SLIDE 4 4
Cost Structure of a Smelter
TFC = 730,000 TVC = 922Q TC = 922Q + 730,000 tons per week dollars
Average capacity 133,000 ton/year 2,500 ton/week At capacity weekly costs TVC = 2,500 x 922 = $2.35 mil TFC = 2,500 x 284 = $730K AFC = $730,000/Q AC = 922 + AFC
2,500 2,500
tons per week dollars/ton
922
MC
1,206
AC
Short-run supply decision: if P < AVC (MC) do not produce if P ≥ AVC (MC) produce at capacity At price 1,000 the smelter produces at full capacity but makes losses
1,000
At price 1,400 the smelter produces at full capacity and makes positive profits
1,400
At price 800 the smelter shuts down for the week
800
Industry Supply Curve
Suppose there are only 3 smelters: Sorocaba A, Essen, Seydisehir
1,740 1,125 580 AVC 60 135 122 Capacity Seydisehir Essen Sorocaba A Smelter
Below price 580 nobody produces At prices between 580 and 1,125 only Sorocaba A produces At prices between 1,125 and 1,740 Essen starts producing as well Prices at and above 1,740 all three smelters produce
122 580 1,125 257 1,740 317
This suggests a way to construct the market supply: 1. Sort the smelters according to AVC 2. Calculate cumulative capacity 3. Plot AVC against cumulative capacity
thousand tons per year price ($/ton)