Free Consumer Limit 2026 and Turkey's Last Resort Tariff

In short: A free consumer (eligible consumer) is a person or company whose annual electricity consumption exceeds the limit set by EPDK, Turkey's Energy Market Regulatory Authority, and who may therefore choose their own supplier; the 2026 free consumer limit is 500 kWh (EPDK Board Decision No. 14039, Official Gazette 23.12.2025). The last resort supply tariff (SKTT) applies in 2026 to installations without a bilateral contract whose annual consumption exceeds 4,000 kWh for residential users and 15,000 kWh for most other groups; its energy charge is calculated as (PTF + YEKDEM) × coefficient.

What is a free consumer?

Under Electricity Market Law No. 6446, electricity supply in Turkey is open to competition between licensed supply companies. In EPDK's definition, individuals or legal entities whose annual consumption exceeds a value set by the Board each year have the right to choose their supplier; they are called free consumers. Being a free consumer is a right, not an obligation: a consumer who does not use it keeps buying energy from the incumbent (designated) supply company in their region at the regulated tariff.

A consumer who wants to use this right signs a bilateral agreement with a licensed supplier. A bilateral agreement is a freely negotiated commercial contract; unit price, term, pricing formula (fixed price, PTF-indexed price, PTF plus margin and so on) and exit terms are agreed between the parties. The distribution (grid) service stays with your regional distribution company even when the supplier changes; metering, fault and connection processes do not change.

Free consumer limit 2026: 500 kWh

EPDK Board Decision No. 14039 was published in the Official Gazette dated 23.12.2025, issue 33116, setting the 2026 free consumer limit at 500 kWh. The decision entered into force on 01.01.2026. In 2025 the limit was 750 kWh. Because the limit is reset every year, check the current value on the EPDK website before acting.

An annual threshold of 500 kWh is one that even a small shop exceeds within a few months. In practice, almost every commercial and industrial subscriber today has the right to become a free consumer. The real question is no longer "can I become a free consumer?" but "which supply model makes my cost more predictable?"

What is the last resort supply tariff (SKTT) and who falls under it?

The last resort supply tariff is the mechanism that limits high-consumption subscribers from continuing to buy energy from the designated supplier at the lower regulated tariff. An installation whose annual consumption exceeds the SKTT limit and which has no bilateral agreement is billed by the designated supply company at the SKTT. The 2026 limits were set by EPDK Board Decision No. 13912 dated 30.10.2025 and published in the Official Gazette of 31.10.2025 (in force from 01.01.2026):

The assessment is made on a calendar-year basis: designated suppliers consider the installation's consumption in the current and the previous calendar year. A 15,000 kWh threshold is low even for an average office, supermarket or small workshop; a mid-size factory or hotel passes it within the first weeks.

How is the SKTT price formed?

The energy component of the SKTT is not a fixed tariff; it changes every month with market prices. The basic formula is:

SKTT energy charge = (PTF + YEKDEM unit cost) × KBK

• PTF (Market Clearing Price): the hourly price formed in the day-ahead market operated by EPİAŞ, the Turkish energy exchange; the SKTT calculation uses the average for the relevant period.
• YEKDEM unit cost: the monthly unit cost of the Renewable Energy Resources Support Mechanism passed on to consumers.
• KBK (Board-Determined Coefficient): 1.05 for the residential group and 1.0938 for other groups in 2026. The energy charge therefore sits roughly 5% and 9.38% above the market cost.

Distribution charges, taxes and levies are added separately. The key point is this: the SKTT is a price that adds a margin on top of market cost and fluctuates every month. A business that stays on the SKTT carries both the risk of paying more than a bilateral agreement could achieve and month-to-month price uncertainty. Current PTF and YEKDEM values are published on the EPİAŞ Transparency Platform and SKTT decisions on the EPDK website; this article deliberately gives no lira values.

How to become a free consumer and switch supplier

1. Verify your consumption. The designated supplier's invoice shows current-year and previous-year consumption. You can also see your consumption values, meter reading dates and current supplier through the "EPİAŞ Electricity Free Consumer Information Query" service on e-Devlet (the Turkish e-government portal) or the EPİAŞ TYS portal.
2. List licensed suppliers. Companies with a supply licence appear in EPDK's licence query system; only contract with a licensed company.
3. Collect offers and sign the bilateral agreement. Compare the pricing model, term, early termination and tier conditions.
4. Start the supplier change. The new supplier forwards the supplier change form you signed to the designated supplier, which terminates your existing retail sales contract.
5. Follow the transition. Power is not cut because of a supplier change; the switch is completed within a few weeks after signing, depending on EPİAŞ's monthly registration calendar.

Why should large consumers sign a bilateral contract?

For a business above 15,000 kWh there are effectively two options: stay on the SKTT or sign a bilateral agreement. Advantages of a bilateral agreement:

• Escaping the coefficient margin: the KBK margin in the SKTT is fixed by regulation; in a bilateral agreement the margin is negotiable.
• Budget predictability: fixed-price or capped contracts reduce the impact of monthly PTF swings on the budget.
• Profile-based pricing: a site with heavy night-time consumption can document that profile and ask for a better offer.

Example: Consider a factory consuming 2.4 million kWh per year. That is 160 times the 15,000 kWh threshold. Without a bilateral agreement the installation falls under the SKTT and is billed every month at (average PTF + YEKDEM) × 1.0938. The same factory can present the hourly distribution of its consumption to suppliers, show its weight in hours when the PTF is low, and compare offers on the basis of that profile.

How consumption data and load profile help negotiate supply contracts

When suppliers price an offer they look not only at total annual kWh but at the hourly shape of consumption, because their own cost depends on the hourly PTF. Going to the negotiating table with the following data strengthens your position:

• Hourly load profile: at least 12 months of hourly consumption; seasonality and weekday/weekend differences.
• Time-band split: your day / peak / night (T1/T2/T3) shares. We cover this in detail in our multi-time tariff guide.
• Peak demand and base load: sites with a high, steady base load are easier for a supplier to price.
• Reconciliation with meter data: comparing main meter data with the distribution company's OSOS (automated meter reading system) record catches invoice deviations early. See how OSOS works in What is OSOS.

Common mistakes: signing a contract by looking only at the unit price, ignoring peak-hour concentration in a PTF-indexed contract, missing the contract end date and letting the installation fall onto the SKTT, and never comparing invoices with your own meter data.

Practical checklist

1. Verify current and previous-year consumption of each installation via e-Devlet / EPİAŞ.
2. List which installations exceed the SKTT threshold (4,000 kWh residential, 15,000 kWh other).
3. Identify installations with no bilateral agreement or an expired one.
4. Prepare at least 12 months of hourly load profile and your T1/T2/T3 split.
5. Get offers from several licensed suppliers based on the same profile.
6. Put contract end dates in the calendar; start renewal at least one month in advance.
7. Compare invoices with your own meter data every month.

How Argus EMS helps

Argus EMS reads main meters and energy analysers over Modbus TCP/RTU and M-Bus through the on-site Field Agent and sends the data to the server over TLS-encrypted MQTT. When the connection drops, data is buffered locally and sent once the connection returns, so the consumption series you use in negotiations has no gaps.

• Hourly, daily and monthly consumption dashboards show your load profile on one screen (main meter monitoring, electricity consumption tracking).
• The day / peak / night (T1/T2/T3) consumption breakdown forms the basis of the profile you present to suppliers.
• Month-end consumption and cost projection with budget tracking lets you follow the budget impact of the contract price (budget projection).
• Threshold e-mail alarms and reactive ratio tracking; monitoring multiple sites on one screen and data export for preparing your tender file.

Example use cases for multi-site manufacturers are on the energy monitoring for factories page.