German TSOs convene stakeholder workshop on market-based procurement of instantaneous reserve (Momentanreserve)

The German TSOs announced a stakeholder workshop on 22 September 2026 (13:00–14:00) on the market-based procurement of instantaneous reserve (Momentanreserve), which according to the notice has been procured on a market basis since 22 January 2026. The TSOs state they will give a short update on key changes and discuss current challenges and questions from a market perspective; registration is via a Microsoft Teams link.

Instantaneous reserve (inertia) is a system-stability service whose procurement is shifting from an implicit/technical arrangement to a market-based scheme in Germany. A workshop that promises an update on 'key changes' plus a market-perspective discussion signals that the operating scheme's product definition, eligibility or procurement mechanics may be refined, which directly affects prospective providers such as grid-forming converters, synchronous condensers, storage and conventional units.

The source is an administrative invitation rather than a design document, so the substantive content of any changes is not disclosed. What can be established from it is: (i) a market-based Momentanreserve procurement scheme is operational in Germany as of 22 January 2026, and (ii) the TSOs are running a structured feedback loop with potential market participants roughly eight months into operation. That combination is typical of an early-operations tuning phase, where liquidity and participation from non-synchronous providers, product granularity and remuneration are the usual open questions. Because the notice gives no product parameters, volumes, prices or procurement calendar, no inference should be drawn about the direction of any revision. The event should be tracked as IMPLEMENTATION with the workshop as the near-term milestone; substantive design signals should be expected only from the workshop materials or a subsequent TSO publication.

Not specified in the source; German TSO procurement of instantaneous reserve

Stakeholder workshop on market-based procurement of instantaneous reserve · 22 Sept 2026

Primary sources