Power grid operator IPTO has begun upgrading low and medium-voltage substations around the country to facilitate new RES unit connections to the grid.
The overall effort, expected to create additional grid capacity for RES units totaling 1,750 MW, is still at its early stages. So far, two of 33 substation upgrades have been completed, according to energypress sources.
The upgrade is budgeted at 30 million euros, of which 12 million euros is planned to be provided through the recovery fund.
The 1,750 MW in RES unit connections to be enabled by the operator’s substation upgrades represents nearly 40 percent of a 4,640-MW RES capacity estimated to be needed for the National Energy and Climate Plan to reach its energy-mix goals.
The upgrade work promises to increase substation capacity by 250 MVA in the Peloponnese and Epirus regions, by 100 MVA in the wider Athens area, by 200 MVA in central Greece, and by 250 MVA in north and northeastern Greece’s Macedonia and Thrace regions.
All contracts for the substation upgrades are expected to have been awarded by the fourth quarter in 2023, while all work is scheduled to be completed by the fourth quarter in 2025.
Distribution network operator DEDDIE/HEDNO will use Recovery and Resilience Facility (RRF) funds to cover a considerable proportion of an investment for capacity boosts at certain existing low and medium-voltage substations around the country to facilitate the entry of new RES units.
The capacity boost at these substations, it is estimated, will enable grid entry for new RES units with a total capacity of approximately 1,755 MW.
This prospective RES addition represents nearly 40 percent of the 4,640 MW in new RES unit entries planned for the achievement of National Energy and Climate Plan (NECP) RES penetration goals.
This DEDDIE/HEDNO investment will cost close to 30 million euros, of which 12 million euros will stem from the RRF.
Substations in the Peloponnese and Epirus, northwestern Greece, will be boosted by 250 MVA. Substations in the wider Athens area will be boosted by 100 MVA, such facilities in central Greece will be boosted by 200 MVA, and Macedonia and Thrace units in the north will be boosted by 250 MVA.
All project contracts are expected to have been finalized by the fourth quarter of 2023, while the projects are scheduled to be completed by the fourth quarter of 2025.