$15\mathrm{.}1kW$ of renewable energy plant produces $1800kWh$ of energy per year. Calculate the installed capacity required if the RE plant needs to provide $2000$ TWh of energy per year.

$16.$If $RE$ is available only for $6$ hours a day, then calculate the storage of RE daily required to meet $2000TWh$ of energy. Assume you generate for $6$ hours and store it so that $24$ hours energy needs are met. Assume also, a uniform load without any peak load requirements.

$17.$If $RE$ is stored in electrochemical battery form or hydrogen form and if battery has a storage capacity of $220W\frac{h}{k}g$ and Hydrogen $33200W\frac{h}{k}g,$ calculate the quantity of battery and hydrogen needed daily.

$18.$Hydrogen has a high energy capacity but poor volumetric capacity. If we pressurize hydrogen to $\frac{700}{b}ar,1kg$ of the total weight $($hydrogen and container$)$ carries just $1800W\frac{h}{k}g.$ Now compare the weight between hydrogen and battery to store the energy. Can you calculate the volume of storage for hydrogen?

$19.$Methanol is produced by two step processes. Initially steam reforming of N$.$G is done, followed by methanol conversion reaction after adjusting for $CO$:$H_2$ ratio as given in the following reaction pathway.

$C{H}_4+H_{2}OCO+3H_2$

$CO+2H_{2}C{H}_3$OHdotsdots

$($Steam $-$ methane reformation$)$

$(2)($Methane reaction$)$

$C{H}_4+H_{2}OC{H}_{3}OH+H_2$

Calculate how much methanol is produced per $kg$ of methane. Now, for this reaction $0\mathrm{.}2kg$ of $C{H}_4$ is utilized as energy for steam methane reformation, calculate the $C{O}_2$ emission per $kg$ of methanol produced.