Updated on January 12, 2024


Created on July 9, 2016

Mobisol Solar Home System

Upcoming Update

A family of large solar home systems, ranging in power from 40 W to 200 W and designed to power businesses or larger appliances such as refrigerators.

Tested By
  • Lighting Global
Content Partners


Product Description

The Mobisol Solar Home System is a large integrated home and business level energy system with a solar panel, battery, power electronics, appliances and pay-as-you-go functionality. ENGIE Mobisol GmbH systems are available with power ratings of 40, 80, 100, 120 and 200 Watts (some power ratings and component combinations are only available in certain markets). ENGIE Mobisol GmbH systems have larger generation capacities than similar solar home system products in East Africa to support more demanding appliances such as refrigerators, televisions and de-huskers for example.

Within each of the available power ratings, various options are available to customize the system to the user’s needs. Available components include: 3 to 12 LED light bulbs (2 W or 3.5 W), a TV (several sizes available), a radio, a phone charger and a Sun King Pico 50 Portable Lamp.

ENGIE Mobisol GmbH is located in Berlin, Germany, it manufactures the systems in Germany and China and has sales centres in Kenya, Rwanda and Tanzania.

Target SDGs

SDG 7: Affordable and Clean Energy

SDG 8: Decent Work and Economic Growth

Market Suggested Retail Price


Target Users (Target Impact Group)

Household, Small and Medium-sized Enterprises

Distributors / Implementing Organizations

ENGIE Mobisol GmbH has sales and service centres at national and regional level and sales centres at local level in some regions of its target countries (Tanzania, Rwanda and Kenya).

Competitive Landscape

Manufacturing/Building Method

ENGIE Mobisol GmbH manufactures different parts of its Solar Home Systems kits in Germany and China and then ships these components to Kenya for assembly. The kit assembly process and manufacturer supply is monitored by ENGIE Mobisol GmbH and each of the system's components are put through a series of quality tests. The system appliances are sourced from a third party and are ENGIE Mobisol GmbH quality assured. Interview with representative

Intellectural Property Type


User Provision Model

Users can purchase systems from retail storefronts in Tanzania, Rwanda or Kenya. ENGIE Mobisol GmbH has a system of national, regional and market hubs with flagship stores in the capital cities.

Distributions to Date Status

As of September 2019, ENGIE Mobisol GmbH has installed over 150,000 Solar Home Systems. They estimate these systems benefit 750,000 people across Tanzania, Rwanda and Kenya.

Description of power outputs

Up to 5 DC and 2 USB outlets

Description of light points

Up to 12 LEDs (2 W or 3.5 W); up to 1 portable lamp (Sun King Pico 50)

Total lighting service (lumen-hours per solar-day)

Up to 80,000 lumen-hours per solar-day

Peak power rating (Wp)

80 – 200 Wp

Battery capacity (kWh; mAh)

Up to 1.152 kWh; 96,000 mAh

Nominal battery voltage (V)

12 V

Battery type

Sealed lead-acid

User replaceable battery (yes/no)


Remote system diagnostics (yes/no)


Payment structure


Mobile service required (yes/no)


Design Specifications

ENGIE Mobisol GmbH currently offers five solar home system sizes with power ratings of 40, 80, 100, 120 and 200 Watts (availability of specific systems varies with location). The systems include a solar panel, a pay-as-you-go enabled solar battery and controller (54 Ah or 96 Ah), three to twelve LED light points (2 W or 3.5 W bulbs), two 5 volt USB port, three 12 volt ports and two 3-prong Mobisocket jacks. Several systems also include a radio, a television of various sizes, a phone charger and/or a portable lamp supplied by Sun King Eco. ENGIE Mobisol GmbH is working towards prototypes and pilots for systems that are larger than 200 watts, including an 800 W system capable of powering solar welding.

Product Schematics

Technical Support

A toll free service hotline is available for customer inquiries that is open from 7 am - 9 pm local time. If their customer service team is not able to resolve the issue over the phone, they arrange for a technician to visit the customer's home within 72 hours to take care of the repair free of charge (during the 3 year warranty period). It is also possible to contact ENGIE Mobisol GmbH for technical support issues by email or through a contact form on their website. ENGIE Mobisol GmbH call customers if they detect a technical fault with their system and communicate payment reminders to customers through SMS and by phone in the case of late payment.

Replacement Components

All components can be replaced using only a screwdriver, excepting the battery which is replaceable but requires specialized tools.


The lifetime of Mobisol systems is 4.5 - 5 years. Interview with representative There is a three or four year warranty on the system controller and battery, a two year warranty on the TV and a one year warranty on all other appliances . The solar panel has a 20 year warranty provided by the manufacturer.

Manufacturer Specified Performance Parameters

Performance targets vary with different system sizes and combinations. For the 200W premium package (sold in Tanzania), ENGIE Mobisol GmbH state that "It has highest usable battery capacity in that market" and the "Long expected battery life-time for more than 6 years".

Vetted Performance Status

Lighting Global vetted the systems by testing components according to the Quality Test Method in the latest edition of IEC 62257-9-5 and/or their own Lighting Global Quality Assurance Protocols for Solar Home System Kits. They confirm that the systems meet the Lighting Global Quality Standards. At a component level, they tested the: battery capacity (mAh) of the two Battery/Control Box options, peak power at STC (W) of the different PV Modules, luminous flux (lm) and lamp efficacy (lm/W) of the Light sources, power (W) and battery capacity (mAh) of the TVs, and also listed which component combinations are available. At a system level, they tested/confirmed the following parameters for the 200W Solar Home System with 32" TV: Full battery run time (hrs) per day of solar charging for each appliance alone or in combination; Total light output (lm); Lamp type; Special features (mobile charging and appliances and pay as you go); Overall durability and quality standards tests (drop, soldering and electronics workmanship, mechanical, minimum warranty, performance reporting)


Be sure to follow proper electrical installation and control guidelines.

Complementary Technical Systems

Mobisol has designed specific business kits and appliances that are compatible with their solar home system. Included in these kits are the necessary appliance as a multiple phone charging unit or a barber’s hair clipper and also educational material to help start the business – such as book-keeping essentials.

Academic Research and References

Rolffs, P., Byrne, R., Ockwell, D., 2014, Financing sustainable energy for all: pay-as-you-go vs. traditional solar finance approaches in Kenya.

Oruoch, A. N. O., 2015, Financial Aspects of Stand-alone Solar Power Systems in Sub-Saharan Africa. M.Sc. Thesis, University of Missouri – Kansas City, Kansas City, MO.

Warnecke, T., Houndonougbo, A. N., 2016, Let There Be Light: Social Enterprise, Solar Power, and Sustainable Development. Journal of Economic Issues, 50(2), 362–372.

Pueyo, A., 2013, Real Time Monitoring Technologies for Pro-Poor Access to Electricity. IDS Evidence Report No. 12,. Institute of Development Studies (IDS).

Adwek, G., Boxiong, S., Ndolo, P.O., et al., 2020, The solar energy access in Kenya: a review focusing on Pay-As-You-Go solar home system. Environ Dev Sustain, 22, pp. 3897–3938.

Junghans, Dirk, Emily McKie, and Thomas Gottschalk. n.d. Mobisol Project: Affordable Solar Home Systems. www.repic.ch. Switzerland: Renewable Energy & Energy Efficiency Promotion in International Cooperation (REPIC).

GSMA Mobile for Development Utilities . 2016. Mobisol: Pay-As-You-Go Solar for Entrepreneurs in Rwanda. www.gsma.com. London, U.K. : GSMA.

Lighting Global Program. 2018. Off-Grid Solar Market Trends Report 2018. www.lightingafrica.org. Washington D.C., USA: International Finance Corporation (IFC).

Demello, Allan . n.d. Mobile Enabled Offgrid Electrification. sustainabledevelopment.un.org. Mobisol GmbH.

Lighting Global. 2018. Solar Home System Kit Quality Standards, Version 2.5. Lighting Global.

IEC TS 62257-9-5:2018 | IEC Webstore. n.d. webstore.iec.ch.

MySol and Mini-Grid Solar Solutions. n.d. ENGIE.

ISO – International Organization for Standardization. 2014. ISO 9001:2008. ISO. November 5, 2014.

IEC 60065:2014 | IEC Webstore. n.d. webstore.iec.ch.

IEC 61215-1:2016 | IEC Webstore | Rural Electrification, Solar Power, Solar Panel, Photovoltaic, PV, Smart City, LVDC. n.d. webstore.iec.ch.


Compliance with regulations

The Solar Home Systems are certified by Lighting Global and meet relevant ISO and IEC certifications including ISO 9001:2008 (Quality management systems) for its manufacturing process, IEC 60065 for its TVs and IEC 61215 for its solar PV modules.

Evaluation methods

The Quality Test Method (QTM) is the full test method within IEC Technical Specification 62257-9-5 used by Lighting Global to verify comprehensive product performance. Results from QTM testing determine if a product meets the Lighting Global Minimum Quality Standards. As part of the QTM, Mobisol Solar Home Systems have passed the following Durability tests: Drop test, Switch and Connector Cycling, Strain Relief Test, Physical Ingress Protection Test, Protection from Frequent Rain

Other Information

Mobisol provides reliable solar power for a quarter million beneficiaries in Africa Mobisol Service Animation Mobisol trains their employees and technicians through the Mobisol Academy, a short video about this can be found here.

Comments from the Community

1 Comment

  1. Wilfredo Torres says:

    Even when it’s a good and affordable idea to give access only by SMS, Internet access is becoming a real, affordable and desired possibility all around the globe, even in rural areas. This app could have an important upgrade need very soon, and it seems to be a hard project from its actual state.

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