Читать книгу Delft Design Guide -Revised edition - Annemiek van Boeijen - Страница 27

Most companies focus on the top markets, while three quarters of global adult population that fit into the bottom echelon of the wealth pyramid largely go unlapped. In developed countries, about 20 percent of adults fall within this category. 2.7 billion people live on less than $2.50 a day. (source: Credit Suisse global wealth report 2019)

Liter of Light is an open source design by Alfredo Moser (Brasil) for a low-cost light tube to provide daytime interior lighting for dwellings with tin roofs. The device is simple: a transparent two-liter bottle is filled with water plus a little bleach to inhibit algal growth and fitted into a hole in the roof. During daytime the water inside the bottle refracts sunlight, delivering about as much light as a 40–60 watt incandescent bulb to the interior. A solar bottle can last up to 5 years. Liter of Light has installed more than 350,000 bottle lights in more than 15 countries and taught green skills to empower grassroots entrepreneur .

wealthy markets

> $ 1,000,000

mature markets

$ 100,000 - $ 1,000,000

emerging Markets

$ 10,000 - $ 100,000

Survival Markets

≤ $ 10,000

0,9% o wns 46% of the global wealth

9,8% o wns 37,3% of the global wealth

32,6% o wns 14,3% of the global wealth

56,6% owns 2.4% of global wealth

2,883 million

1,661 million

499 M

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