Climate risk is no longer theoretical. It is now actuarial.
Across global insurance markets, climate-linked losses are moving from “once-in-a-century” to recurring balance sheet events. In 2025 alone, natural disasters generated about $224 billion in losses globally, with insurers covering roughly $108 billion. This marks another year in which insured losses exceeded the $100 billion threshold.
For insurers, this is not abstract sustainability discourse. It is a pricing reality. And increasingly, ESG performance is becoming a proxy for risk quality.
For Nigerian and African businesses, this shift is critical. Many organisations still treat ESG as reputation management. The insurance industry is reframing it as risk management and risk pricing.
The implication is simple: companies with weak environmental controls will pay more for cover. Some may struggle to obtain cover at all.
Nigeria provides a unique lens into this shift.
Insurance penetration remains low. Estimates place penetration around 1.5% of GDP in 2024, which is far below the global average of about 7%. Other datasets place penetration even lower historically, underscoring how underinsured the economy remains.
This low penetration is often discussed as a growth opportunity. But climate risk is quietly reshaping how that growth will happen. As insurers absorb higher catastrophe losses globally, underwriting discipline is tightening. Risk selection is becoming sharper. Data requirements are increasing. ESG disclosure is becoming underwriting intelligence.
For Nigerian businesses seeking affordable cover, particularly in agriculture, energy, infrastructure, and manufacturing, environmental risk management will increasingly determine premium outcomes.
Across Africa, the contrast is instructive.
South Africa’s insurance penetration sits in double digits, reflecting mature risk pricing ecosystems. Meanwhile, many African markets remain underpenetrated, signalling both opportunity and vulnerability.
But penetration alone does not determine resilience. Risk quality does.
Consider sectors most exposed to environmental volatility:
-Agriculture is facing flood and drought volatility.
-Energy assets exposed to transition and physical climate risk
-Infrastructure is vulnerable to extreme weather.
-Real estate exposed to floodplain and heat stress risks
In these sectors, ESG is rapidly becoming an underwriting language.
Flood mapping
Emissions transition planning
Water stewardship. Biodiversity impact
I. Supply chain traceability.
These are no longer sustainability reporting topics. They are insurance conversations.
There is another structural shift happening beneath the surface.
Globally, weather-related events now drive the vast majority of catastrophe losses, and this accounts for over 90% of total losses and nearly all insured losses in recent years.
This means climate volatility is not cyclical. It is structural.
For insurers, that translates into three immediate actions:
-First, repricing high-risk geographies and sectors.
-Second, rewarding companies that demonstrate measurable risk mitigation.
-Third, embedding climate analytics into underwriting models.
For businesses, this means ESG maturity will increasingly influence the cost of risk, not just the cost of capital.
In Nigeria, this transition is already visible in subtle ways.
The insurance sector itself is growing alongside the broader financial ecosystem, with finance and insurance showing strong real-term growth in recent economic data.
But growth alone will not solve risk exposure. Without stronger ESG integration, growth may simply scale vulnerability.
The next phase of insurance expansion in Nigeria will likely be ESG-informed expansion, where data-rich, climate-aware businesses access better cover and pricing.
So what should Nigerian and African CEOs do now?
-Start by reframing ESG from compliance to operational risk control.
-Environmental risk mapping should become standard enterprise risk practice.
-Climate scenario modelling should inform capital planning.
-Supply chain environmental exposure should be quantified.
-Insurance discussions should include sustainability teams, not just finance and risk.
The most forward-looking companies are already doing this not because regulators demand it but because insurers increasingly expect it.
The future of insurance in Africa will not just be about expanding coverage. It will be about improving insurability. And insurability will depend on ESG credibility.
Businesses that treat ESG as a reporting exercise may find themselves paying a premium, and that is literally it. Those who treat ESG as risk intelligence will likely access better pricing, broader cover, and stronger long-term resilience.
Climate risk is being priced into insurance.
The question is no longer whether ESG matters to insurers.
The question is whether African businesses will move fast enough to stay insurable.
Sarah Esangbedo Ajose-Adeogun is the Founder and Managing Partner at Teasoo Consulting Limited, a foremost ESG consulting firm. She is a former community content manager at Shell Petroleum Development Company and served as the special adviser on strategy, policy, projects, and performance management to the Government of Edo State. She is also the host of the #SarahSpeaks podcast on YouTube @WinningBigWithSarah, where she shares insights on leadership, strategy, and sustainable growth.
