Viva Energy Group (ASX:VEA) revised its EBITDA forecasts for the 2018 financial year from its refining business, down from $216.7 million to approximately $150 million.
It attributes the $66.7 million write down to lower than expected regional refining margins in the second half of the 2018 financial year and lost production as a result of the disruption in electricity supply from the external power grid in August.
This was exacerbated by higher crude prices and growing gasoline stocks over the past month and a half.
In other segments, its total fuel volumes for FY2018 are expected to be between 1 and 1.5 per cent below the prospectus forecast. Notwithstanding the weaker volume performance, Viva Energy expects to exceed the FY2018 underlying forecasts for non-refining segments by approximately $5 million due to continued cost management.
Shares in Viva Energy Group (ASX:VEA) are down 12.68 per cent to $1.79.