Estimating international mitigation finance needs: A top-down perspective

This discussion brief by the Stockholm Environment Institute reviews global studies to estimate the international finance required for climate change mitigation, specifically for a warming trajectory of no more than 2°C. It distinguishes between various metrics—such as total, incremental, and net climate-relevant investment—and highlights a significant gap between current funding and the needs of developing (non-OECD) countries.

• There is a wide disparity in estimates for incremental investment needs across different studies. For energy efficiency alone, annual incremental needs are estimated to range from US$1 billion to US$641 billion for the period 2010–2029.
• The brief identifies a significant gap between current annual climate-specific mitigation investment and projected needs. Current annual investment is estimated at approximately US$435 billion, while projected average annual needs range from US$448 billion to US$1,195 billion.
• Non-OECD countries are expected to require the majority of global climate-specific investments through 2035. This includes 60% of energy efficiency investments and 55% of low-carbon power and biofuels investments.
• Net climate-relevant investment—which subtracts avoided fossil fuel infrastructure from climate-specific finance—is consistently lower than climate-specific investment alone. In some scenarios, avoided fossil fuel investments actually exceed the needs for climate-specific investment.
• Estimating energy efficiency investments is particularly challenging due to a lack of standardized tracking and varying definitions regarding what portion of a product's cost constitutes an 'efficiency' investment.

APA

Stockholm Environment Institute (2014). Estimating international mitigation finance needs: A top-down perspective. https://www.sei.org/mediamanager/documents/Publications/Climate/SEI-2014-DB-Climate-mitigation-finance-estimates.pdf

Chicago

Stockholm Environment Institute. Estimating international mitigation finance needs: A top-down perspective. 2014. https://www.sei.org/mediamanager/documents/Publications/Climate/SEI-2014-DB-Climate-mitigation-finance-estimates.pdf.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=Estimating international mitigation finance needs: A top-down perspective |date=2014 |url=https://www.sei.org/mediamanager/documents/Publications/Climate/SEI-2014-DB-Climate-mitigation-finance-estimates.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitute2014estimating, author = {{Stockholm Environment Institute}}, title = {{Estimating international mitigation finance needs: A top-down perspective}}, institution = {Stockholm Environment Institute}, year = {2014}, url = {https://www.sei.org/mediamanager/documents/Publications/Climate/SEI-2014-DB-Climate-mitigation-finance-estimates.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }