Grid Code Modifications

This table includes modifications included in Grid Code version 6 and modifications approved and proposed since the issue of Grid Code version 6. 

MPID

Title

Status

Effective Date

Grid Code Version

271 Proposed Grid Code modifications for I-SEM Consultation response period is closed The CER will set the effective date once the go-live date for I-SEM has been formally confirmed - CER Approval  
270 Proposed Housekeeping Modification WFPS 1.6.2.5 MPID 270 Recommendation Paper 04/05/2017 - CER Approval  
269 MPID 269 Power Park Proposal MPID 269 Power Park Module Recommendation Paper 10/10/2016 - CER Approval  
268

MPID 268 Outturn Availability Proposal

MPID 268 Supplementary Note

MPID 268 Outturn Availability Recommendation Paper 10/10/2016 - CER Approval  
239

MPID 239 Dynamic Models Proposal

TSO Position Paper on Retrospective Application of MPID 239

Dynamic Model Validation Guidelines Draft

Dynamic Models Specifications for Users

Note on Electromagnetic  Transient Models

MPID 239 Dynamic Models Recommendation Paper

MPID 239 Dynamic Models Recommendation Supporting Paper

01/06/2016 - CER Approval  
267

MPID 267 Failure to Follow Notice to Synchronise Definition Proposal

MPID 267 Recommendation Paper

22/03/16 - CER Approval  

266

MPID 266 Acronyms Proposal‌‌‌

MPID 266 Recommendation Paper

28/09/15 - CER Approval

265

MPID 265 Reactive Power‌‌

ON HOLD

Proposed Modification 11 February 2015

Proposed Modification 12 November 2014

264

‌‌MPID 264 Power Quality Harmonics‌

MPID 264 Power Quality Recommendation Paper

28/09/15 - CER Approval

263

Grid Code Constitution and Rules Version 6‌

Proposed Modification 11 February 2015

Proposed Modification 12 November 2014

Constitution and Rules of the Grid Code Review Panel

262

MPID 262 WFPS Curve 2‌

ON HOLD

‌Proposed Modification 11 February 2015

Proposed Modification 12 November 2014

261

MPID 261 Connection Offers 

MPID 261 Connections Offers Recommendation Paper

28/09/15 - CER Approval

260

Housekeeping of WFPS clause WFPS1.5.4.1‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

259

Definition Re-ordering‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

258

DSU Signal List‌‌‌

‌ APPROVED

19/01/15 - CER Approval

6

257

MPID 257 DSU Performance Monitoring (GCRP 40)‌‌‌‌

DSU Performance Monitoring‌‌‌ (GCRP 39)

MPID 257 DSU Performance Monitoring of DSU Dispatch Instructions Recommendation

25/09/15 - CER Approval

256

DSU Notice Time‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

255

DSU Housekeeping‌‌‌

‌MPID 255 Recommendation Paper- APPROVED

19/01/15 - CER Approval

6

254

MPID 254 DSU Frequency Requirements (GCRP 40)‌‌‌‌

DSU Frequency Requirements‌‌‌ (GCRP 39)

MPID 254 DSU Frequency Requirements Recommendation Paper

28/09/15 - CER Approval

253

DSU Application‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

252

‌‌‌MPID 252 POR Definition‌

MPID 252 Recommendation Paper

28/09/15 - CER Approval

251

WFPS Active Power Control‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

250

WFPS Signal Lists‌‌‌

MPID 250 Recommendation Paper 

28/09/15 - CER Approval

249

Interconnector AGC‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

248

WFPS Voltage Regulation‌‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

247

DS3 Clarification Post Fault Active Power Recovery‌‌

Recommendation Paper - APPROVED

19/01/15 - CER Approval

6

246 

Housekeeping DS3 Reactive Power‌

Recommendation Paper‌ - APPROVED

24/02/14 - CER Approval

6

245 

Housekeeping DS3 Frequency Response‌

MPID245 Recommendation Paper - APPROVED

15/04/14 

6

244

Housekeeping of Clause OC10.4.5.2‌

Recommendation Paper‌ - APPROVED

24/02/14  - CER Approval

6

229 RoCof Definition Proposal Recommendation Paper APPROVED IN PRINCIPLE
RoCof Definition Proposal
Rate of Change Frequency Decision Paper
Approved in Principle – 04/04/2014  
223 ‌MPID 223 Fail to Sync November 2014

MPID 223 Fail to Sync Recommendation Paper

ESB GWN Letter to CER on MPID 223 Fail to Sync
28/09/15 – CER Approval