Practical Guide to Calculating Energy Savings Before Applying for an Energy Efficiency Certificate (CAE)

It is essential to calculate energy savings before applying for a CAE to determine whether an investment in energy efficiency makes economic sense and justifies the application for the certificate.

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We will begin by describing four strictly necessary steps when applying for a CAE. We will break down each step with some milestones that explain the scope. We will conclude by explaining key performance indicators (KPIs) and some frequently used tools to carry out the steps, which we will subsequently describe.

1. Conduct an Energy Audit:

   • Comprehensive Analysis: A detailed study of current energy consumption, identifying the most energy-intensive equipment, peak demand times, and potential energy losses.
   • Consumption Measurement: Use measurement equipment to obtain precise data on electricity, gas, etc. consumption.
   • Bill Analysis: Review energy bills from recent years to identify trends and consumption patterns.
   • Installation Inspection: Conduct a visual inspection of the installations to detect potential deficiencies and opportunities for improvement.

2. Simulate Savings Scenarios:

   • Simulation Tools: Use specialized software to simulate different energy improvement scenarios and calculate potential savings.
   • Consider Proposed Measures: Evaluate the impact of each proposed measure on total energy consumption.
   • Estimate Costs: Calculate investment costs and payback periods for each measure.

3. Compare Scenarios and Select Measures:

   • Cost-Benefit Ratio: Prioritize measures that offer the greatest energy savings per euro invested.
   • Technical Feasibility: Ensure that the selected measures are technically feasible and compatible with existing installations.
   • Environmental Impact: Consider the environmental impact of each measure and select those that contribute to reducing greenhouse gas emissions.

4. Develop an Action Plan:

   • Define Objectives: Establish clear and quantifiable objectives in terms of energy savings.
   • Establish a Timeline: Define an execution schedule for each measure.
   • Assign Responsibilities: Designate those responsible for implementing each measure.

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How Energy Saving Certificates (ESCs) work

Spain has implemented various measures to promote energy efficiency. One of the most innovative is the Energy Saving Certificate (CAE), a mechanism that involves several actors in a dynamic process of saving and certification

Key Performance Indicators (KPIs):

• Energy Consumption per Unit of Product: Allows comparison of energy consumption across different processes or products.
• Energy Intensity: Measures the amount of energy consumed per unit of production.
• Load Factor: Indicates the effective utilization of energy equipment and systems.

Useful Tools:

• Energy Management Software: Allows real-time monitoring and analysis of energy consumption.
• Tariff Comparison Platforms: Help find the best energy rates.
• Energy Savings Calculators: Allow estimation of the potential savings of different measures.

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Quick Guide to Obtaining a CAE (Energy Savings Certificate)