Use the solar light you have instead of a kerosene lamp
Why this can help
A charged solar light that meets the same lighting need can displace kerosene combustion. A Ugandan trial found less fuel-based lighting with a solar home system; separate measurements show that kerosene wick lamps emit black carbon.
One possible next step
Charge the working solar light you already own as instructed. Check that it lights your usual evening task adequately, then use it in place of the kerosene lamp for that task.
What changes the outcome
Use a functioning light already owned and charged by the sun; keep adequate illumination. Count any kerosene still used. A home-system trial does not guarantee the performance of every lantern. Battery and panel manufacture and end of life are excluded; no personal carbon estimate is made.
Your illustrative scenario
Over one year · with the assumptions below
You
12 litres of fuel used less
You + 10 friends
132 litres of fuel used less
1,000 participants
12,000 litres of fuel used less
These are scenarios, not measured personal or collective savings. One separate household per participant. People sharing a home count it once, not once each.
Your inputs
- Kerosene per comparable evening before
- 0.08 L
- Kerosene still used per comparable evening
- 0.02 L
- Evenings with suitable solar charging per year
- 200
Calculation of the difference: (0.08 − 0.02) L × 200 = 12 litres of fuel used
Calculation boundaries
Kerosene used for the same evening tasks and duration with adequate light. Count remaining or additional fuel lamps in the household. The alternative is an already-owned functioning light charged by the sun. Manufacture, batteries, disposal and any grid charging are outside this fuel-volume comparison; it is not a lifecycle or climate balance.
0.08 litres before, 0.02 litres after and 200 evenings are editable examples, not trial averages or lamp ratings. Use recorded consumption for comparable lighting and include all remaining fuel use. No universal lamp-displacement rate is applied.
Sources and calculation references
Read the method: universalizable.com/en/method/ · One sheet · print double-sided, long-edge binding