From Local Action to Global Impact: Elevating Subnational Governments in the G20 Climate Agenda

The policy brief highlights the critical role of local governments in Africa and the Global South as implementers of climate adaptation, mitigation, and biodiversity goals. It identifies systemic barriers—including severe finance gaps, technical capacity constraints, and data deficiencies—that hinder municipal action. The authors recommend that South Africa's 2025 G20 presidency establish a multi-level climate governance declaration, a dedicated local climate action forum, and a specialized finance access facility to empower subnational governments as equal partners in global climate governance.

• Local governments serve as essential innovation hubs and implementers for climate resilience, as seen in Cape Town's water security measures during the 2015–2018 drought and Freetown's use of a 'chief heat officer' and anticipatory land-use planning to reduce flood risks.
• Municipalities are driving low-carbon transitions through renewable energy projects, such as the Kouga Local Municipality's wind energy partnerships and Cape Town's target to source 35% of its electricity from renewables by 2030.
• Subnational governments are critical for biodiversity and waste management, exemplified by Durban's Biodiversity Stewardship Programme and Johannesburg's mandatory separation-at-source programme for recycling.
• There is a severe climate finance gap in Africa; current annual flows meet only 23% of estimated needs, with adaptation and mitigation needs specifically met at 20% and 18% respectively in 2021/22.
• Local governments face systemic capacity barriers, including a lack of technical expertise for risk assessments, high staff turnover, and fragmented data that weakens the business case for investment.
• The authors propose four specific policy recommendations for the G20 Environment and Climate Sustainability Working Group (ECSWG): a multi-level climate governance declaration, a local climate action forum, a climate finance access facility for cities, and an urban resilience and nature-positive infrastructure initiative.

APA

SPIRES, M., COETZEE, I., STRACHAN, K., CHEVALLIER, R., TSHIKALANKE, R., MAREMA, D., & KIKI, D. (2025). From Local Action to Global Impact: Elevating Subnational Governments in the G20 Climate Agenda. South African Institute of International Affairs. https://saiia.org.za/wp-content/uploads/2025/09/SAIIA_PN_18_Spires-et-al.-G20LocalActiontoGlobalImpact-4.pdf

Chicago

SPIRES, MEGGAN, INGRID COETZEE, KATE STRACHAN, ROMY CHEVALLIER, RABELANI TSHIKALANKE, DORAH MAREMA, and DORAH KIKI. From Local Action to Global Impact: Elevating Subnational Governments in the G20 Climate Agenda. South African Institute of International Affairs, 2025. https://saiia.org.za/wp-content/uploads/2025/09/SAIIA_PN_18_Spires-et-al.-G20LocalActiontoGlobalImpact-4.pdf.

Wikipedia

{{cite report |last1=SPIRES |first1=MEGGAN |last2=COETZEE |first2=INGRID |last3=STRACHAN |first3=KATE |last4=CHEVALLIER |first4=ROMY |last5=TSHIKALANKE |first5=RABELANI |last6=MAREMA |first6=DORAH |last7=KIKI |first7=DORAH |title=From Local Action to Global Impact: Elevating Subnational Governments in the G20 Climate Agenda |publisher=South African Institute of International Affairs |date=18 September 2025 |url=https://saiia.org.za/wp-content/uploads/2025/09/SAIIA_PN_18_Spires-et-al.-G20LocalActiontoGlobalImpact-4.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{spires2025from, author = {SPIRES, MEGGAN and COETZEE, INGRID and STRACHAN, KATE and CHEVALLIER, ROMY and TSHIKALANKE, RABELANI and MAREMA, DORAH and KIKI, DORAH}, title = {{From Local Action to Global Impact: Elevating Subnational Governments in the G20 Climate Agenda}}, institution = {South African Institute of International Affairs}, year = {2025}, month = sep, url = {https://saiia.org.za/wp-content/uploads/2025/09/SAIIA_PN_18_Spires-et-al.-G20LocalActiontoGlobalImpact-4.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }