Is it legal to mine on someone else's electricity?

Mining Monero using someone else’s electricity can be legal if you have clear permission and follow the relevant agreements and local laws. Without permission, you could face charges for the power used, eviction, dismissal, or even criminal allegations, depending on where you live and what happened. An available socket or an “electricity included” deal is not automatically permission to mine.

Permission needs to cover the electricity

Mining means making a computer do calculations to help secure Monero’s network. That work uses electricity and creates heat, whether you run mining software or mine through a web browser.

Two permissions matter: permission to use the device and permission to use the electricity. Owning your laptop does not give you unlimited rights to someone else’s power.

Ask whoever has authority over the electricity supply or account. Explain:

• That you plan to mine cryptocurrency, not just browse the web.
• Which equipment you will use.
• Roughly how much power it draws and how long it will run.
• Whether you will cover the extra cost.

Written permission helps avoid misunderstandings. It does not override a lease, workplace rule, electricity contract, or local law.

“Bills included” does not always mean unrestricted use

The answer depends on the setting and the terms you agreed to.

• A rented home: Check your lease for fair-use limits, excessive consumption clauses, and restrictions on business activities. Ordinary computer use may be allowed while continuous mining is restricted.
• A workplace: Ask an authorized manager or facilities team. A coworker saying “nobody will notice” is not approval. Even on your own laptop, unauthorized mining could breach workplace rules.
• A hotel, dorm, or shared house: Included electricity may be intended for normal personal use. Continuous mining can raise separate questions about noise, heat, and shared bills.
• A friend’s home: Permission to charge your phone is not necessarily permission to run mining equipment overnight.

If the terms are unclear, ask before you start. Do not assume that silence means consent.

What can happen without permission?

Local laws differ. Unauthorized electricity use may be treated as a contract dispute, a debt, theft of electricity, fraud, or another offense. The outcome can depend on how you obtained the power, whether you concealed the activity, and how much you used.

You might also be required to reimburse costs or face consequences under your tenancy or employment agreement. Tampering with a meter, bypassing billing, or connecting to another person’s circuit without authorization adds serious legal and safety risks.

A small electricity bill does not automatically make unauthorized use lawful. For a dispute or uncertain arrangement, check local rules or ask a qualified legal professional.

Make any agreement practical and safe

Estimate the additional electricity before asking. A plug-in power meter can help you compare consumption while mining with consumption during normal use.

Electricity is billed in kilowatt-hours, a measure of energy used. Additional watts divided by 1,000, multiplied by running hours, gives an estimate of the extra kilowatt-hours. Multiply that by the applicable electricity rate.

Agree on a spending limit, operating hours, and how reimbursement works. Keep ventilation clear, avoid overloaded sockets, and stop if permission is withdrawn.

The bottom line

Only mine using someone else’s electricity when you have clear authorization that covers mining and complies with the applicable terms and laws. If you cannot establish that permission, do not use their power to mine.