Why it matters
As renewable capacity grows in Turkey's electricity market, YEKDEM has become an integral part of supply cost. For free consumer and SKTT subscribers, monthly YEKDEM announcement directly affects unit price; without projection during bilateral agreement renewal, budget variance occurs. Monthly YEKDEM tracking is now standard operation in consumption management — especially in multi-site portfolios, YEKDEM impact differs by facility. Storage GES and integrated unit regulations also affect YEKDEM price categories. As the second term in the SKTT formula (PTF + YEKDEM) × KBK, YEKDEM revisions concern all market-cost subscribers.
Impact on the bill
Every kWh supplied in the free market or under Last Resort Supply Tariff (SKTT) appears as a YEKDEM line item on the invoice. Since SKTT formula is (PTF + YEKDEM) × KBK, YEKDEM increases directly raise SKTT invoices. In bilateral supply, YEKDEM component is also added to active energy charge; monthly EPİAŞ announcement should be checked in invoice reconciliation. YEKDEM revisions should be considered in supply contract renewal and budget planning. In invoice verification, YEKDEM unit charge is cross-checked against the announced period value; deviation detection enables early intervention.
How ENOPTIMAL tracks it
The ENOPTIMAL supply management module combines monthly YEKDEM announcements with invoice reconciliation and portfolio cost analysis. Multi-site YEKDEM and PTF impact ranking is available in the free consumer portfolio. On the consumption management side, OSOS hourly profile helps model facility-level cost impact of YEKDEM fluctuation. In the electricity invoice tracking module, PTF, YEKDEM, distribution charge, and reactive items are separated for unit price control. Monthly YEKDEM projection before bilateral agreement renewal prevents budget variance.