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The basis of information
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Technical guides refer to manufacturer documentation and relevant official regulations.

Heating cost allocation

Cost allocation regulation for central heating and domestic hot water systems

Meter inspection

Heat Meter Inspection Regulation

Tiered natural gas pricing

BOTAŞ — Implementation rules for residential consumers

Manufacturer and technical documentation

Danfoss — Radiator thermostats

M-Bus — Wired communication fundamentals

Content scope

These guides provide general information. Conditions may vary by model, building, contract and date. General guidance does not replace a project-specific technical assessment or an official decision.

For research into the content structure, Referans Enerji’s guide topics were reviewed during research. The explanations on this site were written for Ural Mühendislik.

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IMPORTANT INFORMATION

Information on Tiered Natural Gas Pricing and Heat Cost Allocation

Following BOTAŞ’s announcement dated 3 April 2026, within the framework of the Energy Market Regulatory Authority (EPDK) and BOTAŞ regulations, tiered pricing for residential consumers took effect on 4 April 2026.

Under this scheme, the government subsidy varies by consumption tier, increasing the price paid per cubic metre. Depending on the region and consumption level, the difference in unit costs between Tier 1 and Tier 2 ranges from 60% to 80%.

Although total natural gas bills issued to buildings have increased, no changes have been made to the Regulation on the Allocation of Heating and Domestic Hot Water Costs in Central Heating and Hot Water Systems. Accordingly, costs continue to be calculated and allocated using individual unit meter readings and the building’s current natural gas invoice amount.

SOURCES

BOTAŞ Monthly Tier Consumption Limitsbotas.gov.tr · PDFHeat Cost Allocation Regulationmevzuat.gov.tr
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