<human>:  What are good options for energy-efficient light bulbs?
<bot>: Good options for energy-efficient light bulbs include compact fluorescent lights (CFLs), light-emitting diodes (LEDs), halogen incandescents, and induction lighting. CFLs and LEDs are the most energy-efficient and cost-effective choice, while halogen incandescents are less efficient, but the least expensive option. Induction lighting is the most efficient option, but also the most expensive.