Release Circulars

To subscribe to receive Release Circulars, please contact releases@elexon.co.uk

Other circulars can be found at the following pages: ELEXON Circulars, Change Proposal Circulars, and MDD Circulars.

CVA and SVA Release Circulars

• SVA Data Catalogue Volume 1 Appendix A  [645 Kb] 
  Version: v36.0Issued On: 23-February-2012Release Circular Type: SVA
• CRA Service Description Redlined v16.0  [670 Kb] 
  Version: 16.0Issued On: 23-February-2012Release Circular Type: CVA
• SVA CC120 - Invitation to review Configurable Items amended as part of the February 2012 Release of BSC Systems  [132 Kb] 
  Version: 1.0Issued On: 21-October-2011Release Circular Type: SVA
• SVA CC120a - Attachment 1: Review Form  [150 Kb] 
  Version: 1.0Issued On: 21-October-2011Release Circular Type: SVA
• SVA CC119a - Attachment 1: Review Form  [183 Kb] 
  Version: 1.0Issued On: 15-July-2011Release Circular Type: SVA
• SVA CC119 - Invitation to review Configurable Items amended for the November 2011 BSC Systems Release (CP1325, CP1334 and P253)  [148 Kb] 
  Version: 1.0Issued On: 15-July-2011Release Circular Type: SVA
• SVA CC118 - Invitation to review Configurable Items amended as part of the June 2011 BSC Systems Release (CP1334)  [107 Kb] 
  Version: 1.0Issued On: 03-March-2011Release Circular Type: SVA
• SVA CC118a - Attachment 1: Review Form  [132 Kb] 
  Version: V1.0Issued On: 03-March-2011Release Circular Type: SVA
• SVA CC116 - CP1335: Request for Communications Provider details  [84 Kb] 
  Version: 1.0Issued On: 30-November-2010Release Circular Type: SVA
• P243 and P244 Business Requirements Solution  [503 Kb] 
  Version: 3.0Issued On: 27-July-2010Release Circular Type: CVA
• CVA CC234 - Invitation to review documents we’ve amended for the November 2010 BSC Systems Release  [98 Kb] 
  Version: 1.0Issued On: 02-June-2010Release Circular Type: CVA
• CVA CC234a - Attachment A: Review Form  [146 Kb] 
  Version: 1.0Issued On: 02-June-2010Release Circular Type: CVA
• SVA CC115 - P246 Implementation - Clarification on P246 D0030 File Design for DNOs  [55 Kb] 
  Version: 1.0Issued On: 08-March-2010Release Circular Type: SVA
• CVA CC233 - Invitation to Review a Configurable Item amended as part of the February 2010 BSC Systems Release (P248)  [61 Kb] 
  Version: 1.0Issued On: 24-February-2010Release Circular Type: CVA
• CVA CC233a - Attachment A: Review Form  [125 Kb] 
  Version: 1.0Issued On: 24-February-2010Release Circular Type: CVA
• SVA CC114 - Briefing Note for LDSOs on P246 Solution  [141 Kb] 
  Version: 1.0Issued On: 23-February-2010Release Circular Type: SVA
• SVA CC113 - Invitation to Review of Configurable Items amended for the February 2010 BSC Systems  [80 Kb] 
  Version: 1.0Issued On: 12-February-2010Release Circular Type: SVA
• SVA CC113a - Attachment 1: Review Form  [125 Kb] 
  Version: 1.0Issued On: 12-February-2010Release Circular Type: SVA
• SVA CC112 – CP1311 Implementation – Delay of Effective Date for BSCP504  [54 Kb] 
  Version: 1.0Issued On: 07-January-2010Release Circular Type: SVA
• SVA CC111 – Invitation to Review of Configurable Items amended for the February 2010 BSC Systems Release (CP1311)  [25 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: SVA
• SVA CC111a - Attachment 1: Review Form  [133 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: SVA
• CVA CC232 - Invitation to Review Configurable Items amended for the February 2010 BSC Systems Release (CP1301, CP1313 and CP1314)  [37 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: CVA
• CVA CC232a - Attachment A: Review Form  [157 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: CVA
• SVA CC110 - New Obligations introduced for P223 on 1 December 2009  [92 Kb] 
  Version: 1.0Issued On: 18-November-2009Release Circular Type: SVA
• SVA CC109 - Early Release of Meter Technical Details - incorrect information in SVA CC108  [30 Kb] 
  Version: 1.0Issued On: 30-October-2009Release Circular Type: SVA
• SVA CC108 - Early Release of Meter Technical Details and PARMS Reporting  [33 Kb] 
  Version: 1.0Issued On: 15-October-2009Release Circular Type: SVA
• SVA CC107 - Implementation of P223 and Testing of Profiling data  [30 Kb] 
  Version: 1.0Issued On: 07-October-2009Release Circular Type: SVA
• CVA CC231 - Clarifying a potential ambiguity with the Interface Definition and Design  [51 Kb] 
  Version: 1.0Issued On: 02-October-2009Release Circular Type: CVA
• CVA CC230 - November 09 Release - New SAA-I014 Sub-Flow 1 and TIBCO Upgrade  [58 Kb] 
  Version: 1.0Issued On: 24-September-2009Release Circular Type: CVA
• CVA CC229 - National Grid consultation for the Balancing Services Adjustment Data (BSAD) methodology statement and the System Management Actions Flagging (SMAF) methodology statement  [95 Kb] 
  Version: 1.0Issued On: 10-September-2009Release Circular Type: CVA
• SVA CC106 - BSCP201 'Black Start and Fuel Security Contingency Provisions and Claims Processes' (new BSCP) industry review  [96 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: SVA
• SVA CC106a - Attachment 1: Review Form  [135 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: SVA
• CVA CC228 - Invitation to Review Configurable Items amended for the November 09 BSC Systems Release (P231 and P232)  [96 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: CVA
• CVA CC228a - Attachment A: Review Form  [135 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: CVA
• CVA CC227 - Invitation to Review CVA Code Subsidiary Documents and Configurable Items amended for the November 2009 BSC Systems Release (P217)  [104 Kb] 
  Version: 1.0Issued On: 31-July-2009Release Circular Type: CVA
• CVA CC227a - Attachment A: Review Form  [134 Kb] 
  Version: 1.0Issued On: 31-July-2009Release Circular Type: CVA
• CVA CC226 - Changes to the structure of TIBCO messages for P217  [55 Kb] 
  Version: 1.0Issued On: 17-July-2009Release Circular Type: CVA
• CVA CC226a - Attachment A: Review Form  [127 Kb] 
  Version: 1.0Issued On: 17-July-2009Release Circular Type: CVA
• CVA CC225 - TIBCO Upgrade and Testing  [52 Kb] 
  Version: 1.0Issued On: 15-July-2009Release Circular Type: CVA
• CVA CC224 - Invitation to Review Configurable Items amended for the November 09 BSC Systems Release (P217, P235, CP1283  [98 Kb] 
  Version: 1.0Issued On: 08-July-2009Release Circular Type: CVA
• CVA CC224a - Attachment A: Review Form  [205 Kb] 
  Version: 1.0Issued On: 08-July-2009Release Circular Type: CVA
• SVA CC105 – Notification of revised file format in BSCP510 following Industry Review (P223)  [24 Kb] 
  Version: 1.0Issued On: 15-June-2009Release Circular Type: SVA
• SVA CC105a - Attachment 1: Review Form  [134 Kb] 
  Version: 1.0Issued On: 15-June-2009Release Circular Type: SVA
• CVA CC223 - Correction of the Excel versions of the NETA IDD parts 1 and 2 for the June 09 BSC Systems Release (P215)  [29 Kb] 
  Version: 1.0Issued On: 04-June-2009Release Circular Type: CVA
• CVA CC222 - Invitation to Review CVA Code Subsidiary Documents and Additional Configurable Items amended for the November 09 BSC Systems Release (P217)  [110 Kb] 
  Version: 1.0Issued On: 27-May-2009Release Circular Type: CVA
• CVA CC222a - Attachment A: Review Form  [167 Kb] 
  Version: 1.0Issued On: 27-May-2009Release Circular Type: CVA
• SVA CC104 - Invitation to Review Amended SVA Code Subsidiary Documents for the November 09 BSC Systems Release  [36 Kb] 
  Version: 1.0Issued On: 13-May-2009Release Circular Type: SVA
• SVA CC104a - Attachment 1: Review Form  [150 Kb] 
  Version: 1.0Issued On: 13-May-2009Release Circular Type: SVA
• CVA CC221 - Invitation to review further CVA Code Subsidiary Documents created or amended for the June 09 BSC Systems Release (P226)  [33 Kb] 
  Version: 1.0Issued On: 03-April-2009Release Circular Type: CVA
• CVA CC221a - Attachment A: Review Form  [128 Kb] 
  Version: 1.0Issued On: 03-April-2009Release Circular Type: CVA
• CVA CC220 - Invitation to Review CVA Configurable Items amended for the November 09 BSC Systems Release (P217)  [104 Kb] 
  Version: 1.0Issued On: 26-March-2009Release Circular Type: CVA
• CVA CC220a - Attachment A: Review Form  [161 Kb] 
  Version: 1.0Issued On: 26-March-2009Release Circular Type: CVA
• CVA CC219 - Invitation to review CVA Code Subsidiary Documents created or amended for the June 09 BSC Systems Release (P226)  [33 Kb] 
  Version: 1.0Issued On: 18-March-2009Release Circular Type: CVA
• CVA CC219a - Attachment A: Review Form  [128 Kb] 
  Version: 1.0Issued On: 18-March-2009Release Circular Type: CVA
• SVA CC103 – Invitation to Review of SVA Code Subsidiary Documents amended for the June 09 BSC Systems Release (P215 and P222)  [96 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: SVA
• SVA CC103a - Attachment 1: Review Form  [146 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: SVA
• CVA CC217 - Invitation to Review New and Amended CVA Code Subsidiary Documents for P216  [61 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CVA CC217a - Attachment A: Review Form  [175 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CVA CC218 - Invitation to Review CVA Code Subsidiary Documents amended for the June 09 BSC Systems Release (P215)  [96 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CVA CC218a - Attachment A: Review Form  [181 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• SVA CC102 - Invitation to Review New and Amended SVA Code Subsidiary Documents for P216  [66 Kb] 
  Version: 1.0Issued On: 05-January-2009Release Circular Type: SVA
• SVA CC102a - Attachment 1: Review Form  [179 Kb] 
  Version: 1.0Issued On: 05-January-2009Release Circular Type: SVA
• PARMS URS  [725 Kb] 
  Version: 0.3Issued On: N/ARelease Circular Type: SVA
• TEST STRATEGY for the June 11 BSC Systems Release_v1.0  [526 Kb] 
  Version: 1.0Issued On: N/ARelease Circular Type: SVA
• P253_BSCP508_v0.5_redlined  [1510 Kb] 
  Version: 0.5Issued On: N/ARelease Circular Type: SVA
• CRA URS  [1184 Kb] 
  Version: 16.0Issued On: N/ARelease Circular Type: CVA

• CRA Service Description Redlined v16.0  [670 Kb] 
  Version: 16.0Issued On: 23-February-2012Release Circular Type: CVA
• P243 and P244 Business Requirements Solution  [503 Kb] 
  Version: 3.0Issued On: 27-July-2010Release Circular Type: CVA
• CVA CC234 - Invitation to review documents we’ve amended for the November 2010 BSC Systems Release  [98 Kb] 
  Version: 1.0Issued On: 02-June-2010Release Circular Type: CVA
• CVA CC234a - Attachment A: Review Form  [146 Kb] 
  Version: 1.0Issued On: 02-June-2010Release Circular Type: CVA
• CVA CC233 - Invitation to Review a Configurable Item amended as part of the February 2010 BSC Systems Release (P248)  [61 Kb] 
  Version: 1.0Issued On: 24-February-2010Release Circular Type: CVA
• CVA CC233a - Attachment A: Review Form  [125 Kb] 
  Version: 1.0Issued On: 24-February-2010Release Circular Type: CVA
• CVA CC232 - Invitation to Review Configurable Items amended for the February 2010 BSC Systems Release (CP1301, CP1313 and CP1314)  [37 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: CVA
• CVA CC232a - Attachment A: Review Form  [157 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: CVA
• CVA CC231 - Clarifying a potential ambiguity with the Interface Definition and Design  [51 Kb] 
  Version: 1.0Issued On: 02-October-2009Release Circular Type: CVA
• CVA CC230 - November 09 Release - New SAA-I014 Sub-Flow 1 and TIBCO Upgrade  [58 Kb] 
  Version: 1.0Issued On: 24-September-2009Release Circular Type: CVA
• CVA CC229 - National Grid consultation for the Balancing Services Adjustment Data (BSAD) methodology statement and the System Management Actions Flagging (SMAF) methodology statement  [95 Kb] 
  Version: 1.0Issued On: 10-September-2009Release Circular Type: CVA
• CVA CC228 - Invitation to Review Configurable Items amended for the November 09 BSC Systems Release (P231 and P232)  [96 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: CVA
• CVA CC228a - Attachment A: Review Form  [135 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: CVA
• CVA CC227 - Invitation to Review CVA Code Subsidiary Documents and Configurable Items amended for the November 2009 BSC Systems Release (P217)  [104 Kb] 
  Version: 1.0Issued On: 31-July-2009Release Circular Type: CVA
• CVA CC227a - Attachment A: Review Form  [134 Kb] 
  Version: 1.0Issued On: 31-July-2009Release Circular Type: CVA
• CVA CC226 - Changes to the structure of TIBCO messages for P217  [55 Kb] 
  Version: 1.0Issued On: 17-July-2009Release Circular Type: CVA
• CVA CC226a - Attachment A: Review Form  [127 Kb] 
  Version: 1.0Issued On: 17-July-2009Release Circular Type: CVA
• CVA CC225 - TIBCO Upgrade and Testing  [52 Kb] 
  Version: 1.0Issued On: 15-July-2009Release Circular Type: CVA
• CVA CC224 - Invitation to Review Configurable Items amended for the November 09 BSC Systems Release (P217, P235, CP1283  [98 Kb] 
  Version: 1.0Issued On: 08-July-2009Release Circular Type: CVA
• CVA CC224a - Attachment A: Review Form  [205 Kb] 
  Version: 1.0Issued On: 08-July-2009Release Circular Type: CVA
• CVA CC223 - Correction of the Excel versions of the NETA IDD parts 1 and 2 for the June 09 BSC Systems Release (P215)  [29 Kb] 
  Version: 1.0Issued On: 04-June-2009Release Circular Type: CVA
• CVA CC222 - Invitation to Review CVA Code Subsidiary Documents and Additional Configurable Items amended for the November 09 BSC Systems Release (P217)  [110 Kb] 
  Version: 1.0Issued On: 27-May-2009Release Circular Type: CVA
• CVA CC222a - Attachment A: Review Form  [167 Kb] 
  Version: 1.0Issued On: 27-May-2009Release Circular Type: CVA
• CVA CC221 - Invitation to review further CVA Code Subsidiary Documents created or amended for the June 09 BSC Systems Release (P226)  [33 Kb] 
  Version: 1.0Issued On: 03-April-2009Release Circular Type: CVA
• CVA CC221a - Attachment A: Review Form  [128 Kb] 
  Version: 1.0Issued On: 03-April-2009Release Circular Type: CVA
• CVA CC220 - Invitation to Review CVA Configurable Items amended for the November 09 BSC Systems Release (P217)  [104 Kb] 
  Version: 1.0Issued On: 26-March-2009Release Circular Type: CVA
• CVA CC220a - Attachment A: Review Form  [161 Kb] 
  Version: 1.0Issued On: 26-March-2009Release Circular Type: CVA
• CVA CC219 - Invitation to review CVA Code Subsidiary Documents created or amended for the June 09 BSC Systems Release (P226)  [33 Kb] 
  Version: 1.0Issued On: 18-March-2009Release Circular Type: CVA
• CVA CC219a - Attachment A: Review Form  [128 Kb] 
  Version: 1.0Issued On: 18-March-2009Release Circular Type: CVA
• CVA CC217 - Invitation to Review New and Amended CVA Code Subsidiary Documents for P216  [61 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CVA CC217a - Attachment A: Review Form  [175 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CVA CC218 - Invitation to Review CVA Code Subsidiary Documents amended for the June 09 BSC Systems Release (P215)  [96 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CVA CC218a - Attachment A: Review Form  [181 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: CVA
• CRA URS  [1184 Kb] 
  Version: 16.0Issued On: N/ARelease Circular Type: CVA

• SVA Data Catalogue Volume 1 Appendix A  [645 Kb] 
  Version: v36.0Issued On: 23-February-2012Release Circular Type: SVA
• SVA CC120 - Invitation to review Configurable Items amended as part of the February 2012 Release of BSC Systems  [132 Kb] 
  Version: 1.0Issued On: 21-October-2011Release Circular Type: SVA
• SVA CC120a - Attachment 1: Review Form  [150 Kb] 
  Version: 1.0Issued On: 21-October-2011Release Circular Type: SVA
• SVA CC119a - Attachment 1: Review Form  [183 Kb] 
  Version: 1.0Issued On: 15-July-2011Release Circular Type: SVA
• SVA CC119 - Invitation to review Configurable Items amended for the November 2011 BSC Systems Release (CP1325, CP1334 and P253)  [148 Kb] 
  Version: 1.0Issued On: 15-July-2011Release Circular Type: SVA
• SVA CC118 - Invitation to review Configurable Items amended as part of the June 2011 BSC Systems Release (CP1334)  [107 Kb] 
  Version: 1.0Issued On: 03-March-2011Release Circular Type: SVA
• SVA CC118a - Attachment 1: Review Form  [132 Kb] 
  Version: V1.0Issued On: 03-March-2011Release Circular Type: SVA
• SVA CC116 - CP1335: Request for Communications Provider details  [84 Kb] 
  Version: 1.0Issued On: 30-November-2010Release Circular Type: SVA
• SVA CC115 - P246 Implementation - Clarification on P246 D0030 File Design for DNOs  [55 Kb] 
  Version: 1.0Issued On: 08-March-2010Release Circular Type: SVA
• SVA CC114 - Briefing Note for LDSOs on P246 Solution  [141 Kb] 
  Version: 1.0Issued On: 23-February-2010Release Circular Type: SVA
• SVA CC113 - Invitation to Review of Configurable Items amended for the February 2010 BSC Systems  [80 Kb] 
  Version: 1.0Issued On: 12-February-2010Release Circular Type: SVA
• SVA CC113a - Attachment 1: Review Form  [125 Kb] 
  Version: 1.0Issued On: 12-February-2010Release Circular Type: SVA
• SVA CC112 – CP1311 Implementation – Delay of Effective Date for BSCP504  [54 Kb] 
  Version: 1.0Issued On: 07-January-2010Release Circular Type: SVA
• SVA CC111 – Invitation to Review of Configurable Items amended for the February 2010 BSC Systems Release (CP1311)  [25 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: SVA
• SVA CC111a - Attachment 1: Review Form  [133 Kb] 
  Version: 1.0Issued On: 21-December-2009Release Circular Type: SVA
• SVA CC110 - New Obligations introduced for P223 on 1 December 2009  [92 Kb] 
  Version: 1.0Issued On: 18-November-2009Release Circular Type: SVA
• SVA CC109 - Early Release of Meter Technical Details - incorrect information in SVA CC108  [30 Kb] 
  Version: 1.0Issued On: 30-October-2009Release Circular Type: SVA
• SVA CC108 - Early Release of Meter Technical Details and PARMS Reporting  [33 Kb] 
  Version: 1.0Issued On: 15-October-2009Release Circular Type: SVA
• SVA CC107 - Implementation of P223 and Testing of Profiling data  [30 Kb] 
  Version: 1.0Issued On: 07-October-2009Release Circular Type: SVA
• SVA CC106 - BSCP201 'Black Start and Fuel Security Contingency Provisions and Claims Processes' (new BSCP) industry review  [96 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: SVA
• SVA CC106a - Attachment 1: Review Form  [135 Kb] 
  Version: 1.0Issued On: 09-September-2009Release Circular Type: SVA
• SVA CC105 – Notification of revised file format in BSCP510 following Industry Review (P223)  [24 Kb] 
  Version: 1.0Issued On: 15-June-2009Release Circular Type: SVA
• SVA CC105a - Attachment 1: Review Form  [134 Kb] 
  Version: 1.0Issued On: 15-June-2009Release Circular Type: SVA
• SVA CC104 - Invitation to Review Amended SVA Code Subsidiary Documents for the November 09 BSC Systems Release  [36 Kb] 
  Version: 1.0Issued On: 13-May-2009Release Circular Type: SVA
• SVA CC104a - Attachment 1: Review Form  [150 Kb] 
  Version: 1.0Issued On: 13-May-2009Release Circular Type: SVA
• SVA CC103 – Invitation to Review of SVA Code Subsidiary Documents amended for the June 09 BSC Systems Release (P215 and P222)  [96 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: SVA
• SVA CC103a - Attachment 1: Review Form  [146 Kb] 
  Version: 1.0Issued On: 16-January-2009Release Circular Type: SVA
• SVA CC102 - Invitation to Review New and Amended SVA Code Subsidiary Documents for P216  [66 Kb] 
  Version: 1.0Issued On: 05-January-2009Release Circular Type: SVA
• SVA CC102a - Attachment 1: Review Form  [179 Kb] 
  Version: 1.0Issued On: 05-January-2009Release Circular Type: SVA
• PARMS URS  [725 Kb] 
  Version: 0.3Issued On: N/ARelease Circular Type: SVA
• TEST STRATEGY for the June 11 BSC Systems Release_v1.0  [526 Kb] 
  Version: 1.0Issued On: N/ARelease Circular Type: SVA
• P253_BSCP508_v0.5_redlined  [1510 Kb] 
  Version: 0.5Issued On: N/ARelease Circular Type: SVA