Pros & cons of Eneco
According to the CallMePower energy experts, here are the main strengths and downsides of Eneco as a Belgian energy supplier.
Pros Eneco
- 100% green electricity produced in Belgium (wind + solar)
- Third largest energy supplier in Belgium — well-established and reliable
- Eneco Comfort Bonus assistance package, free for loyal customers
- Wide range of extra services (solar panels, home battery, EV chargers)
- Good Greenpeace sustainability score (3.25 / 5)
Cons Eneco
- Not yet active in the Brussels-Capital Region (Flanders & Wallonia only)
- Smaller customer base than ENGIE or Luminus — fewer local shops
- Customer service mainly via phone or online — no in-person counter
Eneco tariffs
Eneco offers a clear range of electricity and gas contracts — every tariff comes with 100% green electricity as standard. Below are the current Eneco offers with their annual price and per-kWh rate.
Electricity contracts
-
Eneco Optimaal Vast
- Duration: 1 year — online only
- Type: Fixed
- Green electricity: Yes
Exclusive promotion02 588 02 451418 €
1318 €/year- kWh price
- 0.1342 €
- Annual standing charge
- 62.00 €
- Estimated monthly cost
- 109.83 €
-
Eneco Vast
- Duration: 1 year (then indefinite)
- Type: Fixed
- Green electricity: Yes
02 588 02 451452 €/year- kWh price
- 0.1481 €
- Annual standing charge
- 65.00 €
- Estimated monthly cost
- 121.00 €
-
- kWh price
- 0.1413 €
- Annual standing charge
- 65.00 €
- Estimated monthly cost
- 115.58 €
-
Eneco Solar
- Duration: 1 year — solar panel owners
- Type: Variable + solar buy-back
- Green electricity: Yes (+ injection rate)
Solar owners02 588 02 451289 €/year- kWh price
- 0.1307 €
- Annual standing charge
- 65.00 €
- Estimated monthly cost
- 107.42 €
Table updated on 18/05/2026. The annual price is based on an annual consumption of 3,500 kWh.
Gas contracts
-
Eneco Optimaal Vast Gas
- Duration: 1 year — online only
- Type: Fixed
Exclusive promotion02 588 02 451789 €
1689 €/year- kWh price
- 0.0945 €
- Annual standing charge
- 79.00 €
- Estimated monthly cost
- 140.75 €
-
- kWh price
- 0.1018 €
- Annual standing charge
- 79.00 €
- Estimated monthly cost
- 151.00 €
-
- kWh price
- 0.0978 €
- Annual standing charge
- 79.00 €
- Estimated monthly cost
- 145.42 €
Table updated on 18/05/2026. The annual price is based on an annual consumption of 17,000 kWh.
Become an Eneco customer
Fill in the form and a CallMePower adviser will call you back free of charge to set up your Eneco contract.
Who is Eneco Belgium?
Eneco has become a well-known name on the Belgian energy market. The originally Dutch company entered the Belgian market in 2011 and has since grown into the third largest supplier of electricity and natural gas. Eneco offers electricity, natural gas and its services in Flanders and Wallonia — it is not yet active in the Brussels-Capital Region.
Eneco is strongly committed to renewable energy. All power supplied by Eneco is 100% green, generated by wind and solar energy in Belgium. Due to large investments, this supplier has also become an important green energy producer. These efforts are rewarded with good assessments from various environmental organisations, such as Greenpeace.
How many customers does Eneco have in Belgium?
Eneco Belgium has grown very quickly in recent years. In the first quarter of 2023, Eneco had a market share in Flanders of 12.70% on the electricity market and 13.99% on the gas market. This makes Eneco the third largest provider in Flanders, after ENGIE and Luminus.
Extra services offered by Eneco
In addition to energy, Eneco has a very extensive range of services:
- Implementation of mandatory boiler maintenance
- Insulation of a house
- Installation and maintenance of Eneco solar panels
- Installation of a home battery
- Installation of a charging station for electric driving
Eneco Comfort Bonus
Loyal customers are rewarded at Eneco with the Eneco Comfort Bonus assistance package, at no extra cost.
Customer for more than one month
- Bicycle assistance throughout Europe
- Assistance for your own electric car
- 24/7 access to a network of professionals (water leak, key problem, etc.)
Customer for more than one year
- All the above benefits
- Additional assistance on white goods after factory warranty
- Partial intervention in the payment of the energy bill in case of involuntary unemployment
Eneco reviews
Eneco has been one of the most popular energy suppliers in Belgium for years. The Greenpeace 2026 sustainability ranking gives Eneco a score of 3.25 / 5 — the highest among the major Belgian suppliers, reflecting Eneco's 100% green-energy commitment.
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Become an Eneco customer
Fill in the form and a CallMePower adviser will call you back free of charge to set up your Eneco contract.
How to contact the Eneco customer service?
The Eneco customer service can be reached in a few different ways, both on- and offline. The most important contact details are below.
| Contact method | Dutch | French |
|---|---|---|
| Eneco phone number | 015 25 66 66 | 010 23 97 96 |
| Become an Eneco customer Ad | 02 588 02 45 — English-speaking adviser | |
| Online contact form | Eneco contact form (NL) | Eneco contact form (FR) |
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Address Eneco Belgium
Eneco has two offices in Belgium — in Mechelen and Ghent. The Eneco office in Ghent belongs to Eneco Solar Belgium. The head office is in Mechelen at the address below; this is also the address for all postal correspondence.
Eneco Belgium (head office)
Blarenberglaan 2C
2800 Mechelen
Belgium
