Attero
Who owns Attero?
Attero is a Dutch Energy company, now owned by 3i Infrastructure and DWS, which acquired it in 2018 from Waterland Private Equity.
Ardian is still listed as an investor in Attero, status not confirmed after the 2018 sale.
Hand-verified · updated 2026-04-21
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Key facts
Ownership history
2 ownership periods
Waterland Private Equity sold Attero to 3i Infrastructure and DWS in 2018 after 4 years.
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NetherlandsQuestions
Who owns Attero?
Attero is now owned by 3i Infrastructure and DWS, which acquired it in 2018 from Waterland Private Equity. Ardian is still listed as an investor in Attero, status not confirmed after the 2018 sale.
When did 3i Infrastructure and DWS acquire Attero?
3i Infrastructure and DWS acquired Attero in 2018, buying from Waterland Private Equity.
Who did Attero sell to?
Waterland Private Equity sold Attero to 3i Infrastructure and DWS in 2018 (Trade Sale).
Who has owned Attero over time?
Attero has been through 2 private-equity ownership periods: Waterland Private Equity · via Waterland Private Equity Fund VI (WPEF VI) · 2014–2018 · sold to 3i Infrastructure and DWS · (Trade Sale); Ardian · via Ardian Infrastructure Fund VI.