Where to build: choosing a system and structure for manufacturing

Where you build decides your margin more than the blueprint does. We walk a ladder of seven options — from an NPC station in high-sec to renting a dead-end system from a sov alliance — through the two cost levers (system index and structure rigs) and the shared risk of other people’s structures. At the end, how to pick a tier for your capital, time and risk tolerance.

The two cost levers — and the taxes you can’t remove

A build cost is materials plus the install fee, and location moves both parts. The install fee is EIV × system index, and on top of it sit flat taxes: the 4% SCC surcharge, the facility tax and the alpha clone tax. Every flat tax is taken from the raw EIV and is cut by nothing — not the structure, not skills, not standings. The only part of the formula you can cut is the index term, and location cuts it. Hence the first lever.

The system index — that activity percentage in the industry window — rises with how much and how long people build there: it is measured from the volume of jobs in the system relative to the whole universe over a rolling window (roughly a month; CCP doesn’t publish the exact formula and made it more volatile in 2023). An expensive blueprint doesn’t raise the index — only the volume and duration of jobs lift it. Jita’s index runs near ~19%, a quiet neighbouring system is a fraction of a percent — a difference of tens of times. So the base pattern for any producer is simple: haul materials from Jita, build in a quiet system, sell in Jita.

The second lever is the structure’s rigs, and it is stronger than it looks. A material rig cuts material use, but its bonus is multiplied by the system’s security status. A manufacturing ME rig gives its base figure in high-sec (T1 −2%, T2 −2.4%), in low-sec the multiplier is ×1.9, and in null or a wormhole ×2.1 — the same rig in null saves twice the materials. The rig bonus multiplies with the structure’s role bonus and the blueprint’s ME, it does not add. The conclusion that changes the whole picture: null gives more margin through a low index and by physically eating fewer materials.

One important exception is reactions. Reaction rigs scale with security far more weakly: low-sec ×1.0, null and wormhole only ×1.1, and in high-sec reactions don’t run at all. So cooking reactions in the nearest low-sec is barely worse on materials than in deep null — pushing reactions deeper into null pays off for the index, not the rigs. That settles the common “where to react” question in favour of convenient logistics. Now we walk the ladder of locations, from worst to best.

Tier 1 — NPC station in high-sec: safe and poor

The simplest start is to build right on an NPC station in high-sec. This option has exactly one real advantage, and it is a big one: your assets are untouchable. No one destroys the station, revokes access or unanchors the manufacturing module — whatever sits in your build queue stays put. No option involving structures, someone else’s or your own, gives you that permanence.

The price of that permanence is the worst build cost. An NPC station has no rigs and no structure role bonus, so you pay full materials without a single percent off. The index in the popular high-sec systems near Jita is high, because everyone builds there. For expensive, material-heavy builds — capitals, T2 — that is a death sentence: materials and the index eat the margin. The margin problem scales directly with the material share of the sale price.

Where NPC high-sec genuinely works is cheap, high-volume T1: ammo, drones, simple modules. There the materials are pennies against the sale price, and the −2% of rigs changes nothing, while zero counterparty risk and Jita proximity are a plus. For a newcomer it is an honest first step: build near Jita, sell in Jita, lose nothing. As soon as the builds get expensive, the NPC station becomes a drag, and it is time for structures.

Tier 2 — someone else’s structure 1–2 jumps from Jita

The next rung is someone else’s structure (public or via an ACL) one or two jumps from Jita, with reactions bought ready on the market. There is one weighty advantage — speed. Materials are close, a rigged structure discounts materials and the install fee, and the finished goods go straight to Jita to sell. Capital turns over fast and entry is cheap: you pay only materials plus the structure owner’s tax.

The downsides hit the margin from two sides. The index near Jita is high — the neighbouring systems are packed with the same producers. And buying reactions on the market: simple reaction components are cheaper to buy than to cook, while the complex ones are often dearer than they’d cost if you cooked them yourself in the right place. This is where the calculator comes in: under each reaction and component it shows which is cheaper — buy ready or build. On this tier you buy everything, and part of the margin leaks to the reaction suppliers.

Guide: the build-cost calculator and the build-or-buy tree →

Tiers 3–4 — reactions in low-sec and moving into the sticks

The next step raises the margin — cook reactions yourself in the nearest low-sec, in an Athanor or a Tatara. On materials, low-sec reactions barely trail null, so nearby low is the rational choice. The price is logistics. Reaction precursors and components are heavy, and a full resupply needs a freighter: you won’t want to run from Jita to low-sec on a transport 5–8 jumps every day.

The pro pattern is to park a freighter one jump from low-sec and cover the final jump with an anvil transport doing the MWD+cloak trick. The downside is obvious: MWD+cloak is a good tool, but a prepared camp in low will still catch and kill you. A full freighter of precursors is 9–10 round trips, and every trip carries risk. There is a separate guide on protecting your hauling.

Want more margin — go deeper, into a high-sec backwater or a low-index low-sec where almost no one flies to build. The index there falls almost to zero, and the install fee with it. The price is the same as with reactions, only larger: the logistics are longer, and you haul more and farther. It is a straight trade — every extra jump from Jita is minus time and plus margin. Where exactly to settle, you work out from your turnover and your patience.

Guide: how not to lose your cargo on the run into low-sec →

The shared risk of other people’s structures — destruction and access

Every option on someone else’s structure — tiers two through four — carries a shared, underrated risk. The structure can be destroyed, the owner can suddenly cut your access or unanchor the manufacturing module. What sits in the hangar goes to asset safety on the structure’s destruction or unanchor: your goods aren’t lost, you retrieve them later for a small percentage. But whatever was in a job is lost for good.

The mechanic is harsh: destroying the structure, unanchoring it or removing the module cancels all active jobs, and the input materials of a cancelled job are not refunded. The blueprint survives — it goes to asset safety — but the resources burn along with the install fee. If you had 30 lines of capital components worth 40 billion running at once, all those resources burn in one go. Keep one thing separate in mind: if the module merely goes offline from lack of fuel, jobs pause rather than cancel.

The second scenario — the owner has cut your access while the structure still stands. Here there is a rescue many don’t know about: you can push your own items to asset safety yourself (right-click the structure in your assets → send to asset safety) while the structure is alive and fuelled, then retrieve them through the timer for a percentage. One caveat: in a structure abandoned without fuel, and in a wormhole, this manual trigger doesn’t deliver the items but dumps them in a container in space. For high-sec and normal low/null the self-recovery works.

Tier 5 — your own structures in high-sec, reactions in your own low-sec

The radical move for margin is to put up your own structures. In high-sec you anchor a manufacturing one (a Raitaru or an Azbel, say) and cook reactions in your own structure in low-sec. The advantages are serious: no owner tax, you fit whatever rigs suit your specialisation, no one cuts your access or unanchors the module at a bad moment. You choose the index yourself — settle in a backwater and it stays low. The margin is markedly higher than on someone else’s structures.

Two important limits. First: your own high-sec structure sits on the ×1.0 security multiplier — it gives none of null’s material bonus; its win is the absent tax, your own rigs and the backwater’s low index. Second, and load-bearing: the moment you drop a structure into space, your corp becomes war-declarable — you don’t even have to finish anchoring. A wardec costs the attacker a flat 100 million ISK a week regardless of your size, so knocking your structure down for loot and fun is cheap.

Solo you won’t defend a medium structure against a serious swarm. The one consolation: it doesn’t die instantly — after the first timer you have about a day to pull the jobs and push assets to safety, and the goods inside high-sec go to asset safety anyway. On top of that the structure must be fed fuel constantly, and the Quantum Core (required for it to work) drops as loot to the enemy when it dies. And the payback: a Raitaru with rigs and a core is already a couple of billion, and a full vertical needs two structures (one for ships, one for components), because ship rigs and component rigs differ. That is a separate calculation, and without good turnover the structure doesn’t even earn back its fuel.

Tier 6 — a manufacturing corp in sov null

The other path is to join a manufacturing corp sitting in a strong sov alliance (the likes of Init, Fraternity, the Goons). The advantage is that it is all set up: structures stand, an internal market exists, logistics are built — move in and build. Null rigs give the best materials in the game (×2.1), and access opens what high-sec can’t: capitals, supers and titans with good margin and demand. An alliance usually has approved doctrines, so you don’t need to analyse the market deeply or agonise over what to build — you take it and build what the fleet needs.

There is a social layer too. You meet people, build connections, get to fly PvP and open an endgame that is out of reach solo. For a producer, war is work: the more fighting, the more building. Supers and titans are built only in a Sotiyo in a system with sov and the right upgrade, so it is exactly the sov alliance that gives access to them.

The downsides are weighty. If the alliance loses a war and gets evicted — start over. What sits in your hangars is usually saved by asset safety when the structures die: it relocates to the nearest NPC station (for null that is usually low-sec) for a percentage and on a timer. What you lose for good is whatever was in a job (the materials of cancelled jobs burn) and anything left in a structure starved to the abandoned state — there asset safety doesn’t fire and the goods drop as loot. Plus the fee and hauling everything out of a low-sec next to the victors — a chore of its own. Logistics from Jita almost certainly needs your own jump freighter with all its costs — Jump Drive Calibration to five, cyno alts, fuel. You aren’t alone in the corp: coalition-mates build the same things on the same structures, the system index rises, the margin falls, and you either wait or pivot to other hulls. Plus the obligations of a big sov bloc — CTAs and timers won’t pass you by.

Tier 7 — renting a dead-end system

The final rung is to rent a dead-end system from a strong sov alliance, put up your own structures there and build alone. The main win is that the index barely rises, because no one but you builds in the system, while null’s materials (×2.1) still apply. The margin comes out the highest of all options.

The rest of the pluses and minuses are as with the sov corp, with two additions. You pay rent to a landlord, who can raise it, evict you or lose the region himself. And you are isolated: a swarm comes and you are alone, no fleet behind you, and none of a corp’s social layer either. It all rests on the landlord alliance holding the space; lose it, and you lose too.

How to choose: by capital, time and risk

Boil it down to a choice. Start from three questions: how much capital you have, how much time you’ll spend on logistics, and how much risk of losing what you invested you can stand. Cheap high-volume T1 and very little capital — stay on an NPC station in high-sec; you lose on margin but lose nothing physically. Want fast turnover and a simple start — someone else’s structure near Jita, reactions from the market, and bring the calculator in on every reaction’s build-or-buy.

Ready to haul into low and want a better margin — your own or bought reactions in the nearest low-sec plus building in a quiet system; nearby low is barely worse than null on materials. Have the capital for a couple of structures, the fuel and the nerve for wardecs — your own structures in a high-sec backwater plus reactions in your own low give a high margin with no owner tax, but do the payback honestly. Want maximum margin and capitals — the road runs to null: a sov corp if you value ready infrastructure and community, or renting a dead-end system if you’re ready for your own structure and logistics to keep the index near zero.

The rule over all tiers: margin grows along two axes at once — the index falls and the rig material bonus rises — while the price is always the same, logistics and risk. Before moving somewhere far, cost out the candidates in the calculator: the system cost index shows right in the dropdown, and it folds the install fee and build cost to your structure and skills. A cheap nearby option with fast turnover often beats a far one with a big margin, if you count ISK per hour rather than margin percent.