Updated on January 20, 2024


Created on June 9, 2014

ToughStuff Desk Lamp Kit

Upcoming Update

The Desk Lamp Kit is part of a modular set of products using a lightweight, portable photo-voltaic solar system with USB connectivity.

Tested By
  • United Nations Framework Convention for Climate Change (UNFCCC) Clean Development Mechanism (CDM)
Content Partners


Product Description

The Desk Lamp Kit is part of a modular set of products using a lightweight, portable photo-voltaic solar system with USB connectivity.

Target SDGs

SDG 7: Affordable and Clean Energy

SDG 8: Decent Work and Economic Growth

Market Suggested Retail Price


Target Users (Target Impact Group)


Distributors / Implementing Organizations

Toughstuff micro-enterprise program - Business in a Box (BIAB) - trains and deploys Solar Village Entrepreneurs (SVE) to sell solar lanterns. Also partner with NGOs (such as Christian Aid).

Competitive Landscape

Direct competitors include d.Light S30, MPOWERD Luci Original, Nokero N200, and d.Light S2.

Manufacturing/Building Method

Mass produced

Intellectural Property Type

Trade Secret

User Provision Model

Distributors sell to wholesalers, who then sell to local retailers, village entrepreneurs, and franchisees. Tough Stuff has implemented a "Solar Village Entrepreneur (SVE) scheme to facilitate their products. [caption id="attachment_15996" align="alignnone" width="300"] Distribution Graphic[/caption]

Distributions to Date Status


Lamp type


Number of light points


Total light output (lumens)

40 lumens

Multiple brightness settings (yes/no)


Light duration on single charge (hr)

5.1 hours

Mobile charging (yes/no)


Power source

Solar Panel

Battery type

Nickel Metal Hydride

Peak power rating (Wp)


Battery capacity (kWh; mAh)


Battery nominal voltage (V)

1.2 V

User replaceable battery (yes/no)


User replaceable light (yes/no)


Design Specifications

*Components overview* *Solar Panel* • Capacity 1 Wp 5.7V DC • Integrated charge controller • Waterproof and flexible • 2 meter cable with socket *LED Lamp* • Multiple intensity levels • Full battery indicator • Hanging and mounting options *Mobile Phone Connector Cables* • USB connector • Different brands of most popular phone models Battery: 1500mAh NiMH Dimensions (LxW) (cm) 23 x 19

Product Schematics

Technical Support


Replacement Components



ToughStuff offers a one year warranty on the PV kit. No information on lifecycle or disposal.

Manufacturer Specified Performance Parameters

See image below. [caption id="attachment_15995" align="alignnone" width="300"] Performance Values[/caption]

Vetted Performance Status

*Performance* • Average wattage: 0.61 W; 40 lumens • Daily Burn Time (hr): 3.5; Autonomous time 1.5x DBT • Solar Run Time > 100% DBT • 7 hours to full charge • Rated average life of 5,000 hours


None specified.

Complementary Technical Systems


Academic Research and References

Chen, W., Lemes, A., Moorthy, A., Strickland, L., Zhu, Y., Renewable energy at the base of the pyramid in Haiti  Internet. Ann Arbor (MI): University of Michigan; 2014 Apr 22 [cited 2015 Jun 10].

Solanki, C.S., Mudaliar, S., Strategies to target rural PV market in developing countries – a perspective. PVSC. 2010 Jun 20-25;35:2392-2396.

Crawford, Guy. n.d. Case Study 10 – Solar Success: The “ToughStuff” Story. www.ids.ac.uk. Brighton, U.K.: Institute of Development Studies.

ToughStuff International – Ashden Climate Solutions. n.d. ashden.org.

UNFCCC CDM. 2012. Project 6950 : Tough Stuff Solar Panel and Lamp Sales Madagascar Project. cdm.unfccc.int. UNFCCC.

Tough Stuff for Rural Madagascar. 2011. Energize the BoP. August 31, 2011.

Sun & Wind Factory. n.d. Sun & Wind Factory.

Lighting Africa. 2012. ToughStuff Turns on the Light in Refugee Camp. Lighting Africa Newsletter, January 2012.

Quality Standards. n.d. Verasol.


Compliance with regulations

Tough Stuff product packages have passed Lighting Africa's minimum quality standards and performance targets.

Evaluation methods


Other Information

ToughStuff has received awards and grants such as the Global Social Business Incubator Award in 2009, the NEMEX Energy and Environment and Tech Awards in 2010, and the Ashden Award for sustainable energy in 2011. ToughStuff has also received subsidies from the Daey Ouwens Fund and Marshall Fund.

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