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Sparky Goes To Work


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21 minutes ago, Kevin McCready said:

I don't understand the reference to 64 caterpillar. But it pays for itself over its lifetime they say. 

The 2x C32TA Cat diesel generators on board generating 1175 Kva.

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3 hours ago, Kevin McCready said:

I don't understand the reference to 64 caterpillar. But it pays for itself over its lifetime they say. 

I think all pre "sparky" tugs would pay for themselves over their lifetime, some probably several times.

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Sparky, at $21M, is roughly twice the cost of an equivalent new diesel tug.

Using todays prices, it will cost one third as much to run as that equivalent tug would.

So financially Sparky wins and will only get cheaper as the price of oil increases. 

In 2019, the equivalent strength Hauraki, used 191000 liters of diesel equating to 515 tCO2e

Sparky will use approximately 502MWh to operate in the same way, this equates to 50 tCO2e which would mean an annual saving of 465 tCO2e.

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The actual generation mix depends quite strongly on how much rain has fallen and thus how much water is behind the dams. Right now electricity is extremely cheap, because it's been wet and there's heaps behind the hydro dams. Last year it was dry and prices were very high as they conserved the water.

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4 hours ago, khayyam said:

The actual generation mix depends quite strongly on how much rain has fallen and thus how much water is behind the dams. Right now electricity is extremely cheap, because it's been wet and there's heaps behind the hydro dams. Last year it was dry and prices were very high as they conserved the water.

In relatively recent times, since the sale of state energy assets it has been not uncommon for water to be dumped from storage lakes to keep energy prices high to the benefit of shareholders, not consumers. Also the pricing to high users (Comalco for example) is probably as close to the cost of production as they can get, as moving that power onto the general market and the infra structure costs required to achieve that are considered to high to do.

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