Needless to say, but maybe someone still has to gear up ... the energy-saving bulbs, energy class A. .. cost more, they last about 10,000 hours, at least 5 times as much our good tungsten filament, they consume much less ... a 15w light bulb as a 75w incandescent then 75/15 = 5 times less than that for domestic consumption .... All ' external, such as trail paths in what could be better than lamps with batteries that are recharged by daylight? Initial cost and then ... thanks sun! There are marketing and even real "street lamps" Solar
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