BAM Nuttall

BAM Infra Nederland (Civil Division) was contracted by TenneT to construct the onshore transformer station at Beverwijk that connects the Hollandse Kust (noord) and Hollandse Kust (west Alpha) offshore wind farms to the Dutch 380 kV high-voltage grid. The station serves as the landside termination of the two 220 kV AC export cable circuits coming from each of TenneT's standardised 700 MW offshore platforms; it transforms incoming power from 220 kV to 380 kV before feeding into the national transmission system along the A9 motorway corridor. Construction commenced on 1 March 2021, with expected delivery of the transformer station in November 2023. Within this scope, BAM Infra handled civil works including foundations, building structures, internal cable trenches, perimeter security infrastructure, and other site civils required to host the high-voltage electrical equipment supplied by TenneT and its equipment-manufacturer counterparties. The station is shared infrastructure between the two paired grid connections, with the Hollandse Kust (noord) circuits commissioned first (grid-ready certificate received 31 March 2023) and the Hollandse Kust (west Alpha) circuits brought online in 2024.