E.ON Off Grid Solutions GmbH (EOGS) is incorporated in Düsseldorf, Germany with a branch registered in Arusha, Tanzania. EOGS is a 100% subsidiary of E.ON SE (registered in Germany), one of the world’s leading private power & gas utilities with strong presence in Europe and North America.

We currently operate mini-grid projects in ten villages in Tanzania under the brand name “Rafiki Power”, supplying electricity to more than 4,000 people.

Although technology agnostic, our current mini-grid solution is a containerized solar PV and battery system, which provides high-quality grid-equivalent. Power distribution to customers is enabled with a 230V 50Hz AC mini-grid (single and three-phase). Customers are connected to the distribution grid with pre-paid smart-meters which enable mobile money payments and a fully automated control of the energy consumption.

More information

Type of organisation

  • Corporate Firm

Rural electrification expertise

  • (D)ESCO
  • Advocacy
  • Finance & Investment
  • Project Developer
  • Service Provider

Off-grid system used

  • Micro/Mini-grid
  • Stand-alone

RE-technology used

  • Solar PV
  • Battery / Energy Storage
  • Inverters / Power Components
  • Hybrid
  • (Bio-)Diesel Back-up

Based in



Daniel Becker
Managing Director