RVT Ehitus OÜ and OÜ Mapri Ehitus hold both of Tallinna Vesi's main reconstruction contracts at the Paljassaare Wastewater Treatment Plant: the biogas digesters, contracted in February 2023 for €3,843,794.38 plus VAT, and twelve secondary clarifiers, announced in April 2024 at nearly €9 million over three years.
Paljassaare
The clarifiers are due for completion in 2027. The digester contract required completion within 34 months of signing; the second digester was reconstructed in 2024 and final equipment and process adjustments were completed in 2025. The biogas they produce feeds a combined heat and power plant built by Filter Solutions OÜ under a contract signed on 30 December 2022 and reported at about €2.4 million.
Ülemiste
Nordecon is building Tallinna Vesi's new building at the Ülemiste Water Treatment Plant site under a contract worth €11.8 million excluding VAT, signed in February 2026, of which €9.8 million is for the building. Completion is due in 2027.
The money behind it
The company invested €55.74 million in fixed assets in 2025 and plans €60 million in 2026. Its syndicated bank facility with SEB, Swedbank and OP Corporate Bank was raised to €165 million in May 2026, and its loan balance reached €182 million at 30 September 2026.
What is not yet awarded
The largest contract still open is the 48-month reconstruction of ozonation at Ülemiste, for which requests to participate closed on 15 May 2026. No award had been published by 10 November 2026.
How Tallinna Vesi buys, which projects are open, emerging or strategic, and what suppliers should monitor through 2027 are set out in the brief. The full report, Tallinna Vesi: Utility Account Brief, is available for USD 499. For a free overview, read the Tallinna Vesi Utility Snapshot.