Figure 4.
Dependence of proxy storage PPA threshold price on time-dependent electricity price and renewable energy generation
Proxy storage PPA threshold price (colorbar) is reported as a function of the average capacity factor of RE generation and of the average electricity market price for solar-charged (left-hand side) and wind-charged storage (right-hand side). Based on historical electricity prices and RE generation for 2015–2019. Markers are reported to indicate the conditions of all specific projects across the markets of interest; their colors do not follow the colorbar and simply indicate different countries.
