🇧🇬 Bulgaria · Government Procurement Portal
Search CAIS with AI.
Find Bulgarian government tenders on CAIS with Hook's plain-English search — track construction, energy, IT, and EU co-financed infrastructure opportunities without navigating a Bulgarian-language portal.
What is CAIS?
CAIS (Central Automated Information System) — accessed through app.eop.bg — is Bulgaria's official electronic public procurement platform following a 2019 migration to the eOP system that brought the country's procurement infrastructure in line with EU e-procurement directives. The platform covers all public contracting authorities including central government, municipalities, and state-owned enterprises. All notices are published in Bulgarian, using the Cyrillic alphabet.
https://app.eop.bgWhy use Hook for CAIS?
- 01 10× Faster Search all CAIS listings in seconds instead of browsing the portal manually.
- 02 Always Current Hook indexes CAIS continuously. New tenders appear within minutes of publication.
- 03 Plain English No procurement jargon or portal-specific search syntax. Just describe what you need.
- 04 Export-Ready Structured data with tender IDs, agencies, values, and deadlines — ready for your CRM or pipeline.
CAIS at a glance.
- Portal Language
- Bulgarian
- Region
- Europe
- Country
- 🇧🇬 Bulgaria
- Official Portal
- https://app.eop.bg
Key procurement sectors
Bulgaria procurement landscape
Bulgaria's procurement market serves the EU's lowest-cost member state economy, where construction and energy dominate tender volumes. EU cohesion funding accounts for a substantial share of total procurement activity, particularly in transport infrastructure (roads, railways, border crossings) and environmental projects covering wastewater treatment and waste management — areas where Bulgaria has historically had significant infrastructure gaps. The 2019 migration to the eOP platform modernized the technical foundation and aligned processes with EU e-procurement directives, improving accessibility and data quality. Energy procurement covers both traditional generation and grid infrastructure as well as renewable energy projects, reflecting Bulgaria's energy transition priorities. IT services procurement supports ongoing digital government transformation. Tourism-related infrastructure procurement is also present, reflecting the Black Sea coast's economic importance. The combination of EU co-financing and domestic budget spending creates a two-channel market with different eligibility requirements.
Bidding on Bulgaria tenders.
Above-threshold contracts follow EU procurement directive procedures. The 2019 eOP platform migration standardized submission processes electronically. Suppliers typically provide qualification documents demonstrating financial standing, technical capacity, and compliance with legal requirements. Bulgarian-language documentation is standard for national procedures.
Why search CAIS with Hook?
CAIS publishes in Bulgarian Cyrillic, presenting a significant language barrier for international suppliers. EU co-financed projects are a major category, but identifying them requires active monitoring of a high-volume platform. Hook continuously scans CAIS and delivers plain-English opportunity summaries filtered to your target sectors and regions.
How Hook searches CAIS.
Ask in Plain English
Describe what you need in everyday language. No procurement jargon, no boolean operators, no CAIS-specific search filters.
Hook Searches CAIS
Hook scans the full CAIS database — open tenders, quotations, and awarded contracts across every listed agency and public body.
Get Structured Data
Results arrive as a clean dataset: tender IDs, issuing agencies, estimated values, and closing dates — ready for your pipeline.
🇧🇬 Explore more
Looking for all Bulgaria government tenders?
See the full Bulgaria country page for pricing, use cases, and coverage beyond CAIS.
🇧🇬 Bulgaria →CAIS — FAQ.
What language does CAIS publish in? +
Notices are published in Bulgarian using the Cyrillic alphabet. Hook provides plain-English summaries so non-Bulgarian speakers can monitor and evaluate opportunities.
What is the eOP platform? +
Bulgaria migrated to the eOP platform in 2019, bringing its procurement system into alignment with EU e-procurement directives. CAIS is the data layer accessible through app.eop.bg.
How important are EU funds in Bulgarian procurement? +
EU cohesion funds account for a substantial share of Bulgarian procurement, particularly in transport infrastructure, wastewater treatment, and environmental projects.
What sectors are most active on CAIS? +
Construction and energy are the largest categories, with EU structural funds, IT services, and tourism infrastructure also representing significant procurement volumes.
Can EU companies from other member states bid on Bulgarian tenders? +
Yes. Above-threshold contracts follow EU procurement directive procedures and are open to suppliers from all member states.
How does Hook help with Bulgarian procurement? +
Hook monitors CAIS continuously and delivers filtered plain-English opportunity summaries, removing the Bulgarian Cyrillic language barrier and eliminating the need for manual portal monitoring.
Get early access to Bulgarian procurement intelligence.
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