Solar Sister is a nonprofit launched around 2009 by former investment banker Katherine Lucey. The spark was seeing Rebecca, a Ugandan farmer, light her henhouse with a single solar lamp, increase egg production, rebuild her household finances and even build a school. 'If one woman can change this much with solar, what could a whole network of women do?' Solar Sister recruits, trains and supports women in the electricity-deprived 'last mile' villages of sub-Saharan Africa, giving them solar lanterns and clean cookstoves. The women earn income by selling directly to local (often electricity-less) people, while spreading clean energy in their communities. So far about 7,000 women entrepreneurs have been developed, reaching over 3 million people, with over 980,000 products sold (including 62,187 cookstoves). It generates $6.22 in social return per $1 invested (SROI), and a 2016 independent evaluation by ICRW confirmed the business empowers women economically, raises incomes, and makes communities safer.
●●○ medium
There is no confirmed −; independently verified + decide the position (B). No unreachable strike-through.= non-additive meter
Solar Sister: Light and clean energy sold by African women. The letter is B; certainty is medium. Unconfirmed concerns are placed under “Watching.” (As of 2026-Q3; estimate based on public information.)
Main narrative
One person’s story (N1)
+ A single story
A woman in an electricity-less village who relied on dim, dangerous, expensive kerosene and candlelight. Trained by Solar Sister, she becomes an entrepreneur selling solar lanterns and stoves, earns income to pay her children's school fees, and now her grandchild can draw and study at night by lamplight. For Eucharia Idoko in Nigeria, the lantern's light also helped protect her from nighttime attacks. Over 90% of parents report improved schoolwork for their children.
Source nature: Mastercard／Global Citizen / P1 Independent (reporting). Positive effects are not used to offset negatives.
Positive / negative effects
+ effects
- A nonprofit founded in 2009/2010. It recruits, trains and supports women in the last mile of sub-Saharan Africa (Nigeria/Tanzania/Uganda), supplying solar lanterns and clean cookstoves that women sell locally. About 7,000 women entrepreneurs have reached over 3 million people, selling over 980,000 products (including 62,187 cookstoves). It reduces kerosene and indoor air pollution.P1 First-party / independent (reporting) / Solar Sister／Global Citizen
− effects (confirmed)
- No confirmed −.
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- Scaling toward the need (10,000-entrepreneur / 10-million-people targets); continuing independent evaluation; quantifying clean-cookstove health effects; independence from grant dependence.
A second look
The plus is income, independence, confidence and safety for rural African women, clean energy for off-grid households (children can study by lamplight at night; over 90% of parents report improved schoolwork), and an effect on health and climate through reduced kerosene and indoor air pollution (People, Nature), backed by 15 years, the scale of about 7,000 entrepreneurs and 3 million+ reached, ICRW's independent evaluation and a $6.22 SROI. Caveats: scale is still small against the 1.3 billion people without electricity; dependence on grants and impact investment; and part of the SROI (e.g., the carbon-credit portion) is self-reported. Weighing women's empowerment and the independent evaluation, B/medium.
Sources
How to read this assessment
- Reachable upper bound (ceiling): a confirmed − sets the ceiling, and independently verified + decide the position within it. + do not cancel out −.
- The weight of evidence is not symmetric: only confirmed − are counted; the volume of disputes or allegations goes under “Watching.” + are counted from independent evidence, while an organization’s own PR is treated as “reference.”
- Size is not value: scale is not used in the assessment. Matters that stay within money or competition—investors, shareholders, sanctions, trade secrets—are also excluded.
- The letter (assessment) and certainty (how reliable the information is) are separate axes.
This is a translation; the Japanese version is authoritative. The assessments here are generated automatically by AI based on published criteria. The operator does not alter individual results. Because they are AI-generated they may contain errors, and they are opinion and commentary, not statements of fact. Where evidence is insufficient, the entry is marked “On hold.” Requests for correction are accepted via the form.
Terms: Narrative Value = an assessment (A–G) of the distance between the story an organization tells and its reality / Ceiling meter = a visualization of the reachable upper bound / Watching = unconfirmed matters not counted / Protected stakeholders = people, animals, nature, and future generations. | Generated by: AI | As of: 2026-Q3 | Back to top