Single-phase or Three-phase Power – What to Choose
Single-phase and three-phase power have different characteristics and costs. Single-phase is suitable for small consumption levels, while three-phase supports more energy-hungry appliances at the same time, but has a higher installation cost.
Steps to find what suits you:
1. Check your bill:
• 8 or 12 kVA → Single-phase
• 15 kVA and above → Three-phase
2. Assess your bill:
3. Fill in the contact form at energysmart.gr:
Our energy consultants will call you, answer all your questions and suggest the provider with the lowest price per kilowatt-hour.
4. Enjoy your new plan:
Business or household electricity, tailored to your needs, with a simple and fast process.
Tip:
Regardless of whether you have single-phase or three-phase power, choosing the right provider and tariff is the key to lower bills.
Frequently Asked Questions
What Is Single-phase Power?
It is the most common type of power used in most homes and small businesses. The single-phase system provides a steady voltage, usually 230V in Europe, which is sufficient to power most household appliances, such as lights, refrigerators, washing machines and other small electrical appliances.
It is simpler and less costly to install than three-phase power, but it has limited capacity, which may not be sufficient for industrial applications or for running many energy-hungry appliances at the same time.
Why should I choose it?
Simple Installation: The single-phase system requires only two wires (one phase and one neutral), making it simpler and faster to install.
Sufficient for Everyday Needs: It provides voltage up to 230V, which is enough to cover the needs of most household appliances.
Suitable for Small Businesses and Homes: Ideal for cases where there is no need for a large amount of power, such as in small businesses or homes.
However, its downsides are:
It does not offer a large amount of power
Because the network is simple, in the event of a fault there is no supply.
Three-phase Power: What It Is
Three-phase power is an electricity supply system that uses three conductors to transfer electrical energy. Unlike single-phase, three-phase power can transfer a larger amount of power and provides a more stable voltage, usually 400V.
Ideal:
For applications requiring high energy consumption, such as industrial facilities, large businesses and buildings with multiple energy-hungry appliances.
The three-phase system is more efficient at distributing the load, as the power is shared across three phases, thus reducing the risk of overload and appliance wear.
If a fault occurs on one of the phases, the other two continue to supply power, thus ensuring the uninterrupted operation of the appliances connected to the system. Important for businesses that cannot afford power interruptions.
The disadvantages:
The three-phase system requires four wires (three phase and one neutral), making it more complex to install and maintain.
The standing charge for three-phase power is higher compared to single-phase.
How to Switch from Single-phase to Three-phase Power
You have decided to make the switch and are wondering what it takes to get three-phase power?
First, a certified electrician assesses your premises and checks whether there is a three-phase panel and a three-phase supply. Then, you submit an application to HEDNO (DEDDIE) for a supply change. You will need to pay the connection fee and, after approval, HEDNO will upgrade your meter.
Next, you will need to sign a new electricity supply contract with your provider or with a new provider, adapted to the new three-phase power arrangements. Here, energysmart.gr is by your side. It carries out a free comparison of electricity providers and finds you the one that suits you best.
In addition, we handle the entire provider-switching process, so you do not waste your time for nothing. And even after your new contract begins, we are by your side for anything you may need. With so many conveniences, whatever your electricity need may be, you know where to turn.
Fast, simple and reliable, only at energysmart.gr.


