Global Covenant of Mayors for Climate & Energy

What Global Covenant of Mayors for Climate & Energy does

The Global Covenant of Mayors for Climate & Energy (GCoM) is a nonprofit coalition of cities and local governments headquartered in Brussels, Belgium, founded in 2015 at COP21 through the merger of the Compact of Mayors and the EU Covenant of Mayors. As of 2026 it unites 14,080 signatory cities across 150 countries, representing 1.327 billion people and a projected collective emissions reduction of 24 GtCO2e by 2030 (4.5 GtCO2e cited in earlier reports). GCoM is co-chaired by Frans Timmermans and Mike Bloomberg and is fiscally sponsored by the European Climate Foundation. It does not charge membership fees; cities join free through Regional and National Covenants.

The organization operates three core programmatic initiatives — Data4Cities, Invest4Cities, and Innovate4Cities — supported by a Common Reporting Framework (CRF) with 50+ indicators across mitigation, adaptation, and a newly added Energy Access and Poverty Pillar (EAPP) launched at COP27. Its technology stack includes the Environmental Insights Explorer co-developed with Google (granular building, transport, and solar GHG estimates), the WRI Data Portal for Cities (community-scale activity data and emission factors), the City Climate Finance Gap Fund (early-stage technical assistance with World Bank and EIB), and the Urban Energy Access Toolkit developed with Arup. GCoM convenes annual Innovate4Cities conferences, produces aggregation and impact reports, and runs the Climate Talks podcast to disseminate research and city case studies.

GCoM is funded through institutional grants and partnerships rather than commercial revenue, with principal funders including the European Commission, Bloomberg Philanthropies, the Governments of Germany and Luxembourg, UN-Habitat, and multilateral lenders (World Bank, EIB, EBRD, AfDB, ADB). It reaches cities through more than 100 global partners spanning city networks (ICLEI, C40, UCLG, EUROCITIES, Climate Alliance, Energy Cities), national governments, and technology providers (Google, Arup, WRI). Member cities have disclosed over $179 billion in climate projects requiring investment across 2,500+ initiatives, and GCoM increasingly plays a finance-conduit role connecting subnational governments to climate finance facilities such as the Gap Fund, Green Climate Fund, and C40 Cities Finance Facility.

Name

Global Covenant of Mayors for Climate & Energy

Legal name

Global Covenant of Mayors for Climate & Energy

Website

https://globalcovenantofmayors.org

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

The Global Covenant of Mayors for Climate & Energy is a Brussels-based nonprofit coalition of 14,080 cities across 150 countries, founded in 2015, that drives subnational climate action through standardized reporting, climate finance mobilization, and innovation initiatives funded by institutional grants.

Ownership category

akta.pro rank

Product category

Climate Action Coalition Services

NAICS

Environment, Conservation and Wildlife Organizations (813312)

akta.pro primary industry

ESG/Sustainability Reporting & Disclosure Platforms (EUABAEAB)

akta.pro secondary industries

Climate & Emissions Data Management (Data Lake, Integration, APIs) (EUABAEAC), Climate Target-Setting, Transition Planning & Performance Management Platforms (EUABAEAF), GHG Accounting & Net-Zero/Decarbonization Planning (Scopes 1–3) (EUAHAJAC), Benchmarking, Ratings & Stakeholder Reporting Portals (Scorecards, Dashboards) (EUABAEAJ), Climate Policy, Governance & NDC Support (BPADALAA)

Keywords

• City climate action
• Climate reporting framework
• Urban climate finance
• Subnational climate governance
• City coalition services

Headquarters

HQ city

Brussels

HQ country

Belgium

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Membership and Signatory Support: Cities and local governments join GCoM through regional and national covenants with no direct revenue charged; the organization operates on grants and institutional partnerships.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

GCoM is a global coalition that supports cities and local governments in developing, implementing, and monitoring climate action plans through three core initiatives: Data4Cities (standardized measurement via the Common Reporting Framework), Invest4Cities (climate finance mobilization through the Gap Fund and Global Urbis), and Innovate4Cities (research and innovation). The organization offers free membership to cities, delivering technical assistance, knowledge sharing, capacity building, and access to a partner ecosystem spanning 100+ institutions across 150 countries.

Product overview

The Global Covenant of Mayors for Climate & Energy (GCoM) is a coalition/alliance platform rather than a single software product. It operates three core interconnected initiatives: Data4Cities (evidence-based measurement and management), Invest4Cities (climate finance mobilization), and Innovate4Cities (research and innovation). These initiatives are supported by the Common Reporting Framework (CRF) for standardized city reporting, the City Climate Finance Gap Fund for technical assistance, the Environmental Insights Explorer and WRI Data Portal as data tools, the Urban Energy Access Toolkit, the City Journey guidance framework, and the Climate Talks podcast series. Together, these offerings enable cities to measure climate ambition, access finance, and drive implementation from commitment through action delivery.

Differentiator

Problem solved

Functional benefit

Brands

• Innovate4Cities: GCoM's city-focused research and innovation initiative to identify cities' data, research, and technology priorities and equip them with the tools, investment, and partnerships needed to meet their full climate and sustainability ambition.
• Data4Cities
• Invest4Cities

Products and services

• Data4Cities GCoM's evidence-based foundational initiative to measure and manage cities and local governments' climate ambition and progress in a standard and consistent way, serving as the coalition's core data and reporting platform.
• Invest4Cities GCoM's initiative to increase the flow of public and private-sector investment in support of urban climate change mitigation and resilience projects, mobilizing finance for member cities.
• Innovate4Cities GCoM's city-focused research and innovation initiative to identify cities' data, research, and technology priorities and equip them with the tools, investment, and partnerships needed to meet their full climate and sustainability ambition.
• Common Reporting Framework (CRF) A harmonized reporting standard allowing signatory cities to quantify and compare their climate data consistently with national governments. Features 50+ indicators across three pillars: Mitigation, Adaptation, and Energy Access and Poverty.
• City Climate Finance Gap Fund A partnership between GCoM, the Governments of Germany and Luxembourg, World Bank Group, and European Investment Bank providing early-stage technical assistance to help cities in developing and emerging countries transition towards low-carbon and climate-resilient pathways.
• Global Urbis A partnership with European Commission, European Investment Bank (EIB), and European Bank for Reconstruction and Development (EBRD) providing financial advisory services and financing to foster low carbon and resilient investments in cities.
• Urban Energy Access Toolkit for Local Governments An 8-module toolkit developed in partnership with Arup to support local government staff in pursuing measurement and action along their energy access and poverty journeys.
• City Research and Innovation Agenda (CRIA) A research agenda inspired by the 2018 Edmonton Declaration that seeks to fill local-level knowledge, information, and technology gaps at every stage of the city climate action journey.
• Global Research and Action Agenda (GRAA) A research agenda drawing on presentations and discussions from the Innovate4Cities Conference, serving as a building block towards the IPCC's Seventh Assessment Report Cycle (AR7) Special Report on Cities and Climate Change.
• Innovate4Cities Conference A global conference convening science, innovation, policy, and practice to enable cities to take accelerated and more ambitious climate action. The 2024 edition was co-hosted with UN-Habitat in Montréal, Canada.
• Urban Transitions Mission Launched at COP26 under Mission Innovation, co-led by GCoM, European Commission DG RTD, and Joint Programming Initiative Urban Europe, to catalyze global action behind ambitious innovation goals for net-zero, climate resilient, and just cities.
• City Journey A step-by-step guide designed to support cities in bridging the gap from climate ambition to climate action delivery, covering the journey from commitment to monitoring and reporting.
• Aggregation Reports GCoM's annual Impact Reports that shed light on the collective influence of its signatories at the forefront of climate change action, providing aggregated climate data and impact metrics across the coalition.
• Climate Talks Podcast A podcast series produced by GCoM featuring discussions on cities, climate change science, and policy innovation with city leaders and climate experts.
• Energy Access and Poverty Pillar (EAPP) The third pillar of the Common Reporting Framework launched at COP27, providing indicators, guidelines, and timelines built to help signatories take action towards a just energy transition, covering more than 50 global and regional measurement indicators.

Quantifiable outcome

• 14,000+ cities committed to climate action representing 1.3 billion people
• +4 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

27 partnerships are on record, tiered key and core.

• UN-Habitat MoroccokeyImplementation/ SI/ Consulting Partner · 1 April 2026Co-organized Urban Mobility Capacity-Building Programme for Morocco with GCoM-Gap Fund Partnership.
• Mission InnovationcoreStrategic or Co-development Partner · 1 January 2021Co-leading Urban Transitions Mission launched at COP26; aims to catalyze global action behind ambitious innovation goals for net-zero, climate resilient cities.
• European CommissioncoreStrategic or Co-development PartnerKey institutional partner providing funding and co-leadership; co-leads Urban Transitions Mission with DG RTD; Joint Programming Initiative Urban Europe partnership.
• UN-HabitatcoreStrategic or Co-development PartnerCo-hosts Innovate4Cities Conference; partners on Urban Transitions Mission; collaboration on multilevel climate action initiatives.
• C40 CitiescoreStrategic or Co-development PartnerMajor city network partner; joint reports on market opportunities and multilevel governance; collaboration on CHAMP Coalition and Brazil Mutirão Program.
• World BankcoreImplementation/ SI/ Consulting PartnerImplements the City Climate Finance Gap Fund alongside EIB; provides technical assistance and financing for urban climate projects.
• Deutsche Gesellschaft für internationale Zusammenarbeit (GIZ)coreImplementation/ SI/ Consulting PartnerImplements Gap Fund activities; supports GCoM regional programs including GCoM Asia and African city initiatives.
• World Resources Institute (WRI)coreStrategic or Co-development PartnerPartnered to create Data Portal for Cities; jointly developed the Integrity Matters report; WRI Ross Center for Sustainable Cities collaboration.
• GooglecoreTechnology or IntegrationLaunched Environmental Insights Explorer providing Google data resources for city emissions measurement and planning.
• ArupcoreStrategic or Co-development PartnerDeveloped Urban Energy Access Toolkit and Unlocking Urban Energy Access and Poverty report together with GCoM.
• Joint Programming Initiative Urban Europe (JPI Urban Europe)coreStrategic or Co-development PartnerCo-leads Urban Transitions Mission with GCoM and European Commission DG RTD.
• International Coalition for Sustainable Infrastructure (ICSI)keyStrategic or Co-development PartnerGCoM is a founding organization; leads Coalition's action track on funding and financing; working to enable the Gap Fund.
• Covenant of Mayors in Sub-Saharan Africa (CoM SSA)coreChannel Partner/ Reseller/ DistributorRegional partner for Sub-Saharan Africa; long-standing presence and trusted relationships with African municipalities; co-organizes events and technical support.
• ICLEI - Local Governments for SustainabilitycoreChannel Partner/ Reseller/ DistributorGlobal city network partner; co-organizes Regional Climate Action Forums; ICLEI Africa collaborates on African city events.
• ICLEIcoreChannel Partner/ Reseller/ DistributorGlobal city network partner listed among key partners supporting GCoM cities.
• United Cities and Local Governments (UCLG)coreChannel Partner/ Reseller/ DistributorGlobal city network partner; UCLG-ASPAC collaborates on business matchmaking events.
• EUROCITIESkeyChannel Partner/ Reseller/ DistributorEuropean city network partner supporting GCoM's European activities.
• Climate AlliancekeyChannel Partner/ Reseller/ DistributorEuropean city network partner supporting GCoM's climate action mission.
• Energy CitieskeyChannel Partner/ Reseller/ DistributorEuropean city network partner supporting GCoM's energy and climate initiatives.
• Council of European Municipalities and Regions (CCRE)keyChannel Partner/ Reseller/ DistributorEuropean municipal network partner supporting GCoM activities.
• EU Committee of RegionskeyChannel Partner/ Reseller/ DistributorEU institutional partner supporting multilevel governance for climate action.
• European Federation of Agencies and Regions for Energy and the Environment (FEDARENE)keyChannel Partner/ Reseller/ DistributorEuropean network supporting GCoM's energy and environment initiatives.
• South African Local Government Association (SALGA)keyChannel Partner/ Reseller/ DistributorCo-organized Regional Climate Action Forum in Cape Town with GCoM.
• GIZ GhanakeyImplementation/ SI/ Consulting PartnerCoM SSA's implementing partner in Ghana; supported Accra biodigester project development.
• Directorate General of Local Authorities (DGCT) MoroccokeyImplementation/ SI/ Consulting PartnerGovernment partner for Moroccan urban mobility capacity-building program.
• Mohammed VI Polytechnic University (UMP6)keyStrategic or Co-development PartnerAcademic partner for Moroccan urban mobility program.
• National Centre for Climate Change Strategy and International Cooperation (NCSC) ChinakeyStrategic or Co-development PartnerGovernment partner for Chinese climate resilience workshops.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• ICLEI – Local Governments for Sustainability: A global city network focused on sustainable urban development, with overlapping membership, parallel reporting frameworks (GreenClimateCities), and formal GCoM channel-partner relationship. Direct competitor and cooperator for city climate engagement.
• C40 Cities Climate Leadership Group: A global network of megacities committed to climate action, operating parallel reporting and climate action planning tools while serving as a GCoM channel partner. Targets a more exclusive, large-city segment of the same market GCoM serves at scale.
• CDP (Carbon Disclosure Project): Operates the CDP-ICLEI Unified Reporting System for city-level climate disclosure, directly competing with GCoM's Common Reporting Framework as the global standard for city climate data, while also serving cities and local governments.
• Under2 Coalition: A coalition of subnational governments (states, regions, cities) committed to deep decarbonization, jointly referenced with GCoM as the combined force behind 13,700 cities and regions actively delivering climate strategies.
• Resilient Cities Network: A city-focused network (formerly 100 Resilient Cities) helping member cities build urban resilience strategies, with overlapping target market and complementary offerings to GCoM's adaptation pillar.
• United Cities and Local Governments (UCLG): A global city network representing local governments across all sustainable development areas (not just climate); serves as a GCoM channel partner and competes for the same city's policy attention and engagement bandwidth.

Broad incumbents

• World Resources Institute (WRI) – Ross Center for Sustainable Cities: Co-developed the Data Portal for Cities and Integrity Matters reports with GCoM; a broader sustainability research institution with overlapping city climate data, research, and policy work that intersects significantly with GCoM's portfolio.
• GHG Protocol: Sets the global accounting standards for organizational and city-level GHG inventories that underpin frameworks like GCoM's CRF; a critical upstream standard-setter whose methodologies shape GCoM's measurement approach.

Emerging players

• Climate Bonds Initiative: Focused on mobilizing climate finance through green bonds and standards; addresses adjacent parts of the urban climate finance pipeline that GCoM's Invest4Cities initiative and Gap Fund aim to unlock.

Others

• Global Covenant of Mayors for Climate & Energy – Compact of States and Regions: Companion initiative explicitly merged into the broader GCoM alliance; historically tracked subnational government (states/regions) climate commitments, providing a point of reference for how GCoM integrated state-level reporting into its framework.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/Mayors4Climate
• YouTubeyoutube.com/channel/UC62CxTQsfYU9yxvapvqyGKQ
• Facebookfacebook.com/Mayors4Climate
• Instagraminstagram.com/mayors4climate/?igshid=1j1wml9hjcnzn
• LinkedInlinkedin.com/company/global-covenant-of-mayors-for-climate-energy-gcom

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Global Covenant of Mayors for Climate & Energy