Türkiye''s Energy Market Regulatory Authority (EPDK) announced — through decisions 14671, 14676, 14677, 14678, 14679 and 14681 dated 18 June 2026 — that no upper cap will apply in 2026 to the surplus-energy sales of unlicensed generation plants whose Renewable Energy Support Mechanism (YEKDEM) support window has exceeded 10 years. The ruling was published in the Official Gazette on 20 June 2026.
What the ruling says
Unlicensed generation plants whose generation and consumption metering points sit at different locations can sell 100% of their surplus output to the last-resort supplier across calendar year 2026. EPDK''s earlier 12 June 2026 decision had introduced an "upper cap to be set by the Authority"; the 18 June ruling effectively zeroes that cap for 2026.
Why it matters to investors
Plants in the so-called Unlicensed Producer-2 status — those that have completed the 10-year YEKDEM support window — had been facing uncertainty over the new distribution fee and sales tariff. Lifting the 2026 cap means:
- All net surplus after hourly settlement can be converted into cash revenue.
- 2026 cash-flow models can be rebuilt against the unit price paid by the last-resort supplier.
- 2027 scenarios should still carry the assumption that EPDK may reinstate an upper cap.
Scope: who is affected?
The decision applies only to unlicensed plants with separate generation and consumption metering points. Residential rooftop systems where generation and consumption share the same metering point are not directly covered. Plants that have not yet completed the 10-year YEKDEM support window continue to operate under the existing netting and supply rules.
Tracking it in SmartPlain
The SmartPlain settlement engine (PTF + YEKDEM × KBK formula) flags Unlicensed Producer-2 status at the plant level and reports the hourly breakdown of surplus energy sold to the last-resort supplier. The EPDK decision calendar module notifies you the day any new 2027 cap is published, so you can compare revenue impact across your portfolio on a scenario basis.
Frequently asked questions
Why was the cap zeroed for 2026?
The 12 June 2026 decision established the principle that EPDK would set an upper cap for plants past 10 years of support. The 18 June decision chose not to apply that cap in 2026 — effectively zeroing it — so existing investors get a transition window within the calendar year.
Does it affect plants under 10 years?
No. The ruling targets only plants in Unlicensed Producer-2 status — those past the YEKDEM support window. Younger plants continue with the existing netting and surplus-sale rules.
What happens in 2027?
Unless EPDK issues a separate decision for 2027, the upper-cap mechanism introduced on 12 June 2026 may come back into effect. Investors should keep a "capped sales" assumption in their 2027 cash-flow scenarios.