SEMO

  • Energy storage and flexibility

    Caught in the balance: Assessing amber alerts in the SEM

    SEMO announced on 21 January that it was issuing an amber alert. This happens when the system margin is at a level where a trip of the largest in-feed would give rise to a reasonable possibility of either a failure to meet system demand, or cause a significant deviation in system...

  • Energy storage and flexibility

    All Along the Watchtower – pricing disputes in SEM

    As we enter the fourth month of the new SEM market, it is already starting to feel a little like business as usual. There are still indications of high balancing price volatility and the odd surprise in the day-ahead, not to mention continued liquidity issues in the intraday continuous market....

  • Low carbon generation

    Coming the long way: wind forecast and imbalance prices

    Last week wind generation accounted for 56% of the generation mix on an all-island basis. The market also saw significant volatility in the Balancing Market (BM), with the Single Electricity Market Operator (SEMO) receiving pricing disputes related to early trading in the BM. While there has been much discussion about...

  • Low carbon generation

    Red Dead Redemption – T-1 CRM competition

    Despite historical oversupply in the Irish and Northern Irish electricity generation market (14.9GW relative to a peak demand of approximately 7GW), a sharp tightening could happen soon, and ironically because of measures designed to support security margins. The catalyst for this is the upcoming Capacity Remuneration Market (CRM) auction, which...

  • Low carbon generation

    Ch-ch-changes – demand side and the Capacity Remuneration Mechanism

    This week saw the release of the SEM Committee (SEMC) decision on T-1 2019/20 Capacity Auction Parameters and Enduring De-rating Methodology (SEM-18-030). This was then followed up by SEM-O releasing the Initial Auction Information Pack and qualification pack for the December auction. The first Capacity Remuneration Mechanism (CRM) took place...