NEMO (Nominated Electricity Market Operator)
A NEMO (Nominated Electricity Market Operator) is, per Regulation (EU) 2019/943 Article 2(8) and CACM Regulation (EU) 2015/1222, an entity designated by the competent authority to perform the tasks of the single day-ahead and single intraday market mechanisms. In Estonia, Nord Pool is the operational NEMO; EPEX SPOT also holds NEMO designation but does not run active trading on EE.
A NEMO (Nominated Electricity Market Operator) is, per Regulation (EU) 2019/943 Article 2(8) and CACM Regulation (EU) 2015/1222, an entity designated by the competent authority to perform the tasks of the single day-ahead and single intraday market mechanisms. In Estonia, Nord Pool is the operational NEMO; EPEX SPOT also holds NEMO designation but does not run active trading on EE.
What a NEMO actually does
Three core functions: (1) collect bids and offers from market participants in the bidding zone, (2) operate the matching algorithms — Euphemia for SDAC, the SIDC continuous matching engine for intraday — and (3) publish the clearing prices and matched volumes that downstream BRPs and BSPs use for scheduling and settlement. NEMOs are licensed and supervised by the national regulator (Konkurentsiamet in Estonia).
Multi-NEMO arrangements
In bidding zones with more than one designated NEMO — including Estonia in principle — market participants can choose which NEMO to bid through; the matching algorithm clears them together so the price is the same regardless. In practice Nord Pool dominates the Estonian and broader Nordic-Baltic flow, and EPEX SPOT presence in EE is nominal.