tutorial-3: clarifications and nomenclature

tutorial-3/worksheet/sheet03.tex

@@ -156,23 +156,23 @@ For now, assume no power exchange between the regions and that the stores are lo
  \item How much wind capacity $G^{N}_{w}$ must be installed in the North and solar capacity $G_s^S$ in the South so that on average generation matches demand?
 
        % (b)
- \item For a system to work, generation must match demand not on average but at each location and each point in time. Storages are one way of ensuring this constraint with variable renewable generation. What is the amount of store and dispatch power capacity $G_{st,store}=\max(-\Delta(t))$ and $G_{st,dispatch} = \max \Delta(t)$ the storage units must have in the North and in the South to account for the mismatch $\Delta(t)=L(t)-G_{w/s}\cdot g_{w/s}(t)$?
+ \item For a system to work, generation must match demand not on average but at each location and each point in time. Storages are one way of ensuring this constraint with variable renewable generation. What is the amount of store and dispatch power capacity $G_{st,store}=\max(-\Delta(t))$ and $G_{st,dispatch} = \max \Delta(t)$ the storage units must have in the North and in the South to account for the mismatch $\Delta(t)=L(t)-G\cdot g(t)$?
 \newpage
        % (c)
- \item What is the amount of energy capacity one needs in the North and in the South?
+ \item What is the amount of energy capacity $E_{st}$ one needs for either storage in the North and in the South? The energy capacity is given by
 
        \begin{equation*}
         E_{st} = \max_t e_{st}(t) = \max_t \int_{0}^{t} -\Delta(t') \;\mathrm{d}t'
        \end{equation*}
 
        % (d)
- \item Should they choose hydrogen or battery storage? And how much would it cost them with the prices in Table 1? Is the South or the North paying more for their energy?
+ \item Should they choose hydrogen or battery storage? And how much would it cost them with the prices in Table 1? Is the South or the North paying more for their energy? Disregard losses!
 
 % (e)
  \item What do you imagine would change if you considered the storage losses given in Table 1 in your results (a)-(d)?
 
 \end{enumerate}
-Now we lift the restriction against transmission and allow them to bridge their 500 km separation with a transmission line.
+Now we lift the restriction against transmission and allow the two regions to bridge their 500 km separation with a transmission line.
 
 \begin{enumerate}[(f)]
  % (f)