Your question is Theoretical Gas Forward Pricing. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Given S0 = 35 €/MWh, r = 4% with continuous compounding, convenience yield y = 1.5% continuously, and storage cost U = 1.20 €/MWh paid today, how would you calculate the theoretical 1-year forward price for gas?