to larger and more frequent biter attacks, which may become difficult to manage. Ensure that you have adequate defences and resources to handle the increased aggression from biters.
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Frequently asked questions
There are multiple ways to create pollution in Factorio, and it is difficult to say which object creates the most pollution. However, some of the most polluting objects include smelters with speed modules, ore mines, pumpjacks, assemblers, boilers, and steam engines.
To create the most pollution, you should use a combination of productivity and speed modules in your factory. Additionally, you should use boilers and steam engines to generate power, and avoid using any power generation methods that don't produce pollution. Destroy any trees and biters in the pollution cloud, and cover the ground with concrete as dirt absorbs pollution.
The final pollution value is calculated by multiplying the pollution multiplier, energy usage multiplier, and base pollution. This means that heavily boosted buildings will likely account for most of the pollution.










































