ESA tenders: a guide to European Space Agency procurement

The European Space Agency (ESA) is an intergovernmental organisation of 23 Member States that designs and runs Europe's joint space programmes: science missions, Earth observation, satellite navigation, telecommunications, launchers and space safety. ESA builds little itself. It buys the work from companies, research institutes and universities, and those purchases are what this guide calls ESA procurement.

There is more money in the system than ever. At the Ministerial Council in Bremen in November 2025, Member States committed more than EUR 22 billion, the largest contribution in ESA's history. Most of it reaches industry as contracts.

Not every contract is a satellite. ESA also buys software development, data analytics, AI applications, electronics, materials research, testing services and studies. Many tenders are smaller technology development activities or feasibility studies that an SME can bid for alone or together with a research institute.

For a company used to public tenders, ESA is familiar and foreign at once. The invitation to tender, the evaluation criteria and the deadlines follow the same logic as tenders under the EU directives. The rules, the publication channel and the remedies are ESA's own.

Finland has been a full ESA Member State since 1995. According to Business Finland (March 2026), Finland takes part in ESA programmes with EUR 233 million in the funding period that has now begun. The Ministry of Economic Affairs and Employment counts more than 200 companies in the Finnish space value chain, and 125 different organisations have participated in ESA programmes over the past ten years.

What matters to a company is what happens to that money. Under ESA's industrial policy, a Member State's contribution returns to its companies, research institutes and universities as contracts. Finland's contribution therefore creates demand that is meant to be filled by Finnish organisations, provided their bids are good enough. In November 2022 the Finnish government reported that Finland was receiving more in contracts than its share of contributions.

According to the ministry, Finland's priorities are responsible and sustainable space activity, the competitiveness of SMEs and the new space industry, solutions supporting security and defence, and Arctic requirements. Programme choices matter directly, because in optional programmes only organisations from the countries funding the programme may bid.

Help is available in three places. Finland's ESA delegation is led from Business Finland, which advises on programme choice and issues the national letter of support in the programmes that require one. Early-stage companies can apply to the ESA BIC Finland incubator hosted by Aalto University and funded by ESA and Business Finland. Space policy is the responsibility of the Ministry of Economic Affairs and Employment.

ESA is neither an EU institution nor a national contracting authority. It is an international organisation whose members include the United Kingdom, Norway and Switzerland, which are outside the EU. The EU procurement directives and national procurement acts therefore do not apply to ESA procurement, and ESA tenders are not published on TED or on national portals such as Finland's Hilma.

Procurement is governed by the ESA Convention and the Contracting Regulations (ESA/REG/001) issued under it. The regulations that entered into force in January 2025 replaced the earlier general and special conditions of tender, so each invitation to tender now comes with a single set of conditions. Contracts are subject to the General Clauses and Conditions for ESA Contracts (GCC). The Member States have agreed them jointly and they are not negotiated bid by bid: by signing the cover letter of the tender, the bidder accepts them.

Remedies are ESA's own as well. An ESA award cannot be challenged in a national court such as the Finnish Market Court. An unsuccessful bidder can request an oral debriefing within ten days of the regret letter and then, within five days, raise a procedural breach in ESA's own review procedure. The substance of the selection cannot be contested, only whether the procedure was followed.

Competition is the rule at ESA. The normal procedure is Open Competition, in which registered organisations from the countries named in the invitation to tender may take part. Restricting competition or negotiating directly with one supplier requires a justification approved by ESA's Industrial Policy Committee (IPC). The procedures are summarised in the table at the end of this section.

Calls for proposals come in three types. In a Standard Call for Proposal a bid can be submitted at any time and is evaluated as it arrives. In a Fixed Call bids are submitted by a closing date and evaluated together. In an Open Call bids are accepted continuously but evaluated in batches at pre-announced dates.

For low to medium value, low-risk procurements ESA uses the lighter EXPRO procedure (Express Procurement). The invitation to tender, the proposal template and the draft contract are standardised, the tender period is shorter and the contract is reached faster. An SME's first ESA bid is often an EXPRO bid.

Names familiar from the EU directives can mislead. ESA's Restricted Competition is not the two-stage restricted procedure in which anyone may submit a request to participate. ESA chooses the invitees itself.

Everything runs through esa-star. The name stands for System for Tendering And Registration, and the system replaced the earlier EMITS database that some older guidance still refers to. A bidder needs four of its modules, listed in the table at the end of this section.

The Publication portal can be browsed without logging in. A guest sees the list of tenders in open competition and calls for proposals, with their basic details. The tender documents, the expression of interest and the bid work area open only to a logged-in user who holds the Bid Manager role for their organisation.

A tender on the portal is in one of two states. Intended means a forthcoming tender (Intended Invitation to Tender, IITT): ESA gives a summary of the work, a price range, the planned issue date and the responsible unit. Issued means an open tender that can be bid for. The intended stage is valuable to a bidder, because ESA can still be asked questions freely and there is time to build a consortium. Once the invitation to tender is issued, contact is allowed only through formal clarification requests in the system.

The same portal has a section called Non-ESA Tender Actions. ESA's prime contractors publish their own subcontract tenders there when ESA requires them to run their procurement in line with ESA's own practices.

ESA publishes tender results in its Procurement Dashboard, which appears regularly in the portal's news section.

A bidder has to meet two levels of conditions: general and tender-specific. The general conditions are the same in all ESA procurement. The organisation must be located in an ESA Member State, it must have the competence and financial resources the work requires, and none of the impediments in Article 12 of the Contracting Regulations, such as bankruptcy or serious misconduct, may apply to it. It must also be registered on esa-star.

Registration has two levels. A Light registration is enough up to and including bid submission. Being awarded a contract requires Full registration. Registration is done through an online questionnaire, ESA validates it, and the information has to be kept up to date. Start the registration now, not when a suitable tender appears. A subcontractor must be registered too, even if it never uses the system itself.

The tender-specific conditions are in the cover letter of the invitation to tender. The most important is nationality: the field Open to Tenderers from lists the countries whose organisations may bid. Mandatory programmes include all Member States, optional programmes only those funding the programme. If your country is not listed, ask your national delegation about the options before spending time on a bid.

ESA supports SMEs and other non-prime companies through the so-called C-clauses. C1 limits the competition to companies other than the large system integrators. C2 requires a large system integrator to include a significant share of non-primes in its bid. C3 reserves the activity for SMEs and research organisations. C4 obliges the prime to include SMEs as subcontractors or to show why that was not possible. SMEs are defined as in Commission Recommendation 2003/361/EC.

Some optional programmes additionally require a written letter of support from the bidder's national delegation. These typically include the telecommunications programme ARTES, the technology programme GSTP and the navigation programme NAVISP. In Finland the letter is requested from Business Finland, and it takes time.

The most distinctive feature of ESA procurement is geographical return, or geo-return. The principle is written into Article VII of the ESA Convention: all Member States must be able to participate in an equitable manner, having regard to their financial contribution. ESA tracks the outcome with a return coefficient for each country, which compares the country's share of the value of contracts with its share of the contributions.

A bidder meets this in three ways. A tender can be limited to certain countries if their return is lagging. In large programmes the prime contractor can be required to place a certain share of the work in certain countries, and will then look for subcontractors there. And the make-up of a consortium matters: a subcontractor from a country with a return deficit can be valuable to a prime precisely because of where it is based.

Geo-return is not marked in the evaluation. It affects who a tender is open to and what is required of the consortium. It does not lower the quality bar: a weak bid is rejected whatever its country of origin. In large mission procurements the final selection takes into account price and the return requirements set in the invitation to tender, in addition to the marks.

The principle is being reformed. In June 2024 the ESA Council took a first step towards more flexible geographical return, and a model in which a Member State's contribution is set only after the outcome of the competition (fair contribution) has been prepared for the European Launcher Challenge. Geo-return nevertheless remains in the Convention and steers most procurement. The conditions of each tender must always be read in the invitation to tender.

An ESA Invitation to Tender (ITT) consists of a cover letter and its appendices. Read the cover letter (also called the Letter of Invitation) first, because it contains the eligibility conditions, the budget, the closing date, the evaluation criteria with their weights and the name of the responsible Contracts Officer. The appendices are the Statement of Work, the draft contract and the conditions of tender. Documents and bids are in English in practice.

The cover letter also sets the Key Acceptance Factors. If any one of them is not met, the bid is not admitted for evaluation. The most common are the closing date, the budget ceiling and acceptance of the contract conditions.

The budget works differently from tenders under the EU directives. ESA usually states a maximum budget that the bid must not exceed. Bidders therefore do not compete downwards on price. They scope their solution to the budget and justify the costs on ESA's own costing forms. The price is given in euros, and the cover letter also caps the permitted profit margin, typically at around eight per cent.

Questions to ESA are submitted in esa-star Tendering. The answers are published anonymously to all bidders, so word a question in a way that does not reveal your solution. The bid is submitted in the same system, and a late bid cannot be uploaded: the portal closes at the deadline.

The durations below are indicative and based on the bidding guide commissioned by the UK Space Agency (May 2025). The binding information is always in the invitation to tender.

Evaluation has two stages. First the Tender Opening Board (TOB) checks that the bid arrived on time and meets the Key Acceptance Factors. Then the Tender Evaluation Board (TEB) marks the bids. The board consists of ESA's technical, financial and legal experts, including people from outside the project. Member State representatives do not sit on it.

Each member first assesses the bids independently, after which the board agrees the marks. Bids are not compared with each other but with the criteria in the invitation to tender, typically three to five of them. The board may take into account only what is written in the bid. A familiar name does not make up for a missing justification.

Every criterion needs at least 40 marks out of 100. If a single one falls short, no weighted overall mark is calculated at all. For contracts above EUR 20 million, an overall weighted mark of at least 60 is also required.

Price is not marked in technology procurements. The board assesses whether the costing is fair and reasonable for the work offered. A more expensive but well-justified bid can therefore beat a cheaper one, as long as both stay within the budget.

The best bidder is invited to a negotiation meeting to close the open points before the contract. Full esa-star registration must be complete by this stage at the latest. Unsuccessful bidders receive a regret letter. Always ask for the oral debriefing; the request must be made within ten days of the letter.

A large share of ESA's money flows through prime contractors. In satellite and mission projects ESA contracts with a prime, which then tenders the subsystems, components and software onwards. For a newcomer, subcontracting is often the most natural first step.

In large projects ESA can oblige the prime to tender its subcontracts in line with ESA's own practices (Best Practices). These tenders are published in the Non-ESA Tender Actions section of esa-star, so they are found in the same place as ESA's own.

A subcontractor is asked for the same information in the bid as the prime: work package descriptions, schedule, key personnel and costing forms. The subcontractor delivers its part to the prime and does not submit a bid on esa-star itself, and it may communicate freely with the prime throughout the tender period. Registration on esa-star is still required.

There are three ways to find partners: the esa-match service, expressing interest in a forthcoming tender, which makes the interest visible to other companies, and industry days, which ESA announces in the portal's news section.

ESA is often confused with the EU Space Programme. Galileo, Copernicus and IRIS² are EU programmes led by the European Commission. The EU Agency for the Space Programme (EUSPA) in Prague is responsible for operating Galileo and EGNOS. The Commission's and EUSPA's own procurement follows the EU financial rules and is published on the EU Funding & Tenders portal and on TED.

The line is not perfectly sharp, because the Commission has entrusted part of the development of these programmes to ESA. In those cases the tender is published on esa-star, but the conditions may contain special requirements stemming from the EU funding. Eligibility may, for example, depend on EU membership instead of ESA membership.

A company selling to the space sector therefore has to follow at least two channels, esa-star and TED. National space-related procurement, such as satellite data and ground station purchases by research institutes and public authorities, is published on national portals as well. In Haavi these channels sit in one search profile.

Following ESA tenders by hand means visiting esa-star regularly and reading statements of work to find out whether any of them concerns what your company does. For a company outside the space sector, say a software house or an electronics manufacturer, suitable opportunities are rare. That is exactly why they are easy to miss.

Haavi fetches esa-star's open competitions and calls for proposals several times a day. You switch the source on in the Databases and regions step of your search profile, with the ESA tenders toggle. Haavi reads your profile description, assesses whether the source is worth switching on and tells you why.

After that, ESA tenders arrive in the same Results view as notices from TED, Hilma and other sources, and Haavi compares each one with your company profile. For each tender you see the closing date, the clarification deadline and ESA's technology and product classification. The tender documents are downloaded from esa-star with your own credentials, and you can bring them into Haavi for analysis.

Haavi does not replace esa-star registration, because the bid is always submitted in ESA's own system. Haavi makes sure you hear about the right tender in time. With a tender period of 42 or 28 days, every day counts.