
The Astrahus is a medium-sized citadel, introduced as an Upwell structure in 2016. It is used as an operational base and comes with clone bay, market, and reprocessing service modules. The fuel cost of an Astrahus depends on the modules being used. For example, the reprocessing, clone bay, and citadel modules all have different fuel costs. To calculate the total fuel cost, players can use the in-game fitting tool to simulate the Astrahus/EC fit and see the fuel usage. Additionally, citadels do not consume fuel, but the service modules installed in them do, with an initial onlining cost of three days' worth of fuel.
| Characteristics | Values |
|---|---|
| Fuel Cost Calculation | Based on the modules used, such as reprocessing, clone bay, etc. |
| Fuel Consumption | Varies based on the modules installed and their usage. |
| Fuel Management | The "My Structures" tab shows fuel levels and vulnerability status. |
| Citadel Fueling | Requires control, then accessing the fuel from the cargo hold/item hangar. |
| Structure Type | Astrahus is a medium-sized citadel among options like Fortizar (large) and Keepstar (extra-large). |
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What You'll Learn

Fuel cost depends on the modules used, e.g. reprocessing, clone bay
The fuel cost of an Astrahus depends on the modules used. For example, the reprocessing, clone bay, and manufacturing modules. The Astrahus is a medium-sized citadel that offers strong combat options and defence capabilities. It is often used for manufacturing and reprocessing due to its low tax rates.
The reprocessing and manufacturing modules require an active module to stay online, and if there is not enough fuel, the service will go offline. This will result in paused manufacturing jobs, halted market activity, and locked clones installed at the structure.
The clone bay module allows capsuleers to swap clones without a cooldown period. This module has additional limitations when fitted in wormhole space.
The fuel cost of each module varies, and it is important to consider the fuel type as well. The four racial fuel blocks can be used, and it is recommended to use whichever is cheaper or more readily available based on the ice nearby.
To calculate the total fuel cost of an Astrahus, one must consider the specific modules used and their respective fuel requirements. The in-game fitting tool can be utilised to simulate the Astrahus configuration and provide insights into fuel usage and cost.
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Fuel usage varies with status and size
Fuel usage varies depending on the status and size of an Astrahus. Firstly, it is important to note that Astrahus is a medium-sized citadel, falling between Fortizar (large) and Keepstar (extra-large). The size of an Astrahus citadel determines how many things it can have fitted and its status as a symbol.
The fuel usage of an Astrahus citadel is dependent on the modules that are installed and in use. For example, the reprocessing, clone bay, and citadel modules all impact fuel consumption. Utilizing citadel modules with citadels results in a slight decrease in fuel costs, and the same is true for engineering modules with engineering complexes.
Additionally, the status of an Astrahus as an Upwell structure also influences its fuel usage. Upwell structures receive bonuses that impact their fuel consumption, such as refining yields and reprocessing and refining service module fuel consumption. The Athanor (medium) and Tatara (large) refineries are examples of Upwell structures that can perform reactions or moon mining.
The vulnerability duration of an Astrahus citadel also affects its fuel usage. Citadels have the shortest vulnerability durations, making them easier to defend. This results in reduced fuel consumption compared to other structures with longer vulnerability durations.
In summary, the fuel usage of an Astrahus varies depending on its size, the modules installed, its status as an Upwell structure, and its vulnerability duration. By taking these factors into consideration, one can better understand and calculate the fuel consumption of an Astrahus citadel.
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Fuel is required to keep services online
The fuel cost for an Astrahus depends on the modules being used, such as reprocessing, clone bay, and market services. Each of these services requires an active module to stay online, and the service will go offline if there is not enough fuel. The fuel cost can be calculated by using the in-game fitting tool to simulate the Astrahus/EC fit and see the fuel usage.
There is an initial onlining cost of 3 days' worth of fuel, which is taken from the fuel bay when a service is onlined. Additionally, there is a running cost that consumes fuel from the fuel bay every hour that the service is online.
To ensure that the services in an Astrahus remain online, it is important to monitor the fuel levels and ensure that there is enough fuel to cover both the initial onlining cost and the ongoing hourly fuel consumption.
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Fuel bay refuels every hour that the service is online
The fuel cost of an Astrahus depends on the modules you plan on using, such as reprocessing, clone bay, and citadel modules. Citadels, such as Astrahus, do not consume fuel themselves, but the service modules installed in them do. There is an initial onlining cost of three days' worth of fuel, taken from the fuel bay when a service is onlined. Additionally, there is a running cost that will consume fuel from the fuel bay every hour that the service is online.
To calculate the exact fuel cost of an Astrahus, you can use the in-game fitting tool to simulate the Astrahus/EC fit and see the fuel usage. This will help you determine the fuel cost of each module you plan to use, giving you a better understanding of the overall fuel consumption of your Astrahus.
It is important to note that the fuel consumption of an Astrahus can be optimized by using citadel modules with citadels, as they provide a slight decrease in fuel cost. Similarly, using engineering modules with engineering complexes can also reduce fuel costs.
By understanding the fuel requirements of each module and utilizing the available cost-saving measures, you can effectively manage the fuel consumption and associated costs of your Astrahus in EVE Online.
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Fuel cost is reduced when using citadel modules with citadels
In the game EVE Online, structures such as Citadels do not consume fuel. However, the Service Modules that are installed in them do. When a Service Module is put online, there is an initial cost of three days' worth of fuel, which is taken from the fuel bay. Once online, the Service Module requires fuel to remain active, which will be taken from the Fuel Bay every hour.
Different Services use different amounts of fuel, and the details are shown on each Service Module. Structures like the Citadel offer a bonus to the amount of fuel used by Citadel-specific service modules. For example, the Citadel structures have a bonus to fuel use for any Citadel-specific service modules fitted to that citadel. The Cloning and Market Service Modules, which belong to the "Citadel Service Modules" category, benefit from the Citadel's role bonus of -25% consumption.
The fuel used by Citadels can be any of the four Fuel Blocs. Fuel usage of a service module may be affected by structure bonuses. For instance, the fuel cost is reduced when using citadel modules with citadels.
To fuel a Citadel, a player must assume control by clicking the "Take Control" button located in the upper right-hand corner once docked in said Citadel. The player can then open up the cargo hold and click on the "Item Hangar", which brings up the personal item hangar where the fuel is located. The player can then drag and drop the fuel from the item hangar to the structures Fuel bay.
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Frequently asked questions
The amount of fuel an Astrahus uses per day depends on the modules being used, such as reprocessing or clone bay. The fuel cost of each module varies, and using citadel modules with citadels results in a slight decrease in fuel cost.
Astrahus is a medium-sized citadel introduced by Upwell structures in the Citadel expansion on April 27, 2016. It is meant to be used as an operations base and receives bonuses to combat rig effectiveness and market service and cloning bay fuel usage.
To calculate the fuel cost of an Astrahus, you can use the in-game fitting tool to simulate the Astrahus fit and see the fuel usage. Additionally, the "My Structures" tab in the game will show how much fuel the structures have remaining.











































