Groningen Seaports NV: tenders, sectors & how to win their contracts

Groningen Seaports NV has published 19 tenders in Netherlands.

1 is open for bids as of 5 August 2026.

Its buying spans 7 CPV divisions, most often construction work.

Across 13 awarded contracts the median value is €510.4k.

Its published awards total €19.6m.

How to win their contracts

Measured from Groningen Seaports NV's own published record — no estimates, no generic advice.

Plan for about 47 days to prepare a bid — that is the median gap between publication and deadline across 11 of their tenders.
They publish about 0.2 tenders a month, measured over 65 months of history.
Half of their 13 awarded contracts are worth €510.4k or less — size your bid to that range.
Most of their buying falls in construction work, transport equipment and auxiliary products to transportation, sewage, refuse, cleaning and environmental services.
Their most frequent suppliers are Attero BV (2), Heuvelman G.S.O. B.V. (2) — expect to bid against incumbents who already know this buyer.

Tender	Winner	Tender closed	Contract Value
Afvoer afvalstoffen fase 2 terrein Schipper te Delfzijl	Attero BV	31 March 2023	€2m
Terreinonderhoud havengebieden Delfzijl en Eemshaven 2023 t/...	Lokken Groenvoorziening B.V.	7 November 2022	€1.2m
Ophogen bedrijventerrein Oosterhorn-zuid fase 1	Fa. Gebr. Van der Lee	26 July 2022	€11.8m
Inhuur accountantsdiensten 2022-2025	[ Hofsteenge Zeeman Groep ] ---	19 January 2022	€510.4k
Inkoop en levering van duurzame elektriciteit	De Vrije Energie Producent B.V.	25 May 2021	€12.9k
Afvoer afvalstoffen fase 2 terrein Schipper te Delfzijl	Attero BV	-	€2m

Supplier	Contracts	Total Value
Attero BV	2	€3.9m
Heuvelman G.S.O. B.V.	2	€1.1m