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Marginal price for Guarantees of Origin in the Portuguese auctions trends lower

Friday, 29 October 2021

On 28 October, on the OMIPlus platform, the 3rd Auction for Guarantees of Origin was held related to the production of electricity from renewable sources in Portugal coming from power plants that benefit from a direct price support regime.

The auction model was the ascending clock, with 4.3 TWh of GOs of Guarantees of Origin being auctioned, divided into 8 lots, according to the criteria of Technology - Solar, Wind, Hydro and Thermal - and Production Period - produced in November and December 2020 (3.43 TWh) with the rest (0.86 TWh) from June 2021. A majority of GOs (2.8 TWh) were from Wind, followed by 1.1 TWh of GOs from Hydro. 

All the offered volumes were sold with demand exceeding the auctioned volumes.  However the prices have trended lower compared to the previous auction with the marginal price for 2021 GoOs halving from 1 Euro/MWh to about 0.5 Euro/MWh. Further, the marginal prices were lower by about 10 to 15 Eurocents compared to the OTC market. 

Source: OMIP