Now that you have your goals and targets, you can start looking for opportunities to reduce your energy consumption and waste. You can use various techniques to identify and prioritize opportunities, such as brainstorming, checklists, best practices, gap analysis, or Pareto analysis. You can also categorize your opportunities into three types: no-cost or low-cost, medium-cost, and high-cost. No-cost or low-cost opportunities are those that require little or no investment and can be implemented quickly, such as adjusting the thermostat, switching off lights and equipment, or fixing leaks. Medium-cost opportunities are those that require some investment and have a moderate payback period, such as installing energy-efficient lighting, insulation, or sensors. High-cost opportunities are those that require a significant investment and have a long payback period, such as replacing old equipment, upgrading the HVAC system, or installing renewable energy sources.