An interim report examining the influence of California utility efficiency programs on the compact fluorescent lamp (CFL) market shows that consumers’ awareness and acceptance of CFLs has significantly increased over the past decade. Compact Fluorescent Lamps Market Effects Final Interim Report, published in May 2009, analyzes survey data from consumers in California and three other states and indicates that consumers’ awareness and satisfaction with CFLs has increased even in areas that lack a program to promote CFLs. The study’s objectives were to understand the cumulative effect of three California investor-owned utilities’ efficiency programs on the CFL market (both in California and the U.S.); quantify any unclaimed energy savings produced by market effects; and determine whether the utilities could reliably calculate and count savings from these market effects toward their program goals. The study included a survey of households in California and in a comparison area (Georgia, Kansas, and Pennsylvania), where sustained programs to promote CFLs don’t exist.