What this company does is they send a letter to households that say, "Here's your energy use, here's your neighbor's energy use: You're doing well." Smiley face.
这家公司的所做的就是把信寄到各家各户 告诉他们 "这是你的能源利用状况 这是你邻居的能源使用状况 你做的很好" 加个笑脸