TRACK · IMPLEMENTATION CALENDAR
Implementation Calendar
Every dated milestone ahead across tracked electricity market-design developments — consultations, regulatory decisions, implementation deadlines and go-lives. Each row opens the full change map.
49 milestones · 1 year
| Date | Change | Market | Geography | Who is affected |
|---|---|---|---|---|
| September 2026 | ||||
| 23 Sept 2026 | Milestone
RTE confirms 96 XBID nomination gates on France–Spain border from 22 September 2026 |
Energy · INTRADAY | France, Spain | TSOs, intraday traders +3 |
| 25 Sept 2026 | Implementation deadline
PSE Launches Unilateral Monthly Capacity Auction for October 2026 on Poland-Ukraine Radial Interconnection |
Energy · FORWARD | Poland | PSE S.A., NEK Ukrenergo +1 |
| 25 Sept 2026 | Go-live
Elexon Credit Committee raises BSC Credit Assessment Price (CAP) to £160/MWh, effective 25 September 2026 |
Balancing · N/A | United Kingdom | BSC Parties, Suppliers +1 |
| 27 Sept 2026 | Consultation deadline
NESO's BSC Modification P502 moves through Assessment Procedure to create Supplier/Aggregator compensation mechanism for ABSVD-driven imbalance adjustments |
Balancing · REAL-TIME | United Kingdom | Suppliers, Independent Aggregators +3 |
| 29 Sept 2026 | Implementation deadline
Nordic TSOs to cap static FCR-D Up procurement at 50% of requirement from 29 September 2026 |
Balancing · REAL-TIME | Denmark, Finland, Norway, Sweden | Balance responsible parties, FCR-D providers (static resources) +2 |
| 29 Sept 2026 | Go-live
Nordic TSOs to Limit Static FCR-D Up Procurement to 50% Quota from 29 September 2026 |
Balancing · REAL-TIME | Denmark, Finland, Norway, Sweden | Balance Responsible Parties (BRPs), Static FCR-D resource providers +5 |
| 30 Sept 2026 | Go-live
Nordic TSOs to cap static FCR-D Up procurement at 50% of requirement from 29 September 2026 |
Balancing · REAL-TIME | Denmark, Finland, Norway, Sweden | Balance responsible parties, FCR-D providers (static resources) +2 |
| October 2026 | ||||
| 1 Oct 2026 | Milestone
Elexon confirms P518 Report Phase Consultation on ABSVD data provision for CLASS has closed |
Balancing · REAL-TIME | United Kingdom | Elexon, NESO +1 |
| 1 Oct 2026 | Go-live
PSE Launches Unilateral Monthly Capacity Auction for October 2026 on Poland-Ukraine Radial Interconnection |
Energy · FORWARD | Poland | PSE S.A., NEK Ukrenergo +1 |
| 1 Oct 2026 | Stakeholder feedback
NESO's IEP4 pre-read details CBA sensitivity/variant methodology and granular cost framework for GB balancing and settlement reforms |
Balancing · MULTI-TIMEFRAME | United Kingdom | Generators (dispatchable and intermittent), Independent B2C suppliers +11 |
| 1 Oct 2026 | Go-live
NV Energy signs agreement to join CAISO's Extended Day-Ahead Market (EDAM), targeting 2028 start |
Energy · DAY-AHEAD | CAISO / West, United States | NV Energy, California ISO +9 |
| 7 Oct 2026 | Consultation deadline
Terna and Swissgrid Launch Public Consultation on Intraday Continuous Capacity Allocation Rules for IT-CH Border |
Energy · INTRADAY | Italy, Switzerland | Terna, Swissgrid +2 |
| 9 Oct 2026 | Consultation deadline
Elexon FMAR consultation notice reconfirmed with no new design or milestone details |
Flexibility · N/A | United Kingdom | System Operators (SOs), Distribution Network Operators (DNOs) +3 |
| 12 Oct 2026 | Consultation deadline
Commission consultation on Dutch Article 20(3) market reform plan confirmed with no new details |
Capacity · N/A | Netherlands | Dutch national authorities, European Commission (DG Energy) +5 |
| 13 Oct 2026 | Milestone
Elexon confirms P462 Workgroup meeting 18 held and full Assessment Procedure timetable through May 2027 unchanged |
Balancing · REAL-TIME | United Kingdom | National Grid ESO (Proposer), Generators receiving CfD support +4 |
| 15 Oct 2026 | Implementation deadline
BNetzA amends EE grid-cost allocation methodology to refine estimation of renewable capacity in third-party downstream networks |
Energy · N/A | Germany | Distribution network operators (Verteilnetzbetreiber), Transmission system operators (Übertragungsnetzbetreiber) +3 |
| 30 Oct 2026 | Stakeholder feedback
EU ETS1/MSR review: all three ADOPTION_WORKFLOW feedback deadlines now show 30 October 2026, a further one-day shift from the previously recorded 29 October date |
Carbon · MULTI-TIMEFRAME | Europe-wide / cross-border | Stationary industrial installations, Power generators +5 |
| 30 Oct 2026 | Stakeholder feedback
EU ETS1/MSR review: all three ADOPTION_WORKFLOW feedback deadlines now show 30 October 2026, a further one-day shift from the previously recorded 29 October date |
Carbon · MULTI-TIMEFRAME | Europe-wide / cross-border | Stationary industrial installations, Power generators +5 |
| 30 Oct 2026 | Stakeholder feedback
EU ETS1/MSR review: all three ADOPTION_WORKFLOW feedback deadlines now show 30 October 2026, a further one-day shift from the previously recorded 29 October date |
Carbon · MULTI-TIMEFRAME | Europe-wide / cross-border | Stationary industrial installations, Power generators +5 |
| 31 Oct 2026 | Implementation deadline
Elexon confirms interim exempt supply process closes 31 October 2026 as four ESNAs take over |
Capacity · N/A | United Kingdom | Licensed electricity suppliers, Licence-exempt suppliers (private wire networks, small suppliers, offshore facility suppliers) +4 |
| November 2026 | ||||
| 3 Nov 2026 | Consultation deadline
EU ETS1/MSR proposal feedback deadlines shift again — from November 2 to November 3, 2026 |
Carbon · N/A | Europe-wide / cross-border | ETS-covered stationary installations, Airlines +5 |
| 3 Nov 2026 | Consultation deadline
EU ETS1/MSR proposal feedback deadlines shift again — from November 2 to November 3, 2026 |
Carbon · N/A | Europe-wide / cross-border | ETS-covered stationary installations, Airlines +5 |
| 3 Nov 2026 | Consultation deadline
EU ETS1/MSR proposal feedback deadlines shift again — from November 2 to November 3, 2026 |
Carbon · N/A | Europe-wide / cross-border | ETS-covered stationary installations, Airlines +5 |
| 12 Nov 2026 | Review
NESO's BSC Modification P502 moves through Assessment Procedure to create Supplier/Aggregator compensation mechanism for ABSVD-driven imbalance adjustments |
Balancing · REAL-TIME | United Kingdom | Suppliers, Independent Aggregators +3 |
| 24 Nov 2026 | Implementation deadline
Nordic TSOs set 24 November 2026 for removal of indivisible-bid attribute in aFRR and mFRR capacity markets |
Balancing · MULTI-TIMEFRAME | Denmark, Finland, Norway, Sweden | Balancing Service Providers (BSPs), Nordic TSOs (Statnett, Svenska kraftnät, Energinet, Fingrid) +2 |
| 24 Nov 2026 | Implementation deadline
Nordic TSOs to remove 'Indivisible Bids Allowed' attribute, make Minimum Quantity mandatory in aFRR/mFRR capacity markets from 24 November 2026 |
Balancing · N/A | Denmark, Finland, Norway, Sweden | Balancing Service Providers (BSPs), Nordic TSOs |
| 25 Nov 2026 | Go-live
Nordic TSOs set 24 November 2026 for removal of indivisible-bid attribute in aFRR and mFRR capacity markets |
Balancing · MULTI-TIMEFRAME | Denmark, Finland, Norway, Sweden | Balancing Service Providers (BSPs), Nordic TSOs (Statnett, Svenska kraftnät, Energinet, Fingrid) +2 |
| 25 Nov 2026 | Go-live
Nordic TSOs to remove 'Indivisible Bids Allowed' attribute, make Minimum Quantity mandatory in aFRR/mFRR capacity markets from 24 November 2026 |
Balancing · N/A | Denmark, Finland, Norway, Sweden | Balancing Service Providers (BSPs), Nordic TSOs |
| December 2026 | ||||
| 9 Dec 2026 | Consultation deadline
BSC Modification P462: Removal of CfD/RO Subsidy Distortion from Balancing Mechanism Bid Prices Advances Through Assessment Procedure |
Balancing · REAL-TIME | United Kingdom | BSC Parties, Balancing Mechanism Units +4 |
| 9 Dec 2026 | Consultation deadline
Elexon confirms P462 Workgroup meeting 18 held and full Assessment Procedure timetable through May 2027 unchanged |
Balancing · REAL-TIME | United Kingdom | National Grid ESO (Proposer), Generators receiving CfD support +4 |
| 18 Dec 2026 | Consultation deadline
NESO's BSC Modification P502 moves through Assessment Procedure to create Supplier/Aggregator compensation mechanism for ABSVD-driven imbalance adjustments |
Balancing · REAL-TIME | United Kingdom | Suppliers, Independent Aggregators +3 |
| 31 Dec 2026 | Milestone
TenneT files long-term-solution report under 2026 loop-flow derogation, flags need for 2027 derogation |
Energy · DAY-AHEAD | Netherlands, Europe-wide / cross-border | TSOs (TenneT), National regulatory authorities (ACM) +5 |
| January 2027 | ||||
| 1 Jan 2027 | Go-live
BNetzA amends EE grid-cost allocation methodology to refine estimation of renewable capacity in third-party downstream networks |
Energy · N/A | Germany | Distribution network operators (Verteilnetzbetreiber), Transmission system operators (Übertragungsnetzbetreiber) +3 |
| 1 Jan 2027 | Implementation deadline
JAO document reveals fuller NSL rulebook: implicit GB-NO2 short-term coupling detailed alongside explicit long-term FTR-Option auctions, plus 2027 CBAM flow-tariff provision |
Capacity · MULTI-TIMEFRAME | Norway, United Kingdom | National Grid NSL Limited (NGNSL), Statnett +5 |
| 7 Jan 2027 | Auction
Commission publishes revised 2026 and 2027 EU ETS1 auction calendars with 190.5 million allowances entering the MSR |
Carbon · MULTI-TIMEFRAME | Ireland, United Kingdom, Europe-wide / cross-border | Power generators, Industrial installations +6 |
| 8 Jan 2027 | Auction
Commission publishes revised 2026 and 2027 EU ETS1 auction calendars with 190.5 million allowances entering the MSR |
Carbon · MULTI-TIMEFRAME | Ireland, United Kingdom, Europe-wide / cross-border | Power generators, Industrial installations +6 |
| 13 Jan 2027 | Auction
Commission publishes revised 2026 and 2027 EU ETS1 auction calendars with 190.5 million allowances entering the MSR |
Carbon · MULTI-TIMEFRAME | Ireland, United Kingdom, Europe-wide / cross-border | Power generators, Industrial installations +6 |
| 15 Jan 2027 | Review
NESO's BSC Modification P502 moves through Assessment Procedure to create Supplier/Aggregator compensation mechanism for ABSVD-driven imbalance adjustments |
Balancing · REAL-TIME | United Kingdom | Suppliers, Independent Aggregators +3 |
| 19 Jan 2027 | Regulatory decision
NESO's BSC Modification P502 moves through Assessment Procedure to create Supplier/Aggregator compensation mechanism for ABSVD-driven imbalance adjustments |
Balancing · REAL-TIME | United Kingdom | Suppliers, Independent Aggregators +3 |
| 21 Jan 2027 | Regulatory decision
ACER review of NEMOs’ EU market-algorithm amendment remains underway |
Energy · MULTI-TIMEFRAME | Europe-wide / cross-border | NEMOs, TSOs +1 |
| February 2027 | ||||
| 11 Feb 2027 | Regulatory decision
BSC Modification P462: Removal of CfD/RO Subsidy Distortion from Balancing Mechanism Bid Prices Advances Through Assessment Procedure |
Balancing · REAL-TIME | United Kingdom | BSC Parties, Balancing Mechanism Units +4 |
| 11 Feb 2027 | Review
P510: Fifth Workgroup Meeting Held as Scheduled, Assessment Report Deadline of 11 February 2027 Reaffirmed |
Energy · MULTI-TIMEFRAME | United Kingdom | Virtual Trading Parties, Virtual Lead Parties +3 |
| 11 Feb 2027 | Review
Elexon confirms P462 Workgroup meeting 18 held and full Assessment Procedure timetable through May 2027 unchanged |
Balancing · REAL-TIME | United Kingdom | National Grid ESO (Proposer), Generators receiving CfD support +4 |
| March 2027 | ||||
| 23 Mar 2027 | Consultation deadline
BSC Modification P462: Removal of CfD/RO Subsidy Distortion from Balancing Mechanism Bid Prices Advances Through Assessment Procedure |
Balancing · REAL-TIME | United Kingdom | BSC Parties, Balancing Mechanism Units +4 |
| 23 Mar 2027 | Consultation deadline
Elexon confirms P462 Workgroup meeting 18 held and full Assessment Procedure timetable through May 2027 unchanged |
Balancing · REAL-TIME | United Kingdom | National Grid ESO (Proposer), Generators receiving CfD support +4 |
| May 2027 | ||||
| 13 May 2027 | Regulatory decision
BSC Modification P462: Removal of CfD/RO Subsidy Distortion from Balancing Mechanism Bid Prices Advances Through Assessment Procedure |
Balancing · REAL-TIME | United Kingdom | BSC Parties, Balancing Mechanism Units +4 |
| 13 May 2027 | Review
Elexon confirms P462 Workgroup meeting 18 held and full Assessment Procedure timetable through May 2027 unchanged |
Balancing · REAL-TIME | United Kingdom | National Grid ESO (Proposer), Generators receiving CfD support +4 |
| 17 May 2027 | Regulatory decision
BSC Modification P462: Removal of CfD/RO Subsidy Distortion from Balancing Mechanism Bid Prices Advances Through Assessment Procedure |
Balancing · REAL-TIME | United Kingdom | BSC Parties, Balancing Mechanism Units +4 |
| 17 May 2027 | Regulatory decision
Elexon confirms P462 Workgroup meeting 18 held and full Assessment Procedure timetable through May 2027 unchanged |
Balancing · REAL-TIME | United Kingdom | National Grid ESO (Proposer), Generators receiving CfD support +4 |