Industry standard reporting is replacement cost. As someone who clearly invests for safe yield I strongly recommend you put in some effort on understanding this one for your own benefit. Fuel is a consumer staple just like power and food, (regardless of whether or not it fits the classic definition of same for inclusion is consumer staple indices) and 12% gross yield is exceptional.
The presentation contains some commentary on the future effect of demand for petrol, (note of the total volume supplied petrol is just 29%)
Ante-up with some intellectual application mate, you might really like what you find
http://nzx-prod-s7fsd7f98s.s3-websit...935/299133.pdf
It is well worth noting that average broker forecast dividends for FY20 were just 47.7 cps so the company mid point dividend forecast of 51 cps fully imputed is a material beat of ~ a 7% increase on market expectation.
https://www.marketscreener.com/Z-ENE...98/financials/
This could lead to a not dissimilar sized SP increase.