Systems in depth
One section per system: its state at evidence close, its exposures and what the operational series will watch.
Contents
8.1Common causes
One cause can strike many budgets at once: a hazard, an energy shock, a rate move. The shared cause matters more than the line item.
| Instance | Mechanism in action | Evidence | Status |
|---|---|---|---|
| Natural hazards | storms, floods and wildfire drive large annual losses | 34 | Reported |
| Energy security | security concerns shape investment priorities in 2026 | 1 | Reported |
| Ageing assets | a USD 3.6 trillion ten-year gap in one national report card | 2 | Reported |
| Disaster cost studies | full-scope disaster cost estimates exist and were not read here | 23 | Inferred |
Pathways in this mechanism
- CLI → INF hazards
- ENE → FIN energy security
- INF → FIN ageing assets
Evidence to bind in 2027
- common cause tagging of budget lines
- frequency of concurrent causes
Related editions
- GLB Global Systems
- SR-02 Critical Infrastructure and Lifeline Systems
- SR-05 Sovereign, Fiscal and Financial Resilience
- SR-06 Insurance, Protection Gaps and Insurability
- GS-05 Finance and Economy
- GS-08 Disaster and Resilience
8.2Domino effects
A shortfall in one flow removes an input from the next. Uninsured losses reach budgets, and budgets reach upkeep and adaptation.
| Instance | Mechanism in action | Evidence | Status |
|---|---|---|---|
| Loss to budget | uninsured losses fall on households and public budgets | 4 | Reported |
| Budget to upkeep | repair claims compete with planned upkeep | 2 | Inferred |
| Pledge to payment | about half of fund pledges had been received | 8 | Reported |
| Adaptation to assets | delayed adaptation leaves assets exposed | 67 | Inferred |
Pathways in this mechanism
- CLI → INF → FIN
- FIN → DEV
- DEV → INF
Evidence to bind in 2027
- timing of budget shifts after loss years
- upkeep spending data
Related editions
- GLB Global Systems
- SR-02 Critical Infrastructure and Lifeline Systems
- SR-05 Sovereign, Fiscal and Financial Resilience
- SR-06 Insurance, Protection Gaps and Insurability
- GS-05 Finance and Economy
- GS-08 Disaster and Resilience
8.3Inter-systemic feedbacks
Investment also depends on what it protects. Losses reprice cover, cover shapes budgets, and budgets shape the next loss.
| Instance | Mechanism in action | Evidence | Status |
|---|---|---|---|
| Loss to price | large loss years reprice cover | 35 | Inferred |
| Risk transfer | cat bond market grew to a record size | 5 | Reported |
| Prearranged finance | shared funds link payouts to shocks | 27 | Reported |
| Fiscal feedback | climate risk raises federal fiscal exposure | 12 | Reported |
Pathways in this mechanism
- CLI → FIN
- FIN → FIN risk transfer
- FIN → INF
Evidence to bind in 2027
- public cover data
- payout speed
Related editions
- GLB Global Systems
- SR-02 Critical Infrastructure and Lifeline Systems
- SR-05 Sovereign, Fiscal and Financial Resilience
- SR-06 Insurance, Protection Gaps and Insurability
- GS-05 Finance and Economy
- GS-08 Disaster and Resilience
8.4Shared vulnerabilities
Different portfolios share the same weak points: deferred upkeep, debt-heavy adaptation finance, slow recovery money and thin data.
| Instance | Mechanism in action | Evidence | Status |
|---|---|---|---|
| Deferred upkeep | energy D+ and dams D+ in the US report card | 2 | Reported |
| Debt-heavy flows | debt makes up much of public adaptation finance | 35 | Inferred |
| Thin data | portfolios are not published on a common basis | 161915 | Reported |
| Governance | fund governance and review cycles differ by country | 1740 | Reported |
Pathways in this mechanism
- INF → FIN deferred upkeep
- FIN → DEV debt-heavy flows
- DAT → FIN thin data
Evidence to bind in 2027
- debt share of adaptation finance from the primary report
- upkeep share by country
Related editions
- GLB Global Systems
- SR-02 Critical Infrastructure and Lifeline Systems
- SR-05 Sovereign, Fiscal and Financial Resilience
- SR-06 Insurance, Protection Gaps and Insurability
- GS-05 Finance and Economy
- GS-08 Disaster and Resilience
8.5Thresholds and tipping
A system can absorb stress until a threshold is crossed. Fiscal space, payment speed and cover availability are such thresholds for resilience investment.
| Instance | Mechanism in action | Evidence | Status |
|---|---|---|---|
| Payment speed | about half of pledges received at September 2025 | 8 | Reported |
| Liquidity | IMF resilience facility has 27 arrangements and spare capacity | 910 | Reported |
| Finance goals | goals set for 2035 exceed current flows | 67 | Reported |
| Tipping in budgets | repeated loss years can crowd out upkeep | 23 | Inferred |
Pathways in this mechanism
- FIN → FIN payment thresholds
- FIN → DEV finance goals
- CLI → FIN repeated losses
Evidence to bind in 2027
- fiscal space thresholds by country
- cover availability thresholds
Related editions
- GLB Global Systems
- SR-02 Critical Infrastructure and Lifeline Systems
- SR-05 Sovereign, Fiscal and Financial Resilience
- SR-06 Insurance, Protection Gaps and Insurability
- GS-05 Finance and Economy
- GS-08 Disaster and Resilience
Notes
Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references
- 3Munich Re (ed.), Natural disaster figures for 2025 (media information, 2026; overall losses about USD 224 billion; insured losses about USD 108 billion; weather events 92% of overall losses; Los Angeles wildfires about USD 53 billion overall). Munich Re, Munich. Observation year 2025. Accessed 2026-11-03.back
- 1IEA (ed.), World Energy Investment 2026, launch presentation (11 pages, Paris, 28 May 2026; global energy investment USD 3.4 trillion in 2026 estimate against USD 2.6 trillion in 2015; electricity supply and infrastructure USD 1.6 trillion). International Energy Agency, Paris. Observation year 2026. Accessed 2026-11-03.back
- 4Artemis (ed.), report on the Swiss Re Institute sigma 1/2026 natural catastrophe figures for 2025 (insured losses USD 107 billion; overall losses USD 220 billion; about 49% insured; 92% of insured losses from secondary perils; 80 to 90% of losses typically uninsured in emerging economies). Read in this trade report, not in the sigma itself. Artemis, Bermuda. Observation year 2025. Accessed 2026-11-03.back
- 2ASCE (ed.), 2025 Report Card for America’s Infrastructure (overall grade C; ten-year investment gap USD 3.6 trillion; energy D+, drinking water C−, dams D+). American Society of Civil Engineers, Reston. Observation year 2025. Accessed 2026-11-03.back
- 23UNVERIFIED, not opened: UNDRR (ed.), Global Assessment Report on Disaster Risk Reduction 2025: Resilience Pays, taken from search-result summaries; the report pages returned access errors; no figure used in the findings. United Nations Office for Disaster Risk Reduction, Geneva. Observation year 2025. Accessed 2026-11-03.back
- 8UNFCCC (ed.), Report of the Board of the Fund for responding to Loss and Damage, addendum FCCC/CP/2025/10/Add.1, 10 November 2025 (pledges USD 790.24 million and amount received USD 397.74 million at 23 September 2025; 27 contributors). United Nations Framework Convention on Climate Change, Bonn. Observation year 2025. Accessed 2026-11-03.back
- 6Climate Policy Initiative (ed.), Global Landscape of Climate Finance 2025 (publication page, 23 June 2025; global climate finance USD 1.9 trillion in 2023; adaptation finance USD 65 billion, likely an underestimate; international flows to emerging and developing economies USD 196 billion, 78% public). Climate Policy Initiative, London. Observation year 2023. Accessed 2026-11-03.back
- 7UNFCCC (ed.), New collective quantified goal on climate finance, decision text FCCC/PA/CMA/2024/L.22, 24 November 2024 (at least USD 300 billion a year by 2035; call for USD 1.3 trillion a year from all sources; adaptation finance needs USD 215 to 387 billion a year to 2030). United Nations Framework Convention on Climate Change, Bonn. Observation year 2024. Accessed 2026-11-03.back
- 5Artemis (ed.), Catastrophe bond market records that were broken in 2025 (issuance about USD 25.6 billion; outstanding market just over USD 61.3 billion; 122 new 144A and private deals). Artemis, Bermuda. Observation year 2025. Accessed 2026-11-03.back
- 27UNVERIFIED, not opened: Global Shield against Climate Risks, funding and payout reports, taken from search-result summaries; no figure used in the copy. Global Shield secretariat. Observation year 2025. Accessed 2026-11-03.back
- 12GAO (ed.), High-Risk List 2025 (38 areas; includes limiting the federal fiscal exposure by better managing climate change risks). US Government Accountability Office, Washington. Observation year 2025. Accessed 2026-11-03.back
- 35UNVERIFIED, not opened: UNEP (ed.), Adaptation Gap Report 2025: Running on Empty, taken from search-result summaries (needs USD 310 to 365 billion a year by 2035; international public adaptation finance USD 26 billion in 2023; 59% as debt); the report pages returned access errors. United Nations Environment Programme, Nairobi. Observation year 2025. Accessed 2026-11-03.back
- 16Tribune India (ed.), Japan approves 20 trillion yen plan for disaster resilient infrastructure (press agency report of 7 June 2025; more than 20 trillion yen over fiscal 2026 to 2030). Tribune India, Chandigarh. Observation year 2025. Accessed 2026-11-03.back
- 19NSW Government (ed.), Disaster Ready Fund (page on the Commonwealth programme; AUD 1 billion nationally over five years from 1 July 2023 to 30 June 2028). New South Wales Government, Sydney. Observation year 2023. Accessed 2026-11-03.back
- 15Noerr (ed.), Bundestag approves exemption from the debt brake for defence spending and special funds for investments in infrastructure and climate protection (law-firm note; Bundestag vote 18 March 2025, Bundesrat 21 March 2025; EUR 100 billion for the Climate and Transformation Fund and EUR 100 billion for the states; twelve-year term). Noerr, Berlin. Observation year 2025. Accessed 2026-11-03.back
- 17Cabinet Secretariat of Japan (ed.), Fundamental Plan for National Resilience (English page; the plan is reviewed about every five years; no five-year amount on the page read). Cabinet Secretariat, Tokyo. Observation year 2023. Accessed 2026-11-03.back
- 40UNVERIFIED, not opened: OECD (ed.), Good Governance for Critical Infrastructure Resilience. OECD Publishing, Paris, 2019, cited from memory. Observation year 2019. Accessed 2026-11-03.back
- 9IMF (ed.), 2026 Update of Resource Adequacy of the Poverty Reduction and Growth Trust, Resilience and Sustainability Trust, and Debt Relief Trusts, policy paper, 6 March 2026 (27 RSF arrangements; commitments SDR 10.3 billion, about USD 14 billion; five new RSFs in 2025 for SDR 3.4 billion). International Monetary Fund, Washington. Observation year 2026. Accessed 2026-11-03.back
- 10IMF (ed.), Lending, 2026 IMF Annual Report (five RSF requests agreed in the year to 30 April 2026, about SDR 1.8 billion). International Monetary Fund, Washington. Observation year 2026. Accessed 2026-11-03.back
