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I am building an industrial city that has a coal power plant, an advanced coal mine, an ore mine, a smelting plant and a trade port to store any excess materials in. My power levels have just gone critical on account of my coal power plant running out of coal;

enter image description here

(Yes I know the power has gone off now)

How can this happen? Why is my coal power plant not receiving coal from my coal mine even though it is currently full?

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Could it be that the mine is sending the coal to the trade port instead? –  Aaron Kurtzhals Mar 16 '13 at 14:57
    
Yeah i'm thinking that aswell, try deactivating the Accept Local Coal deliveries of the trade port. –  Lyrion Mar 16 '13 at 15:02
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1 Answer

up vote 5 down vote accepted

The problem appears to have been caused by the orders and positioned I had placed the buildings in, in comparison to the coal mine. This appears to be down to the route that the agents carrying the materials in choose to travel when leaving the Coal Mine.

In the original route, the coal power plant was at the end of the blue route on a backstreet, while it is now located on the yellow route, before the trading port;

enter image description here

When the agents carrying coal leave the coal mine, they always seem to take the easiest route, which in this instance results in them not crossing over the road, thus they always turn right towards the smelting plant.

Each stop along the way has a specific level amount of coal they can store;

  • The Smelting Plant has storage for 10 tons of coal
  • The Trade Port has storage for 100 tons of coal
  • The Coal Mine has storage for 20 tons of coal

Before the agents will start delivering elsewhere, each of these storages need to fill up to maximum, which means the Coal Power Plant wasn't getting coal in the original instance because the output of the Coal Mine wasn't sufficient enough to fill up the storage capacities of all of the buildings before it.

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thank you for taking the time to explain this. I guess placing essential services near the mine and last port of call ala, trade port; to be further away. I hope they fix it to make local demand fill before exporting. –  Valamas Mar 16 '13 at 22:15
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