Operations measures a company's effectiveness at, well, keeping the lights on. This category measures how well a company does at going about their daily business. Can customers access their account online? Do they send their bills out on time and consistently? Are things as easy as possible on their customers? This category looks at those aspects of a company's effectiveness. The top three companies with the highest operations score are Constellation, Pulse Power and Green Mountain Energy, followed closely by Spark Energy and Tomorrow Energy.