Don’t invest unless you’re prepared to lose all the money you invest. This is a high - risk investment and you are unlikely to be protected if something goes wrong. Take 2 mins to learn more

Don’t invest unless you’re prepared to lose all the money you invest. This is a high - risk investment and you are unlikely to be protected if something goes wrong. Take 2 mins to learn more

My Joule Box Ltd Issue 1: 8.0% Bond

24 months to mature 8% interest

My Joule Box Ltd Issue 1: 8.0% Bond

£27,800
Raised

48
Investors

59
Days to run

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invested c.1,500 people

Investment in the bond offer will help around 1,500 people access clean power in rural DRC.

households £2,000 invested

For each £2,000 invested, 50 tonnes of CO2 will be avoided by replacing diesel and kerosene with clean energy generation.

Green Mini Grid Expansion in Dungu, Democratic Republic of Congo

Investments in this raise will support the expansion of an existing solar mini-grid in Dungu, bringing clean, reliable electricity to more homes, businesses, and essential services. This will improve everyday life, support local jobs and livelihoods, and reduce reliance on polluting fuels—delivering clear benefits for both people and the environment.

About MyJouleBox

  • Directors name(s): Paul Berthomieu, COO
  • Directors name(s): Charlotte Cadoret, CFO
  • Location: Dungu, Democratic Republic of Congo
  • Sector: Green Mini Grids
  • Founded: 2023 (Parent company founded in 2016)
  • Les Soleils du Garamba is a green mini-grid project in Dungu, Democratic Republic of the Congo, delivering clean, reliable electricity to homes and businesses while helping protect the surrounding environment.
  • In 2024, My Joule Box acquired a 75% majority stake in Les Soleils de Garamba Limited (LSG), making it a subsidiary, with the remaining 25% held by original developer GDS International—ensuring strong continuity and deep project expertise.
  • MyJouleBox is a French-based pan-African startup that develops innovative hardware and software to optimise solar energy systems.
  • The company operates in several African nations, including Benin, Burkina Faso, Niger, Togo, Senegal, and the DRC.
  • Key product information

    Issuer: Les Soleils du Garamba (“MyJouleBox”)

    Issuing Country: Democratic Republic of Congo

    Investment target: £435,000

    Minimum investment: £50

    Maximum investment: No maximum

    Maturity: 24 months or on payment of the RBF grant, whichever is sooner.

    Expected interest rate: 8% per annum

    Withholding tax rate: 15% (applicable to UK residents who do not invest within an IF ISA)

    Interest payment frequency: Semi-annually beginning 6 months after the issue date

    Capital repayment: 24 months or on payment of the RBF grant, whichever is sooner.

    Financial instrument: Promissory Note / Interest Bearing Bond 

    Security: Secured (see details in the Offer Document)

    Key risks

    This is a bond issued by a single company (rather than a saving product) and therefore it is recommended that you are careful with the amount you invest. 

    You must read the offer document (provided below) where a statement of risks is presented, particularly in section 8 – Risk Analysis Overview 

    This page has been approved by Share In Ltd (“ShareIn”) (FRN 603332) on 08/04/2026 as a financial promotion for the purposes of Section 21 of the Financial Services and Markets Act 2000 (as amended). ShareIn’s approval of this page is limited to the communication of it by Lendahand Ethex Ltd (FRN 776908) as an appointed representative of ShareIn.

    Documents

    What the project investment will enable

    Through investments in this offer, Les Soleils du Garamba will expand access to reliable, clean electricity in Dungu, Democratic Republic of Congo. The project will extend an existing solar hybrid mini-grid, delivering sustainable power to low-income households and small businesses while supporting economic development and protecting the environment near Garamba National Park. Through this expansion, they will: 

    • Scale up solar generation capacity, add lithium-ion battery storage, and extend distribution networks to strengthen a reliable 24/7 power supply. 
    • Connect around 300 additional households, bringing clean, affordable electricity to approximately 1,500 people. 
    • Provide power to 300 small businesses, alongside supply of productive use equipment to stimulate local enterprise and job creation. 
    • Install 680 streetlights to improve community safety, reduce crime, and enable a thriving night-time economy.
    • Strengthen local operational capacity, supporting jobs and ensuring the long-term sustainability of the energy network. 
    • Reduce reliance on polluting fuels by offering renewable energy alternatives, helping to protect the surrounding environment and ease pressure on the nearby conservation area of Garamba National Park. 
    • Support inclusive economic growth by enabling entrepreneurship and improving livelihoods in underserved communities. 


    • Investments in the bond will be fully repaid from the proceeds of the Beyond the Grid Fund for Africa (BGFA) Results Based Finance grant, which will pay LSG at milestones for connections to the grid, with the grant totaling £2,580,000.

    MyJouleBox

    Les Soleils du Garamba is a portfolio of green mini-grid energy infrastructure in Democratic Republic of Congo, developed by GDS International, and jointly built with My Joule Box. Located in the city of Dungu, it is the first mini-grid in the Democratic Republic of the Congo.

    In 2024, MyJouleBox acquired a 75% stake in LSG, and it is now a subsidiary of MyJouleBox. MyJouleBox is a leading renewable energy developer and investor in West and Central Africa. For over 14 years, the Group has pioneered decentralised energy solutions, ranging from Solar Home Systems (SHS) to commercial and industrial (C&I) installations and hybrid minigrids. Through its operational subsidiaries operating under the ARESS brand, the Group combines innovative software platforms—including pay-as-you-go solutions and remote monitoring—with strong local field expertise across Benin, Burkina Faso, Côte d’Ivoire, the Democratic Republic of the Congo, Niger, Senegal and Togo. As an Energy-as-a-Service (EaaS) provider, MyJouleBox finances and operates sustainable infrastructure that fosters rural electrification, productive use of energy, and climate resilience.

    Social and environmental impact

    By scaling solar generation, adding battery storage, and extending distribution networks, the project will enable 24/7 power access while supporting local economic growth through productive use equipment for businesses. Strengthening local operational capacity will ensure long-term sustainability, creating jobs and reducing reliance on polluting fuels.

    Social Impact

    Social Impact

    The Green Mini Grid expansion funded by the bond offer will provide more than 300 homes and businesses with reliable electricity, both during the day and at night, thanks to the grid’s new battery storage. The grid expansion will boost economic empowerment, job creation, productivity, safety, and education, paving the way for a brighter future in Dungu, DRC.

    Safer streets

    The project will install 680 streetlights in Dungu, improving safety and enabling activities after dark in public spaces, streets, and schools.

    Better education

    Reliable electricity will improve study conditions for students, extending time for learning and enhancing access to electricity in schools.

    Boosted economy

    Local businesses will benefit from reliable power as well as productive use equipment including water pumps, freezers for vaccine storage, cold rooms, and electric vehicles, significantly contributing to the rural economic development.

    Environmental Impact

    Environmental Impact

    This project will deliver significant environmental benefits by enabling the mini grid to generate an additional 684 MWh of clean solar energy each year, preventing around 547 tonnes of CO₂ that would otherwise come from wood and biomass. By replacing these with clean electricity, the project directly reduces human‑induced pressures such as deforestation.

    10,944 tonnes

    of CO2 saved over the lifetime of the GMGs

    684 MWh

    of clean, solar energy generated each year

    50tonnes

    of CO2 saved for each £2,000 invested

    • pdf

      Offer Documents

      My Joule Box - Offer Document (Log In to download)

     

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