If you're trying to produce light equivalent to what we're used to in first world countries, yes, you're right.
If you're only trying to replace kerosene lamps, you don't need much power. A tenth of a watt with an LED gives a light output comparable to a kerosene lamp. See the numbers elsewhere in the thread.
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If you're trying to produce light equivalent to what we're used to in first world countries, yes, you're right.
If you're only trying to replace kerosene lamps, you don't need much power. A tenth of a watt with an LED gives a light output comparable to a kerosene lamp. See the numbers elsewhere in the thread.