126. INSURANCE OF BATTERY-STORAGE FACILITIES

1. Introduction

Battery-energy storage systems (BESS) are increasingly important in modern electricity markets because they store electricity during periods of excess generation and release it when demand increases. They facilitate renewable-energy integration, grid stability, frequency control, peak management and energy security. However, battery-storage facilities create distinctive risks, including fire, explosion, thermal runaway, equipment failure, cyber incidents, environmental contamination and business interruption. Insurance therefore plays an important role in allocating and managing the financial consequences of these risks.

In South Africa, no single statute establishes a comprehensive insurance regime specifically for battery-storage facilities. Instead, insurance arrangements operate within general insurance, contract, environmental, occupational-safety and electricity regulation law.

2. Types of Insurance Coverage

Battery-storage developers commonly require several forms of insurance. Construction All Risks (CAR) insurance may protect a project during construction and installation. Once operational, property-damage insurance can cover physical loss caused by fire, explosion or equipment failure.

Business-interruption insurance may compensate for income lost when an insured event prevents the facility from supplying electricity or providing ancillary grid services. Developers may also obtain public-liability insurance where battery incidents cause injury or damage to neighbouring property.

Other relevant products include machinery-breakdown insurance, environmental-liability insurance, cyber insurance and professional-indemnity insurance for designers, engineers and technical consultants.

3. Battery-Specific Risks

Lithium-ion batteries present a significant insurance concern because damaged or defective cells may experience thermal runaway, potentially producing intense fires that spread between battery modules. Insurers therefore examine battery chemistry, fire suppression, ventilation, spacing, monitoring systems and emergency-response arrangements.

Another important issue is degradation. Battery capacity naturally decreases through repeated charging and discharging. Ordinary deterioration is generally distinguishable from sudden accidental damage and may therefore fall outside insurance coverage unless specifically insured.

Insurers may consequently impose warranties concerning maintenance, battery-management systems, temperature monitoring and compliance with technical standards.

4. Disclosure and Insurance Contracts

Accurate disclosure is particularly important when insuring emerging technologies. Project owners should provide insurers with material information concerning battery chemistry, storage capacity, operating conditions, safety systems and previous incidents.

Misrepresentation or material non-disclosure can create disputes concerning whether an insurer is entitled to reject or reduce a claim. Policy wording should therefore clearly identify covered risks, exclusions, deductibles, limits, notification requirements and loss-calculation methods.

5. Environmental and Regulatory Liability

Battery-storage incidents may create environmental consequences through contaminated firefighting water, damaged cells or hazardous materials. The National Environmental Management Act 107 of 1998 (NEMA) establishes important environmental duties, including principles concerning pollution prevention and remediation.

Insurance can finance certain liabilities, but it does not remove statutory responsibility. Operators must continue to comply with applicable environmental authorisations, occupational health and safety requirements, municipal fire rules and electricity-sector regulations.

6. Case Law

Case Name/Citation: Guardrisk Insurance Company Ltd v Café Chameleon CC 2021 (2) SA 323 (SCA)

Facts: A restaurant claimed business-interruption losses under an insurance policy following disruption associated with the COVID-19 pandemic and governmental restrictions.

Legal Issue: Whether the insured event had sufficiently caused the business interruption for the policy to respond.

Judgment: The Supreme Court of Appeal considered the policy language and principles governing causation in determining insurance liability.

Legal Principle/Ratio Decidendi: Insurance coverage depends upon proper interpretation of the policy and establishing the required causal connection between the insured peril and the loss.

Significance: For battery-storage projects, operators claiming interruption losses following fires, equipment failures or other incidents must establish that the loss falls within the policy wording and satisfies its causation requirements.

Case Name/Citation: Centriq Insurance Company Ltd v Oosthuizen 2019 (3) SA 387 (SCA)

Facts: The dispute concerned an insurer's reliance on policy provisions in resisting liability.

Legal Issue: How insurance policy conditions and exclusions should operate when determining coverage.

Judgment: The Court examined the contractual provisions governing the insurer's liability.

Legal Principle/Ratio Decidendi: Insurance disputes must be determined through careful interpretation of the policy wording, contractual obligations and applicable exclusions.

Significance: Battery-storage developers should ensure that exclusions relating to defective design, gradual deterioration, electrical faults, cyber events or fire do not create unexpected gaps in protection.

7. Conclusion

Insurance of battery-storage facilities is essential to the financial sustainability of modern electricity infrastructure. Effective coverage requires careful assessment of fire, technological, environmental, cyber and operational risks. Clear policy drafting, accurate disclosure, strong safety systems and regulatory compliance can reduce disputes and improve project bankability. As South Africa expands renewable electricity and storage capacity, specialised BESS insurance will become increasingly important for maintaining investment confidence, grid resilience and responsible risk allocation.