Lightning, thunder and power surges: when does your Dutch insurance cover electronics and fixed installations?

What do contents and buildings insurance cover for lightning damage?

When lightning strikes your home or somewhere nearby, a power surge can travel through electrical cables, telephone lines, or coaxial connections and fry your devices. Your contents insurance (inboedelverzekering) generally covers all moveable, loose electronic items you use inside your home: think televisions, computers, laptops, tablets, game consoles, kitchen gadgets (e.g. microwave, coffee machine), and major appliances like washing machines and dryers. Some policies also extend to items temporarily taken outside, such as a laptop damaged during a lightning storm while you were at a café, but this depends on your outside-home cover (buitenshuisdekking). If you want to check whether your policy offers the right protection at a fair price, consider a commission-free contents insurance comparison.

Buildings insurance (opstalverzekering) focuses on fixed installations that are permanently attached to the house. This includes devices like a home alarm system, an electrically operated awning or shutter, a charging station for your electric vehicle, a heat pump, solar panels and their inverter, and built-in ovens or hobs. A useful rule of thumb: if you need tools to remove the item, it probably falls under buildings insurance. Always check your policy wording for the exact split, as interpretations vary between insurers. It's also wise to review your commission-free buildings insurance comparison to understand where your responsibility ends and the insurer's begins.

• Contents insurance: TVs, hi-fi systems, computers, tablets, mobile phones, washing machines, fridges
• Buildings insurance: solar panels, EV charger, heat pump, alarm system, built-in kitchen appliances

When is power surge damage covered (and when not)?

The central question for any claim is: what caused the surge? Dutch insurers distinguish between a direct lightning strike on your building and an indirect surge that enters through the electricity grid. Direct strikes are normally covered by standard contents and buildings policies. However, an external surge — for instance when lightning strikes a transformer substation a few kilometres away and the spike travels to your home — is often only covered if your policy includes a specific 'surge' or 'overspanning' clause. Many insurers use a distance criterion: if the lightning struck within 1–2 kilometres of your postal code, the surge is presumed to be caused by the lightning. If the strike was farther away, or if the surge resulted from maintenance work on the grid, your claim may be rejected.

Technical requirements also matter. Most insurers expect your electrical installation to meet Dutch standards (NEN 1010) and to be equipped with a functioning earth leakage circuit breaker (aardlekschakelaar). If an expert report finds that your fuse box is outdated or that you lack a basic surge protector, your payout could be reduced or the claim denied altogether. Some modern policies even stipulate that surge damage is only covered when a type 1 or type 2 surge protection device (SPD) is present in your meter cupboard.

*Please note: exact coverage varies per insurer and policy. Always consult your own policy conditions.

As with vandalism damage to your car or home, a lightning claim usually requires that the cause was a sudden, external event. Internal causes, such as a design flaw in the device, are not covered.

How to prove power surge damage to your insurer

You can strengthen your evidence by requesting a proximity certificate from the KNMI, which indicates whether lightning strikes were recorded near your address. While insurers can obtain this data themselves, proactively providing it often speeds up the process.

Practical steps to prevent power surge damage

Prevention is cheaper than claiming. Investing in surge protection can save thousands of euros in repair costs and excess payments. The most familiar tool is a power strip with built-in surge protection, available from about €15 to €50. More importantly, you can have a central surge protector (SPD type 1 or 2) installed in your fuse box, which stops a spike before it reaches any connected device. While a modern meter cupboard upgrade costs several hundred euros, it usually pays for itself by safeguarding expensive electronics.

Insurers increasingly pay attention to these precautions. Some policies include a 'prevention requirement': if you lack proper earthing or protection, your payout may be reduced. It's advisable to have your electrical installation inspected according to the NEN 3140 standard and to keep the inspection report alongside your policy documents.

• Install a surge protection device (SPD) in your fuse box — have a certified electrician do this.
• Use power strips with surge protection for expensive items like TVs and computers.
• Test your earth leakage circuit breaker annually and replace it if faulty.
• During a severe thunderstorm, unplug sensitive devices if you have no central protection.

When estimating the value of your electronics for contents insurance, our contents valuation checklist can help prevent underinsurance.

What if your claim gets rejected?

It happens: an insurer rejects your claim because the surge isn't sufficiently provable, because the damage is attributed to poor maintenance, or because your electrical setup didn't meet the policy's requirements. Don't give up immediately. Ask for a written explanation and check which policy clause the insurer invokes. You may have grounds for a second assessment or a contra-expertise, where an independent expert re-examines the device.

You can file a complaint with the insurer's internal complaints department and, if unresolved, escalate to the Dutch Financial Services Complaints Institute (KiFiD). Legal costs for a procedure may be covered by your legal expenses insurance, if you have that module. If you're unsure whether your rejection was justified, an independent policy review can clarify your position.

When does an independent insurance check make sense?

Many households haven't reviewed their insurance policies in years. Coverage for electronics may have shifted due to silent amendments in your policy terms, or because you've bought new devices that need extra protection. An independent, commission-free check can map out whether your contents and buildings insurance still match your risks, whether there are gaps in your lightning cover, and whether you're overpaying because of hidden commission built into your premium. Especially if you've invested in expensive hardware, software, or smart home systems, a reassessment is smart.

The beauty of such a check is that it's non-binding: you're not obliged to switch insurers, and you receive a clear overview from which you can decide yourself. Learn more about how the free non-life insurance check works and see if your policies are still competitive.