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Dealing With Illegal Electricity Theft (Crypto Mining) by Tenants in Malaysia

Home Living Abroad
Architecture — modern building interior with oculus roof Kuala Lumpur, illustrating Dealing With Illegal Electricity Theft (Crypto Mining) by Tenants in Malaysia

Image: Zagdim

September 24, 2026
in Living Abroad, Malaysia, Property
Reading Time: 4 mins read
Tags: renting

How Should Overseas Landlords Respond to Illegal Electricity Theft (Crypto Mining) by Tenants in Malaysia?

In recent years, Malaysia has seen a string of cases where tenants stole electricity to mine cryptocurrency, leaving many landlords facing enormous back-billed electricity charges and even legal action. As an overseas landlord, if you encounter a similar situation, or want to guard against this kind of risk, consider the following measures:

1. Risk Prevention Before Renting Out the Property

(1) Strengthen Tenant Background Checks

  • Identity verification: require the tenant to provide a valid passport or Malaysian identity card (IC), work permit, or company registration documents, and verify that the documents are genuine.
  • Tenant credit checks: you can ask the tenant to provide utility bills from the last three months, bank statements, or proof of employment, to help confirm their background is genuine.
  • KYC (Know Your Customer) process: it is advisable to work with a property management company or a law firm to carry out a stricter tenant screening process.

(2) Make Responsibilities Clear in the Lease Terms

  • Clear electricity-use clauses: the lease should explicitly state that rewiring the electrical system and running high-power-consumption operations (such as crypto mining) are strictly prohibited, with violators facing legal liability and penalties.
  • Include an electricity-cost guarantee: require the tenant to pay a higher utility deposit, such as 2–3 months’ rent, as a buffer against unexpected costs.
  • Regular-inspection clause: authorize the landlord or the management company to carry out one routine inspection per month to prevent violations.

(3) Avoid the Risk of “Short-Term Leases”

  • Illegal miners typically rent for only 2–6 months to reduce their risk.
  • Prioritize long-term tenants (at least 12 months), and avoid frequent lease turnover.
  • If a tenant asks for an unusually low rent, be more cautious and look into it further.

2. Monitoring and Risk Management After Renting Out the Property

(1) Inspect the Property Regularly

  • It is advisable for the landlord, or a property management company acting for the landlord, to personally inspect the property, or arrange a third party to check it, every 1–2 months.
  • Check whether the electricity meter looks unusual: if the electricity bill suddenly spikes, verify it with TNB (Tenaga Nasional Berhad) immediately.
  • Watch for unusual behavior: such as the tenant installing surveillance cameras, replacing locks with heavier-duty ones, or refusing to let the landlord in — these should raise your alertness.

(2) Use a Smart Meter to Monitor Electricity Use

  • Some landlords have already installed a smart meter, which can monitor daily electricity consumption remotely.
  • If you notice electricity consumption suddenly spiking (for example, increasing several-fold), contact TNB immediately for an inspection.

(3) Spot the Warning Signs Early

The following unusual situations may be signs that a tenant is engaged in illegal mining:

Unusual Situation Possible Risk
A sudden increase in the electricity bill May involve illegal mining
The tenant asks to change the locks or install extra security equipment May be trying to conceal illegal activity
Large amounts of machinery noise coming from the property May indicate mining equipment has been installed
The tenant comes and goes frequently at night Avoiding drawing attention during the day
Unwilling to provide valid identification May be using a false identity

If you notice any of the above, contact the property management company or TNB immediately to investigate.

3. How to Respond to a TNB Electricity-Bill Claim

If the landlord has already received a bill-claim letter from TNB, they should act immediately:

(1) Appeal to TNB

  • Submit a police report: if the landlord has previously reported the police or flagged unusual behavior, the police record can be submitted as evidence of the tenant’s illegal activity.
  • Provide the lease document: to prove the property was rented out and not used by the landlord personally.
  • Request a technical inspection report: TNB can be asked to send an officer to investigate the meter records and confirm whether there is evidence of abnormal electricity use.

(2) Seek Legal Assistance

  • If TNB still requires the landlord to pay the electricity bill, it is worth consulting a Malaysian lawyer, and seeking a reduction or an installment arrangement under the Electricity Supply Act.
  • You can also contact the Malaysia Landlord Association for legal support.

(3) Apply for an Installment Plan

  • The government is currently exploring an installment payment option for affected landlords, to ease the pressure of paying a large electricity bill in one lump sum.
  • You can apply to TNB’s customer service department for an installment payment plan.

4. How Should Landlords Protect Their Own Interests Going Forward?

Measure Effect
**Raise tenant screening standards** Avoid renting to a suspicious tenant
**Install a smart meter** Detect unusual electricity use early
**Inspect the property regularly** Reduce the risk of illegal activity
**Add penalty clauses to the lease for violations** Reduce potential losses
**Use a licensed rental agent** Ensure tenants are properly screened

Related in this series:

  • Malaysia Tax Residency: The 182-Day Rule and What It Means for You
  • Buying and Owning a Car in Malaysia as a Foreigner
  • Malaysia RPGT Explained: Capital Gains Tax for Foreign Sellers
  • Malaysian Income Tax on Rental Income for Overseas Landlords

Have a question about this guide? Leave a comment below, or ask Zagdim directly.

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