A producer, supplier and aggregator finance plan must keep EPİAŞ collateral operations and advance cash on the same calendar. Collateral is calculated by 14:30 each business day; same-day 17:00 IDM and next-business-day 11:00 DAM+IDM look at that lock. The advance is the energy bill of the ended delivery day: buys leave at 15:00, sales arrive by 17:00. Merging them into one “EPİAŞ took it” line causes a cash crunch, a 17:00 IDM stop and an 11:00 DAM ban the next morning. The DAM-buy example below only shows how that mix-up looks; the topic is collateral operations and finance planning. PTF Makası 2026 rehberimizde covered hourly prices; here that price becomes a lock line or a cash line on the plan.
14:30
Collateral calc
Each business day, EPİAŞ
17:00
IDM check
Same day
11:00
DAM+IDM check
Next business day
15:00 / 17:00
Advance cash
Debtor / creditor
Why collateral and advance are separate lines on the plan
Both sit on EPİAŞ screens and at Takasbank; both are “millions of TL”. The purpose differs. Collateral must already be posted before DAM bids; the 12:30–13:00 check uses the previous 14:30 figure. After a match the required lock often rises — “I bought, so collateral dropped” is wrong. The advance is the full net DAM/IDM amount of the ended delivery day, not a 50% down payment. SKTT ve Serbest Tüketici 2026 rehberimizde is the consumer bill; this is market settlement.
| Collateral | Advance | |
|---|---|---|
| What | Lock / guarantee | Energy price (buy or sell) |
| When posted | 14:30 each business day | 14:30 on the business day after delivery |
| Cash move | None (stays locked) | Buy 15:00 / sell 17:00 |
| If short | Markets close at 17:00 and 11:00 | Default / cash risk |
Collateral operation and advance calendar: four business days
Monday’s session delivers Tuesday. If the old lock passes 12:30–13:00, the bid stands; 13:30/14:00 the match is final. 14:30 publishes the new required lock — you are not cut off yet; same-day 17:00 IDM and Tuesday 11:00 DAM+IDM use that figure. Letters by 16:30, cash/bonds by 17:00 at Takasbank. Tuesday the energy flows; cash still waits. Wednesday 14:30 the advance notice writes Tuesday’s delivery. Thursday 15:00 the buy is paid. GÖGİ still looks at the last k trade days; paying does not drop the lock at once.
| Day | Market | Collateral | Advance |
|---|---|---|---|
| Monday | Session; Tuesday delivery matches | 14:30 new lock; 17:00 IDM check | None (not this buy’s advance) |
| Tuesday | Delivery | 11:00 DAM+IDM check | None |
| Wednesday | — | That day’s 14:30 lock | 14:30 notice (Tuesday delivery) |
| Thursday | — | Lock stays | 15:00 buy cash leaves |
Collateral shortfall: what if the lock is not enough?
A match does not disconnect you at once. At 14:30 the shortfall is 3 million. The window is 17:00 the same day (IDM) and 11:00 the next business day. If you do not top up, they do not seize 3 million from elsewhere; the bid gate closes. The matched buy stands. That week you may need lock plus advance: one stays, one leaves. GÖGİ follows the 23 Oct 2025 method; k depends on the TKN band and holidays. The official number is the PYS/EPYS and DAM collateral balance.
You sold: when does the cash arrive?
The same delivery day can have buys and sells. Net advance is buy minus sell, but the two cash directions must stay visible. You pay buys at 15:00. EPİAŞ pays sales by 17:00 the same business day. The session is the day before delivery. A Sunday delivery (Saturday session) can shift to Tuesday 17:00 after a weekend. “I sold, so the lock vanished” is also wrong: the formula uses net-debt days; a receipt is not a release.
| Side | When was the trade? | When does cash move? |
|---|---|---|
| Buy | DAM session (delivery − 1 day) | Debtor pays by 15:00 |
| Sell | Same session / delivery | EPİAŞ pays by 17:00 |
What should the finance plan show in software?
- Today’s DAM session and the table’s delivery day must be labelled apart; a 14th session delivers on the 15th.
- Official required / available / shortfall should be visible before the 17:00 and 11:00 checks.
- The advance calendar should map delivery to 15:00 pay and 17:00 receive, with buy and sell in separate columns.
- The lock must not read as an invoice; the amount you must top up stays its own figure.
Finance plan on one screen
If the finance plan in Excel misses the 14:30 collateral figure, IDM closes. enerji tedarikçi yazılımı çözümümüzde DAM/IDM, the official collateral balance and the advance day sit on one panel. For a demo, browse similar portfolios on Referanslar sayfamızdan and book a slot iletişim formundan.