## Eu Network Codes 'Phase 2' Implementation

Mike Thorne, EU Policy Manager 

## 1St October 2015 - Bal & Int Change Delivered In Respect Of The Following:

Balancing Code requirements - GB balancing regime broadly 
aligned, however changes required as follows: 
New **nominations** process at Interconnection Points (Shipper to TSO) Adjustment to derivation of **System Marginal Prices** 
New **demand forecast** at D-1 12:00 
Related Interoperability & Data Exchange Code requirements - 
complementary changes required as follows: 
Nominations **matching** process at Interconnection Points (TSO to TSO) Introduction of new **gas allocation** regime at Interconnection Points 
Allocation is equal to shipper nominations ('**Allocate as nominate**') Operational Balancing Account ('OBA') 
Related revisions to '**Interconnection Agreements**' 

## 1St October 2015 - Gas Day Change

Gas day has changed to 5-5 for balancing zone (BAL) at IPs (CAM) 
Gas Day interface solution (Option A) operating as expected 
NG now accepting EOD measurements via XML, as per industry solution Worked closely with Poyry and the sub-terminals up to and immediately 
after "go-live" to solve individual issues and ensure smooth operation from 1st October 
All NTS operational metering equipment reconfigured successfully Licence, UNC and UNC associated documents consequential changes 
complete  
Energy balancing currently operating in a "typical" manner, despite 
concerns over accuracy of shipper "5-5" nominations 

## 1St November 2015 - Cam Change Delivered In Respect Of The Following:

New standard EU wide auctions for interconnection Points (IPs): 
standard capacity products, auction calendar, auction algorithm 
Capacity to be offered on a **bundled** basis with capacity from the 
adjacent TSO. 
capacity is converted and offered in kWh/h at the Bacton IPs. 
IP Capacity must be offered by the TSO via a joint web based 
booking platform. 
Following industry consultation, NG agreed with adjacent TSOs to 
use the **PRISMA** booking platform 

## General Ip Auctions Overview Since 1St Nov

Auction processes running smoothly >3000 NG auctions held on PRISMA since first day ahead auction 
on 31st Oct 
18+ shippers actively taking part in IP auctions on PRISMA at NG 
points (40+ Registered on PRISMA) 
A mixture of bundled and unbundled capacity offered to the market All IP bids have so far been allocated in full 
IP auctions have all cleared at reserve price (no premium) 
Shippers also successfully trading capacity at IPs 

## General Ip Auctions Overview Since 1St Nov

No competition has taken place at the 1:2 Interconnection Points, 
as NG has more available capacity than the adjacent TSOs 
Bacton UKCS update: 
continues under prevailing GB regime with new baseline 
NGG have released non-obligated capacity to meet market demand at 
the ASEP 

## Phase 2 - Systems Implementation Systems Implementation Thanks To Everyone Involved With Systems Implementation

Overall a success, most complex change since Exit Reform 
There have been some issues to resolve We recognise there are some learning points for us 
 

## Challenging, Multi-Dimensional Changes

Multiple TSOs and DNs, all with slightly different requirements Interfaces with existing shipper systems 
New interfaces with PRISMA and TSO systems 
Multiple planning and testing schedules All elements delivered on time 

## Resolved Systems Issues

Nominations 'lock out' issue during the matching process 
Start time not automatically populating for within-day matching 
cycles starting at hour bars 21:00, 22:00 and 23:00 
Shipper balance screens indicating incorrect confirmed 
nominations 
Users unable to re-nominate a positive value if a zero entered as 
the original nomination 
Day-ahead re-nominations submitted between 04:00 and 05:00 Day-ahead interruptible auction failed to run on 2 occasions - 
PRISMA technical issue 

## Issues Awaiting Resolution

Locked out of amending SSN as a result of entering incorrect 
information 
In the interim, Users can contact the Xoserve helpdesk to get the 
erroneous information deleted 
Re-nominating day ahead with APIs (found following 22/11 patch)  
No issue if re-nominating directly on screen or within day 
Zero firm price within day is currently set to 0.00000001p/kWh/d 
 PRISMA limitation - very small impact seen (a few pence only) 
Fixes for these issues are being worked on but we are not currently 
able to advise delivery dates 

## Phase 2 - Next Steps Lessons Learned Workshop Planned For 7Th January

To follow Transmission Workgroup meeting 
Invitations to be sent out shortly Chris Logue leading