D.light S1
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An ultra-affordable solar lamp

Detailed Description:
Designed to target students in rural Africa and India. It is intended to displace dim and dangerous kerosene wick lamps, and does so through the use of renewable solar energy.

Known drawbacks of design:


Designed in:

Status of realization:
In production

Education, Empowerment

Region of use:
Africa, Asia


d.light S1 has been designed as a no-risk study lamp for young people because it is ultra-affordable, extremely durable, and easy to use. At a recommended retail price of about USD8, d.light S1 is the most affordable quality solar lantern in the world. It is designed to withstand hot, dusty, and humid environments filled with insects and wild animals. d.light S1 is so durable that it can be dropped from a height of three meters or even run over by a car without any impact to its functionality. The product should last for several years, saving families a significant amount of money that can be used for other important needs. d.light S1 is designed with a friendly and approachable personality for the target consumer group--young people and students. The operation of the lamp is simple and intuitive. It gives high-quality light , and the stand rotates to ensure better solar charging is achieved, and for the student to adjust the light to suit their needs.

Without a bright and reliable source of light, family activities are severely limited in the evening. Because kerosene oil must be rationed, children often do not have the opportunity to study at night. Their rate of learning and test scores suffer as a result. Providing bright and reliable light can change the trajectory of a child’s life. Independent studies show that access to electric light will increase study hours per night and improve test scores and pass rates. In a village in Sudan, the World Bank found that solar lighting increased pass rates from 57 percent to 97 percent—in only one year. Pass rates increased to 100 percent the following year. Children with access to solar lighting study for by one to four hours more per evening. Entire families benefit as well, with cost savings from reduced kerosene expenditures, increased productivity, and safer, cleaner home environments.

It is intended to displace dim and dangerous kerosene wick lamps, and does so through the use of renewable solar energy. Worldwide, 1.6 billion people do not have access to electricity and typically rely on kerosene wick lamps for light. Kerosene wick lamps are dim, dirty, and dangerous, releasing at least 100 tons of CO2 into the atmosphere each year and annually harming millions through kerosene-related fumes or fires. When used for reading, these lamps offer a murky yellow light that strains the eyes whilst simultaneously producing damaging black soot. In addition, kerosene oil may cost up to one-third of a family’s total monthly income.


Is the design protected by patent or ip registration?

How has the development of the design been financed hereunto?
Company development costs

Is there a plan for future investments?
Not known

Is there in-house competencies to secure market roll out of the design, with regards to investment, distribution, sales, etc.?


Designed by:
Robin Chilton

Director - Product Design

Professional status of designer:


City/Country of residence: