PROJECT PROFILE · CERTIFICATE-BASED CLIMATE PROTECTION
At the Odayeri and Kömürcüoda landfills, landfill gas is captured via wells and pipes. It is predominantly used in gas engines; excess gas is flared under controlled conditions. This page separates the technical activity, the methodologically calculated emission reduction, and the subsequent allocation of certificates.
GAS USE · SYMBOLIC IMAGE
Note: The image shows a biogas plant as a symbolic technical illustration. It does not originate from the project sites of Odayeri or Kömürcüoda, does not show a landfill gas plant, and does not prove the impact of the described project. Photo: Vladimir Srajber / Pexels.
COUNTRY
Turkey
GOLD STANDARD ID
GS707
TECHNOLOGY
50,787 MW of landfill gas electricity
STATUS IN REGISTER
Gold Standard Certified Project
WHY THE GAS SOCKET MATTERS
It is not the waste itself that contributes to climate protection, but the methane that is prevented from escaping.
Landfill sites produce methane-containing gas when organic waste decomposes. Without capture, some of this would escape into the atmosphere.
The project collects the gas, measures its quantity and composition, and feeds it into gas engines or a closed flare. The climate impact is not read directly from an individual well as a tonnage value: it is calculated from the monitoring data in accordance with ACM0001 and independently verified.
CONTENT
01 · Project profile
01 · PROJECT AT A GLANCE
The Gold Standard entry combines two landfill sites as one large-scale project. Technical capacity, annual estimate, as well as issued and retired units are shown separately.
Landfill Gas Extraction and Electricity Generation Project – Istanbul, Turkey
LOCATIONS
Odayeri, European side of Istanbul · Kömürcüoda, Asian side of Istanbul
GOLD STANDARD ID
GS707 · Register detail 1154
PROJECT DEVELOPERS IN THE REGISTER
Yeşil Global Enerji A.Ş.
PROJECT SCALE
Large Scale
TECHNICAL APPROACH
Gas wells and pipelines · Measurement · 38 gas engines with generators · Enclosed flare for excess gas
INSTALLED CAPACITY
Odayeri 33.807 MW · Kömürcüoda 16.980 MW · combined 50.787 MW
START OF POWER GENERATION
Odayeri 30/12/2008 · Kömürcüoda 16/07/2009
PROJECT STANDARD AND METHODOLOGY
Gold Standard for the Global Goals · ACM0001 "Flaring or use of landfill gas" · Period 1 Version 10 · Period 2 Version 18
CREDITING PERIODS
21/08/2010–20/08/2017 · 20/11/2017–19/11/2024
ESTIMATION, ABANDONMENT AND DECOMMISSIONING
818,841 t CO₂e annual estimated credits · 10,886,298 VERs issued · 7,526,431 VERs retired · latest displayed issuance 02/04/2026 for vintages 2022, 2023, and 2024
Why estimation, issuance and retirement are not the same thing: 818,841 t CO₂e is the annual expected value stated in the registry. Issued VERs are based on verified monitoring periods. Only a retirement takes specific serial numbers out of circulation and can document a specific use.
02 · WHAT THE PROJECT PROVIDES FOR
Capture gas, oxidise methane, utilise energy
The effect depends not only on the construction of the plants, but on the continuous operation of the gas collection system, the combustion and the monitoring at both locations.
01
Capture landfill gas
Gas wells and a pipe network collect the landfill gas generated during decomposition, instead of allowing it to escape uncontrollably over the landfill surface.
02
Use it or lose it
Gas engines burn the gas and drive generators. Excess gas is oxidised in a controlled manner in an enclosed flare.
03
Document operations
The gas quantity, gas composition, calorific value, engine and flare operation, as well as electricity quantities form the data basis for the subsequent calculation and audit.
03 · HOW A UNIT IS CREATED
Measured values are converted into a methodically calculated emission reduction.
ACM0001 describes how the use or controlled flaring of landfill gas is accounted for against a baseline without gas capture.
01
Set baseline
The reference scenario describes the deposition and decomposition of the waste without capture and destruction of the resulting landfill gas.
02
Measure gas and operation
Recorded gas volume, methane content, operating states and other parameters are assigned to the respective monitoring period.
03
Calculate methane destruction
Controlled combustion in engines or flares is methodically accounted for against the baseline. Grid feed-in can provide an additional calculated effect.
04
Verify and issue
Following independent verification, VERs with vintages and serial numbers can be issued in the registry. Subsequent retirement documents their use.
04 · DOCUMENTED ADDITIONAL CONTRIBUTIONS
The register entry cites three SDG references
In the Gold Standard registry, SDGs 7, 8 and 13 are identified as certified impact claims. The specific significance depends on the documented indicators and monitoring periods.
SDG 13 · CLIMATE ACTION
Preventing methane emissions
The core mechanism is the volume of methane captured and oxidised in a controlled manner. The emission reduction applies to the respective verified monitoring and crediting framework.
SDG 7 · ENERGY
utilise landfill gas for energy
A portion of the captured gas is used in gas engines to generate electricity and is fed into the power system as an additional source of energy.
SDG 8 · WORK
Operations and technical employment
Plant operation, maintenance, measurement and documentation require qualified activities. The specific project indicators remain decisive, not a general impact on the workplace.
WASTE AND URBAN INFRASTRUCTURE
A relevant context, not a register predicate
The gas collection system is part of the technical landfill infrastructure in a metropolis. However, the current registry entry does not show any additionally certified SDG 11 or 12 from this.
ON SDG COMMUNICATION
A designated SDG reference is not a general seal of sustainability. It merely shows which additional areas of impact are documented in the standard framework; it does not make either the project or a supporting company sustainable as a whole.
05 · FOR SUPPORTING COMPANIES
Issued VERs are not yet an allocation to a company.
A reliable allocation includes at least:
01
Project name and Gold Standard ID GS707
02
specific quantity in t CO₂e
03
Vintage or monitoring period
04
Decommissioning date and register reference
05
full serial number range
06
Beneficiary and documented purpose of use
06 · CLASSIFICATION AND COMMUNICATION
What the support means – and what it doesn't
A voluntary climate contribution is presented separately from reductions within one's own value chain.
IT DOCUMENTS
IT DOES NOT AUTOMATICALLY MEAN
Gas extraction, gas engines and flare operation at two landfill sites
that all landfill gas generated is fully captured at all times
a Gold Standard-certified project with issued VERs
automatically an Article 6 authorisation, a CCP label or an external rating
the use of landfill gas for electricity generation
a complete environmental assessment of the landfill site, waste streams, and electricity generation
the links to SDGs 7, 8 and 13 shown in the registry
a comprehensive sustainability status for the project or supporter
the retirement of specific CERs for a beneficiary
a reduction of own emissions, climate neutrality, or a green product label
07 · SOURCES AND RELEVANCE
The basis openly accessible
Status, expenditures and decommissionings are subject to change. The current register entry and the published project documents remain authoritative.
PRIMARY SOURCE
Gold Standard Impact Registry
GS707 · Status, Project Data, Expenditure, and Decommissions
STANDARD DOCUMENTS
Gold Standard for the Global Goals
Principles, requirements, methods and templates
METHODOLOGY
ACM0001
Flaring or use of landfill gas
NATUREOFFICE
Documentation Framework
General rules for voluntary climate contributions
TEST BENCH
5 September 2026
We are happy to answer any specific questions regarding project allocation, vintage, or available documentation.