EirGrid

Grid Code Modifications

Find a list of all modifications made to the Grid Code.

Housekeeping Modifications

The Grid Code needs to be adaptable and responsive - it is a living document that is constantly evolving, and so requires consistent maintenance in the form of housekeeping modifications.

A Grid Code Housekeeping Modification is a modification that:

  • Does not add or remove a requirement from any user of the Grid Code;
  • Does not make a material change or impact to the existing compliance of any user under the Grid Code;
  • Aims to ensure that the Grid Code is as accessible as possible, and that the form of each clause is well-structured and conveys the correct meaning.

Housekeeping of the Grid Code is an ongoing process, EirGrid, as TSO, is undergoing a streamlined process for housekeeping modifications from October to December 2024. 

The documents below track the status of housekeeping modifications.

The following Grid Code modifications include any updates made in version 6 and any updates made after version 6 was issued.

If you would like to make a modification to the Grid Code, complete the form linked below and send it to:

MPID
Title
Status
Effective Date
Grid Code Version

326

325

322

321

320

318

317

315

14

314

13

313

13

312

14

311

13

310

13

309

13

308

13

307

13

306

13

305

14

304

13

302

13

301

13

229(a)

13

300

12

299

298

12

297

12

296

11

278

11

294

12

293

292

11

291

11

290

11

289

11

288

10

287

10

286

10

285

10

284

9

283

9

282

9

281

9

280

9

279

9

278

277

The TSO came to the conclusion that no modification was required to the Grid Code. It was agreed with IWEA that the TSO will issue a Grid Code clarification note along with guiding principles to be used when assessing Grid Code compliance.

276 (a) revised

9

276

Incorporation of: Approved European Network Demand Connection Code (DCC) | Approved European Network Code Requirements for Generators – Operational Notification Procedure & Derogation Process | Housekeeping Modification

MPID 276 Proposal Papers (ZIP, 8.02MB)

12/03/2020 – MPID 276 (a) - decision deferred by the CRU.

12/03/2020 – Partial approval from CRU for MPID 276 (b) (c) and (d). (PDF, 0.13MB)

8.1

275

8

274

7

273

7

272

7

271 (a)

7

271

Consultation response period is closed

7

270

7

269

7

268

239

7

267

7

266

7

265

ON HOLD, Proposed Modification 11 February 2015, Proposed Modification 12 November 2014

264

7

263

Proposed Modification 11 February 2015, Proposed Modification 12 November 2014

Constitution and Rules of the Grid Code Review Panel (PDF, 0.18MB)

262

ON HOLD, ‌Proposed Modification 11 February 2015, Proposed Modification 12 November 2014

261

7

260

6

259

6

258

APPROVED

6

257

7

256

6

255

6

254

7

253

6

252

7

251

6

250

7

249

6

248

6

247

6

246

6

245

15/04/14

6

244

6

229

Approved in Principle – 04/04/2014

223

7