Please specify which one is more profitable: onshore or offshore

D$-$Solar, a German manufacturer of solar panels, faces a plant location decision in a global network with fluctuating exchange rates and demand uncertainty $($whether to build a plant in Europe or China$).$

$$ Demand in the Europe market is currently $1,000,000$ panels per year.

$$ Each panel sells for $50$ euros.

$$ From one year to the next, demand in the Europe market may increase by $20\%$ with probability $0\mathrm{.}5$ or decrease by $20\%$ with probability $0\mathrm{.}5.$

$$No matter the plant is built in Europe or China, D$-$Solar plans to build a plant with a rated capacity of $1,200,000$ panels. The fixed and