ENTEGA supplies private households and businesses in southern Hesse and the Rhine-Main region with green electricity, gas, fibre optics and energy services.
ENTEGA Plus GmbH
Darmstadt (headquarters) · Darmstadt (ENTEGA Point) · Heppenheim (ENTEGA Point) · Mainz (ENTEGA Point) · Erbach (ENTEGA Point)New on Amplifa
About ENTEGA
ENTEGA Plus GmbH, headquartered in Darmstadt, is a regional energy and telecommunications service provider for southern Hesse and the Rhine-Main region. The company offers electricity from 100% renewable sources, gas, heating electricity, district heating as well as internet and telephone tariffs. In addition, ENTEGA realises fibre-optic connections all the way into the apartment, including for multi-party buildings in the real estate sector, partly in cooperation with Deutsche Glasfaser AG. The portfolio also includes photovoltaic systems including battery storage, heat pumps, energy consulting, heating maintenance, charging cards for electric cars, as well as the combined tariffs Zuhause Flat and TV-Box. The green electricity products are certified with the ok-power quality seal; for 2026 a certified electricity volume of 1.262.832.000 kWh is documented. Customer centres (ENTEGA Points) are located in Darmstadt, Heppenheim, Mainz and Erbach.
- Site
- Darmstadt
- Processes
- Green electricity (100% renewable energy), Gas, Heating electricity, District heating, Internet & Telephony, Fibre-optic connection, Solar systems incl. battery storage, Heat pumps
- Materials
- Electricity from 100% renewable sources, Gas, District heating, Fibre-optic network (FTTH), Solar systems incl. battery storage, Heat pumps
- Certificates
- ok-power quality seal for green electricity, TOP Local Utility (electricity and gas) 2026, ok-power quality seal, TOP Local Utility 2026 (Energieverbraucherportal)
- Industries
- Private households, Business customers, Real estate sector (multi-party buildings)
- 01
Energy generation from renewable sources (certified purchased energy)
- 02
Sales of electricity, gas, heat, internet/telephony
- 03
Fibre-optic expansion and house connections
- 04
In-house cabling and router installation
- 05
Customer service, metering and billing
- 06
Consulting, maintenance and additional services
Products and Services
Electricity from 100% renewable sources
Certified according to ok-power criteria including support for new installations, for private and business customers.
Gas
Gas tariffs with price guarantee for private households and businesses.
District heating
Heat supply as a complement to the electricity and gas offering.
Fibre-optic network (FTTH)
In-house build-out and expansion with partners in southern Hesse, bandwidths up to 1,000 Mbit/s.
Solar systems incl. battery storage
Planning, consulting and provision of PV systems for self-generated electricity.
Heat pumps
Heat from air, ground or water with individual consulting and all-round service.
Locations
Darmstadt
DEHeadquarters
- Materials
- Green electricity, gas, fibre optics
Darmstadt
DEENTEGA Point (customer centre, Ludwigsplatz 9)
Heppenheim
DEENTEGA Point (customer centre, Friedrichstraße 36)
Mainz
DEENTEGA Point (customer centre, Seppel-Glückert-Passage 1)
Erbach
DEENTEGA Point (customer centre, Neckarstraße 71)
Inside the production
Industries
Additional services
Reference customers
Quality and Certification
The green electricity products are certified with the ok-power quality seal of EnergieVision e. V.; the certificate is valid from 01.01.2026 to 31.12.2026 for an electricity volume of 1.262.832.000 kWh. In addition, ENTEGA was awarded as TOP Local Utility 2026 for electricity and gas by the Energieverbraucherportal (energy consumer portal).
| Evidence | Darmstadt |
|---|---|
| ok-power quality seal | |
| TOP Local Utility 2026 (Energieverbraucherportal) |
Current Developments
- 2026
ok-power certification for the green electricity products from 01.01.2026 to 31.12.2026; awarded as TOP Local Utility 2026 by the Energieverbraucherportal