Erratum to: On the optimal mix of Renewable Energy Sources, electrical energy storage and thermoelectric generation for the de-carbonization of the Italian electrical system

1 Erratum to: Eur. Phys. J. Plus (2020) 135:72 https://doi.org/10.1140/epjp/s13360-019–00036-9

The original version of this article contained an error in the captions of Figures 3, 4, 5, 8 and 10.

The corrected versions of the captions read:

Figure 3: Comparison of the maximum energy storage and the maximum power storage at different thermoelectric generation powers for 40% RES share. Top: hydroelectric storage considering two photovoltaic fractions (f_PV = 25% and 60%) and the values of the storage efficiency given in Table 1. Bottom: power-to-gas storage again considering two photovoltaic fractions and the values of the storage efficiency given in Table 1.

Figure 4: Comparison of the maximum energy storage and the maximum power storage at different thermoelectric generation powers for 70% RES share. Top: hydroelectric storage considering two values of f_PV (25% and 60%) and the values of the storage efficiency given in Table 1. Bottom: power-to-gas storage again considering two photovoltaic fractions and the values of storage efficiency given in Table 1.

Figure 5: Comparison of the maximum energy storage and the maximum power storage at different thermoelectric generation powers. Top: hydroelectric storage considering two different photovoltaic fractions (25% and 60%) and the values for the storage efficiency given in Table 1. Bottom: power-to-gas storage again considering two photovoltaic fractions and the values for the storage efficiency given in Table 1.

Figure 8: Power produced by thermoelectric system versus RES share for two cases: no storage (blue) and unlimited storage (red) using 100% round-trip efficiency. The case of power-to-gas storage (max storage considered 10TWh) and hydroelectric storage (max storage 1.3 TWh) is also shown. Left: photovoltaic fraction = 25%; right: photovoltaic fraction = 60%.

Figure 10: Grid power (Pgrid) as a function of intermittent RES production for four cases: photovoltaic fraction = 25% (blue line) and 60% (green line), grid power minus the power due to the storage system for a photovoltaic fraction of 25% and Pgrid minus the storage power for a photovoltaic fraction of 60% (purple line).

The authors would like to apologize for any inconvenience caused to the readers by these changes.