Residential ESS supplier quotation in Bulgaria 2026

How can a company become a supplier to ESS?

This page serves as an overview of the entry points to ESS, providing guidance on how companies can become suppliers to ESS. Companies interested in ESS business opportunities can register a business profile in the ESS Supplier Portal to enable matching of potential suppliers with ongoing procurements.

Where can I find current business opportunities at ESS?

Current and forthcoming business opportunities at ESS are posted in the Procurement Listings. Completed tenders are published quarterly in the Contract Award Notices. All procurement follows the European Spallation Source ERIC Procurement Rules, which align with the EU treaty principles of transparency, non-discrimination and competition.

What is the Supplier Portal?

The Supplier Portal is an electronic tendering system used to publish tenders and relevant documentation and to receive submitted bids for ongoing procurements. Current and forthcoming business opportunities at ESS are posted in the Procurement Listings. Completed tenders are published quarterly in the Contract Award Notices.

What is the deadline for submitting project proposals in Bulgaria?

The deadline for submission of project proposals was December 5, 2024. The Bulgarian Ministry of Energy announced on December 6 that it has received 151 project proposals worth nearly BGN 5 billion, which far exceeded the available funding of BGN 1.154 billion. Of the submitted proposals, 118 projects—totaling BGN 1.6 billion—were shortlisted.