To evaluate your demand and load management, you need to track and compare your results and performance indicators, such as energy consumption, intensity, cost, savings, reliability and sustainability. Energy consumption is usually measured in kilowatt-hours (kWh), while energy intensity is the ratio of energy consumption to output or activity and is usually measured in kWh per unit of production or service. Energy cost is the amount of money paid for energy consumption and is usually measured in dollars per kWh or per month or year. Energy savings is the amount of energy avoided or reduced with demand and load management measures and is usually measured in kWh or percentage. Energy reliability is the degree to which you can maintain energy supply and quality without interruptions or fluctuations, usually measured in frequency and duration of outages or power quality issues. Finally, energy sustainability is the degree to which you can reduce environmental impact and carbon footprint with renewable or low-carbon energy sources, usually measured in greenhouse gas emissions or renewable energy certificates.