There are three types of long-term exit capacity application windows:
Enduring annual exit (flat) capacity increase (EAFLEC) - This application window is for capacity covering the period Y+4 to Y+6. The capacity bought in this application window is enduring and can be increased or decreased in a later application window (subject to user commitment). The application period for this auction is 1 to 31 July where the bid window will be open from 8am to 5pm on each business day.
Enduring annual exit (flat) capacity decrease (EAFLEC) - This allows a user to decrease their enduring capacity holdings from Year Y+1 (October following the July window). Further decreases and increases can be requested in subsequent application windows. The application period for this auction is 1 to 15 July where the bid window will be open from 8am to 5pm on each business day.
Annual NTS (flat) exit capacity (AFLEC) - This is for capacity covering the period Y+1 to Y+3. The capacity allocated in this application window is not enduring and therefore cannot be increased or decreased. If capacity is requested in this application window for Y+2, in the following year's application window the capacity will show as Y+1 and any further annual capacity requested will be in addition to the original Y+2 capacity. The application period for this application window is 1 to 31 July where the bid window will be open from 8am to 5pm on each business day.
All submitted requests are subject to analysis by us. Successful applications submitted in the AFLEC window will be allocated within ten business days of the application window closing. Successful applications submitted in the EAFLEC window will be allocated on or before 30 September.
The unit price (p/kWh) for capacity brought in both AFLEC and EAFLEC is published on the Joint Office of Gas Transporters website. All conditions and requirements for all of the above mentioned application window can be found in UNC Transportation, Section B, Sub Section 3
There are several types of daily application in which users can bid for and purchase firm exit (flat) capacity and daily off-peak exit (flat) capacity.
Note that firm capacity is denoted in the Gemini exit system as “NTS EXIT FLAT CAPACITY FIRM PRIMARY”.
Day-ahead daily exit capacity (DADNEX) - unsold obligated firm exit (flat) capacity will be made available in the DADNEX auction. Requests can be submitted for the DADNEX auction in the Gemini exit system from D-7 05:00 up until D-1 14:00 and will be allocated at D-1 between 15:00 and 16:00. Any remaining unsold following allocation of the DADNEX auction will roll over and be made available in the WDDNEX auction.
Within-day daily exit capacity (WDDNEX) - Requests can be captured for the WDDNEX auction in the Gemini exit system from D-1 14:00 up until midnight on the gas day. Multiple allocations will always take place on the gas day at 08:00, 14:00, 18:00, 22:00 and 01:00 and (if required) allocations can be held at any time during the gas day with an hour's notice.
Daily off-peak exit capacity (DONEX) - Off-peak capacity is not a firm product and is denoted by the Gemini exit system as “NTS exit flat capacity off-peak primary”. This product is sold via the DONEX auction. Requests can be captured for the DONEX auction in the Gemini exit system from D-7 05:00 up until D-1 14:00 and is allocated at D-1 between 15:00 and 16:00. The DONEX auction is a blind, pay-as-bid auction with a zero reserve price.
DADNEX and WDDNEX are both blind, pay-as-bid auctions with no discount on the annual reserve price (i.e., the reserve price is the same as for the longer term capacity application processes). The reserve prices for all exit points are published in the Statement of Gas Transportation Charges that can be found in the charging section of our website or on the Joint Office of Gas Transporters website.
All auction bids will be allocated based on price (highest first) until all unsold capacity has been allocated (in line with the allocation principles as described in UNC Section B – Annex B1). Where bids exceed the available unsold quantity, we may allocate these but will do so at our sole discretion.