I want to put a fluorescent light tube in my garage, and actually have energy saving lamps in the garage. Would it be cheaper to run lights or fluorescent tube energy saving lamps? I believe that energy saving lamps are rated at 20W in the bulb. I’ve yet to buy a tube svjetla.Vjerojatno’ll go to the fourth pipe 40 feet so that W? Wouldnt be cheaper to run 20 Watt energy saving light bulbs or is there some science to this confusing