You can already find in Pev Grow the low consumption lamps by Agrolite. You have available bulbs of different powers, mixed spectra or specific spectra for growing or flowering phase.
Compact fluorescents lamps were designed for growing in small indoor spaces, ideal for your plant cuttings and mother plants maintenance, and you can also use them to support HPS lamps to get more branches and flowers.
Although you can not see it, these light bulbs have built-in a reactance so you only have to screw it to the socket (E40) becoming ready to run. These lamps have a durability of 8000 hours and a power of 70 lumen / watt so they will make you save a bit money in your electricity bill.