Electricity retailer and generator Trustpower has won an extra $450,000 in costs from Inland Revenue.
The stoush over the court costs follows Trustpower coming out on top in a fight with IRD last year over whether $17.7 million spent in applying and getting resource consents for four projects was tax deductible.
The projects in question was a hydro scheme at Arnold River on the South Island's west coast, a Southland wind farm, a hydro project on the Wairau River and a wind farm west of Dunedin.
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Inland Revenue argued these resource consents were intangible capital assets and what was spent in obtaining them was capital expenditure and therefore not tax deductible.