In my experience, the crucial temperature concern with Nepenthes is a significant difference between the daytime and nighttime temperatures. Individual species have their own particular likes and dislikes, but what I have mentioned here has generally worked for all of my plants. Other growers have suggested a medium of pure perlite, which should also work fine, although I haven't tried it. Homophyllous and heterophyllous types can be left in trays year round, but keep the water level slightly lower in cooler temperatures to avoid rot. A spot in a greenhouse or windowsill which is bright but doesn't get much direct sunlight works well.
Flourescent light is also a good option.
Most evergreen Butterworts are quite easy to grow, and are quite rewarding to cultivate. They are ideal for apartment dwellers, or others for whom space is at a premium. I treat mine essentially the same as I do Drosera , with the exception of placing them in a slightly less sunny position. Their flowers are also quite lovely, and provide a very nice decorative presence. All species require a winter dormancy period, which will be discussed at the end of the section.