Short and Medium-Term Adequacy at European level
European countries are currently and increasingly faced with the challenge of responding to load – i.e. demand – with sufficient electricity generation. The underlying reasons for this are the strong and intermittent presence (or absence) of renewable energy and the increasingly uncertain profitability of conventional generating facilities.
If energy is not present – at any given time – in a country, potential help from other countries depends on the overall availability of electrical energy and the grid capacity to transmit it to the country in need of energy.
The full definition of this service is still under development. The service described in three steps outlined below is the initial start setup for the SMTA implementation between the TSO and RSCs. A more granular timeframe or an extension to other aspects than active power and Cross-Zonal capacity is possible and subject to further investigations. It is as well the target to consolidate all views on adequacy – short, medium and long term – in ENTSO-E into one document in the coming quarters. Therefore, the requirements described under this point are not to be interpreted as mandatory. This Annex may be amended after the full development of this service takes place.
This SMTA service aims at:
- Performing a regional check/update of short/medium term active power adequacy diagnosis, in line with agreed ENTSOE methodologies, for shorter timeframes than seasonal outlooks. This adequacy review shall be made comparing local adequacy inputs and grid capacity to carry cross-border exchanges. This diagnosis can include recommendations such as remedial actions to optimize cross-border exchanges, request to Balancing Service Providers in the Coordinated Balancing Area (CoBA) to change their availability status.
- When needed (at least regional scarcity issue, cross-zonal capacities insufficient), performing a dedicated complementary security analysis and extending coordination to other regions/RSCs. The resulting recommendations may consist in cross-zonal capacities adaptations/combinations in addition to the previously mentioned recommendations.
Implementation stepwise approach:
- 1st step/ Regional adequacy assessment based on individual TSOs assessments respecting precise common rules and methodology. RSCs shall collect these individual TSO adequacy assessments and confront them to the grid capacity to carry cross-border exchanges. The above mentioned common adequacy assessment methodology to be applied by each individual TSO shall be in line with agreed ENTSO-E methodologies, for shorter timeframes than seasonal outlooks and shall precise: load/generation forecast methodology (including methodology for RES forecast and defining rules to take into account Balancing Service Providers availability status), handling of Demand Side Response (DSR) and adequacy alert criteria (upward/downward generation margins). Timeframe: week-Ahead
- 2nd step/ Regional adequacy assessment Ubased on individual TSOs assessments respecting precise common rules and methodology. Timeframe: Week-ahead to day-ahead (in day-ahead, the complete process would be performed only in case of hypotheses change compared to week-ahead). As a last implementation step, depending on the experimentation to be performed by the dedicated SMTA task force.
- 3rd step/ Regional adequacy assessment performed by the RSCs based on raw inputs from TSOs (apply and update at regional level, methodologies and data used for seasonal outlooks). Timeframe: week ahead (till day-ahead only in case of scarcity being detected or in case of relevant hypotheses change compared to week-ahead).