These patio lights are perfect for those who want to go the more traditional route in terms of appearance, but who still want to reap the benefits of solar energy. These lamps, which can reach a full height of four feet, call to mind old-fashioned lampposts. Outdoor Solar Store calculates that this lamp will save $11 or $12 on electrical costs per month, totaling about $140 a year—more than the lamp's $120 price tag.