Infratil says it expects operating earnings could fall in the year ending March 2020 not including incentive fees.
The infrastructure investor is forecasting earnings before interest, tax, depreciation, amortisation and financial instruments will be between $510-540 million for the year beginning this month.
On Monday, Infratil lowered its guidance for the year just gone to $535-545 million from the $580-620 million expected previously.
The 2020 forecast assumes its 51 per cent-owned Trustpower reports ebitdaf of $205-225 million, that its 65.3 per cent-owned Tilt Renewables will report ebitdaf of A$122-129 million and that Infratil's share of 48 per cent-owned Canberra Data Centres' ebitdaf will be A$52 million.
It also assumes its Longroad investment will deliver three development project gains together with the already realised Rio Bravo gain.