I am going to use the assumption that, following the completion of the most recently commissioned Ngatamariki geothermal station in FY2013, Mercury considered itself 'capital optimised'. Using the balance sheet from that year, we can therefore calculate an optimised gearing ratio for the company:
Optimised Gearing ratio: (Total Liabilities)/Total Assets): $2,620m / $5,802m = 45%
The 'thin air capital' accumulated by Mercury since FY2013 is as follows:
Year |
New Thin Air Capital |
Post Tax Effect Multiplier |
Effective New Thin Air Capital |
FY2014 |
$40m |
0.72 |
$28.8m |
FY2015 |
$497m |
0.72 |
$357.8m |
FY2016 |
$106m |
0.72 |
$76.3m |
Total |
|
|
$463m |
The total of this 'thin air capital' that has been accumulated could theoretically support extra debt 'd' according to the company's optimised gearing ratio.
'd' / $463m = 45% => d=$209m
We thus have a total of amount of: $463m + $209m = $672m available to build a new geothermal power plant. Compare this to the $475m cost of building the Ngatamariki 85MW thermal plant in FY2013. I think there should be enough capital available to build a new 100MW plant in FY2017, provided Mercury has not returned any of this 'thin air capital' to shareholders in the meantime.
I should point out that Mercury currently has no plans to build such a plant. I am merely pointing out that they could. Furthermore because they have the relevant consents,
eventually I believe they will. So how do we reflect the potential to build this new power station in today's valuation? This will be determined by the 'effective power generating capacity' ( maximum capacity x expected time ultilisation ) of all of the existing generation capacity.
1044MW Hydro (existing) x 0.514 = 537MW (effective)
463MW Geothermal (existing) x 0.940 = 435MW (effective)
100MW Geothermal (theoretical new) x 0.940 = 94MW (potentially effective)
Hence the potential effective new theoretical capacity increase is:
94 / (537+435) = 10%
Since the overall market would have expanded by the time this new station was commissioned, I would argue that this thin air capital generated since EOFY2013 represents an increase in value of 10% based on the underlying worth of the company today. So my final EOFY2016 valuations are:
$2.66 x 1.1 = $2.93 (based on averaged, normalised eps)
$2.45 x 1.1 = $2.70 (based on averaged, normalised ordinary dps)
Note that I have not incremented my third valuation of $2.75 which included special dividends. In my assessment the 'special dividends' are effectively a return of capital, or more specifically a 'return of thin air capital'. Thus putting an incremental multiple on that figure would be equivalent to 'double counting'.
Summary:
I value MCY as worth between $2.70 and $2.93 (ex-dividend). At $2.93 on the market today, I consider MCY to be at the top end of fair valuation. It is nowhere near overvalued enough for me to consider selling though. By contrast if I was buying, I always like to buy in slightly below fair value. My target buy in price, based on a dividend yield of 6.5% would be:
$2.49 to $2.70.
Right now, I'm neither selling nor buying.
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