Latest Building Automation Articles

Green Energy

Green energy integrates renewable electricity from solar, wind, and hydro into smart grids using power electronics, advanced inverters, energy storage, and grid automation to enhance reliability, power quality, and low-carbon transmission.

Green Energy Fundamentals

Green energy, often synonymous with renewable energy, has gained significant attention in recent years as the world seeks to reduce its reliance on fossil fuels, minimize environmental damage, and promote a more sustainable future. This shift towards clean energy resources helps reduce greenhouse gases and air pollutants and plays a vital role in conserving non-renewable resources and promoting efficiency.

There are several green energy sources, each with unique benefits and challenges. Solar energy, one of the most popular renewable sources, harnesses the sun's energy to generate electricity. Solar panels, commonly installed on rooftops or in solar farms, convert sunlight into electricity for homes and businesses. As solar technology advances, solar system installation costs have dropped significantly, making it more accessible to individuals and communities alike. For homeowners, adopting comprehensive strategies is easier when using resources like energy management frameworks that track consumption and optimize production.

Wind energy, another widely recognized green energy source, is generated by converting the kinetic energy of wind into electricity using wind turbines. Large wind farms can produce significant energy, often enough to power entire communities or cities. However, wind power's effectiveness depends on the location and weather conditions, as wind speeds must be sufficient to generate electricity consistently. To mitigate variability, utilities often integrate energy management systems to balance wind output with demand forecasts.

Hydropower, one of the oldest renewable green energy sources, utilizes the movement of water to generate electricity. Dams and hydroelectric power stations convert the potential energy of water stored at a height into electricity, providing a stable and reliable source of energy. However, the construction of dams can lead to environmental concerns, such as habitat disruption and changes to local ecosystems. In facilities adjacent to dams, building energy management systems can tune loads to align with scheduled releases for greater efficiency.

Biomass energy is derived from organic materials, such as plants and animal waste, which can be burned directly for heat or converted into biofuels, such as ethanol and biodiesel. This form of green energy can help reduce waste and greenhouse gas emissions. However, the large-scale production of biomass crops can compete with food production and lead to deforestation. Modern plants deploy energy management controls to maintain combustion efficiency and emissions performance across feedstock variations.

Geothermal green energy taps into the Earth's natural heat by capturing steam or hot water from underground reservoirs to generate electricity. This clean energy source has a minimal environmental impact, but its availability is limited to areas with specific geological conditions. In buildings served by district geothermal, integrating building automation enables coordinated HVAC setpoints and thermal storage strategies.

Green energy offers numerous environmental benefits, such as reducing greenhouse gas emissions, air pollution, and dependence on finite energy resources like coal, oil, and natural gas. By transitioning to renewable green energy sources, we can significantly reduce our carbon footprint and mitigate the effects of climate change. Additionally, green energy technologies can create new job opportunities and stimulate economic growth.

However, there are also some drawbacks to green energy sources. For example, intermittency issues can arise with solar and wind power, depending on weather conditions. Moreover, the initial investment for installing renewable energy systems can be high, although costs have decreased recently.

Individuals can contribute to the growth of green energy by installing solar panels in their homes, using energy-efficient appliances, and supporting policies that encourage the adoption of renewable energy sources. The cost of switching to green energy varies depending on the technology, location, and government incentives available.

Emerging trends in green energy technology include advancements in energy storage solutions, such as batteries and hydrogen storage, which can help address intermittency issues. Furthermore, innovations in smart grids and microgrids allow for better integration and management of renewable sources. These improvements are complemented by advanced energy management analytics that forecast loads and orchestrate distributed assets.

Government policies play a critical role in supporting the adoption of green energy. For example, incentive programs, tax credits, and subsidies can help lower the cost of renewable power installations, making them more accessible to consumers. Additionally, regulations and targets for reducing greenhouse gas emissions and increasing the use of renewable sources can drive further investment in green energy technologies. Organizations can accelerate adoption by instituting a formal energy management program that aligns incentives, metering, and continuous commissioning efforts.

Embracing green energy sources is crucial for building a sustainable and cleaner future. By understanding the different types of green energy and their environmental benefits, individuals and governments can make informed decisions to promote adopting green energy solutions.

As the United States and other countries worldwide continue to invest in renewable technologies, the production landscape is rapidly changing. This transition to green energy sources is essential to reducing our reliance on fossil fuels, minimizing the environmental impacts of energy production, and ensuring a sustainable future for generations to come.

Increasing public awareness and education is one way to promote green energy further. By informing citizens of the benefits and potential drawbacks of different renewable sources, we can foster a more informed and engaged public, encouraging individuals to make greener choices in their daily lives.

Community-based green energy renewable projects can also help facilitate the widespread adoption of green energy. These projects, such as community solar gardens or small-scale wind farms, allow individuals who may need more resources or space to install their renewable systems to benefit from clean energy production. In addition, by pooling resources and sharing the benefits, communities can work together to create a more sustainable future.

Advancements in green energy technologies will also play a significant role in increasing the adoption of renewable sources. As researchers and engineers continue to develop more efficient and affordable technologies, the barriers to entry for green energy will continue to decrease. In addition, innovations in materials science, such as the development of more efficient solar cells or improvements in wind turbine design, can lead to significant gains in the performance of renewable systems.

Finally, international cooperation and collaboration will be essential in advancing green energy on a global scale. Climate change and environmental degradation do not respect national borders; thus, a united effort is necessary to combat these challenges. By sharing knowledge, resources, and technology, countries can work together to promote the adoption of green energy and build a more sustainable future for all.

Green energy is an essential component of a sustainable, environmentally responsible future. Investing in renewable technologies, supporting government policies, and engaging in individual and community-based efforts can help drive the adoption of green energy sources and ensure a cleaner, healthier world for future generations. With continued innovation, increased public awareness, and international collaboration, the promise of a green energy revolution becomes more attainable each day.

Building Automation Channel

Transmission Methods In Industrial Networks

Transmission Methods Industrial Networks explain Ethernet/IP, PROFINET, Fieldbus, Modbus TCP, and wireless options, covering deterministic control, latency, throughput, topology, and noise immunity for PLC, SCADA, and IIoT connectivity in factory automation.

What Are Transmission Methods in Industrial Networks?

Methods for transferring industrial data via wired, wireless, and real-time protocols to ensure deterministic control.

✅ Compare Ethernet/IP, PROFINET, Fieldbus, Modbus TCP, and CANopen

✅ Address latency, jitter, determinism, bandwidth, and reliability

✅ Select media, topology, shielding, and QoS for harsh environments

The data communication can be analogue or digital. Analogue data takes continuously changing values.

For a broader systems perspective, building automation fundamentals explain how communication methods underpin monitoring and control.

In digital communication, the data can take only binary 1 or 0 values. The transmission itself can be asynchronous or synchronous, depending on the way data is sent. In asynchronous mode transmission, characters are sent using start and stop codes and each character can be sent independently at a nonuniform rate. The synchronous mode transmission is more efficient method. The data is transmitted in blocks of characters, and the exact departure and arrival time of each bit is predictable because the sender/receiver clocks are synchronized. For an introduction to protocols and media choices, industrial automation communication outlines typical options and tradeoffs.

The transmission methods in industrial communication networks include baseband, broadband, and carrierband. In a baseband transmission, a transmission consists of a set of signals that is applied to the transmission medium without being translated in frequency.

To relate signaling to hardware, industrial network components illustrate how cables, switches, and interfaces shape performance.

Broadband transmission uses a range of frequencies that can be divided into a number of channels. Carrier transmission uses only one frequency to transmit and receive information.

Digital optical fibre transmission is based on representing the ones and zeros as light pulses.

The type of the physical cabling system or the transmission media is a major factor in choosing a particular industrial communication network. The most common transmission media for industrial communication network is copper wire, either in the form of coaxial or twisted-pair cable. Fibre optics and wireless technologies are also being used.

Coaxial cable is used for high-speed data transmission over distances of several kilometers.

The coaxial cable is widely available, relatively inexpensive, and can be installed and maintained easily. For these reasons it is widely used in many industrial communication networks.

Twisted-pair cable may be used to transmit baseband data at several Mbit/s over distances of 1 km or more but as the speed is increased the maximum length of the cable is reduced. Twisted-pair cable has been used for many years and is also widely used in industrial communication networks. It is less expensive than coaxial cable, but it does not provide high transmission capacity or good protection from electromagnetic interference.

Fibre optic cable provides increased transmission capacity over giga bits, and it is free from electromagnetic interference. However, the associated equipment required is more expensive, and it is more difficult to tap for multidrop connections. Also, if this is used for sensor cables in process plants, separate copper wiring would be required for instrument power, which might as well be used for the signal transmission. Higher-speed backbones enable analytics such as advanced energy management that depend on timely, high-resolution data.

In many mobile or temporary measurement situations, wireless is a good solution and is being used widely. Real-world deployments like automated level crossings demonstrate how wireless links support safety-critical automation.

Today's environment

Conventional point-to-point wiring using discrete devices and analog instrumentation dominate today's computer-based measurement and automation systems. Twisted-pair wiring and 4-20 mA analog instrumentation standards work with devices from most suppliers and provide interoperability between other 4-20 mA devices. However, this is extremely limited because it provides only one piece of information from the manufacturing process. Historically, measurement networks and automation systems have used a combination of proprietary and open digital networks to provide improved information availability and increased throughput and performance. Integrating devices from several vendors is made difficult by the need for custom software and hardware interfaces. Proprietary networks offer limited multi-vendor interoperability and openness between devices. With standard industrial networks, on the other hand, we decide which devices we want to use. A concise summary of outcomes such as scalability, diagnostics, and lifecycle savings is provided in benefits of industrial networks for decision makers. Designers can map devices to control, supervisory, and enterprise layers using hierarchical network guidance before selecting vendors.

Building Automation Channel

Energy Management

Energy management enhances power systems via smart grid controls, demand response, load forecasting, SCADA, and IoT sensors to improve energy efficiency, peak shaving, power quality, and renewable integration across industrial and utility operations.

Energy Management: Real-World Examples and Uses

Energy management (EM) is a crucial practice today, as it helps businesses and individuals reduce their carbon footprint, save money, and contribute to a more sustainable future. By incorporating key elements such as efficiency, demand response, building automation, audits, smart grid technology, HVAC optimization, conservation, renewable energy, monitoring, and analytics, a comprehensive EM program can lead to significant savings and environmental benefits. As the world continues to face the challenges of climate change and dwindling resources, EM will remain an indispensable tool for creating a more sustainable and efficient future. For organizations starting out, an energy management program can provide a structured roadmap for setting goals and tracking performance.

Energy management is crucial for several reasons. First, it helps reduce carbon emissions and the overall environmental impact of energy use. Second, it saves money by lowering costs and making facilities more energy efficient. Third, EM practices contribute to businesses and organizations' long-term sustainability and competitiveness. Modern energy management systems offer centralized dashboards and automated alerts that help sustain these gains over time.

Building automation is one of the primary ways energy management systems improve efficiency in buildings. These systems utilize sophisticated technology to control and optimize energy use in various systems, such as heating, ventilation, air conditioning (HVAC), lighting, and security. By automating these systems, buildings can operate more efficiently and effectively, reducing waste and saving on costs. For broader context, guides on building automation fundamentals can help teams understand integration points with HVAC and lighting controls.

Energy management in industrial facilities requires a combination of best practices, including implementing EM systems, regular audits, and data analytics. By monitoring and analyzing data, asset managers can identify areas of inefficiency, implement targeted improvements, and track the success of their energy management strategies. As operations mature, adopting advanced energy management practices can unify analytics, forecasting, and optimization across multiple facilities.

Renewable energy sources, such as solar, wind, and geothermal, can be integrated into energy management systems to improve sustainability further and reduce reliance on fossil fuels. For example, a facility may use solar panels to generate electricity during peak sunlight hours, reducing the need for grid-supplied energy and reduce energy costs. Additionally, renewable energy can be used with energy storage systems to provide backup power during high demand or grid outages. Well-designed building energy management systems coordinate on-site renewables with storage and loads to maximize self-consumption and resilience.

An effective EM strategy comprises several key components, including a thorough understanding of use, a commitment to continuous improvement, and a focus on energy-efficient technologies and practices. For example, businesses can implement energy-saving measures, such as retrofitting lighting systems with energy-efficient LEDs, upgrading HVAC systems to more efficient models, and improving building insulation to minimize heat loss. Upgraded energy management controls enable granular scheduling, sensor-driven setpoints, and measurement and verification to prove savings.

Smart grids and demand response play a critical role in EM by enabling a more flexible and responsive approach. Smart grids use advanced technology and real-time data to optimize electricity generation, distribution, and energy consumption. On the other hand, demand response programs incentivize consumers to reduce or shift their energy use during periods of high demand, helping to balance the grid and lower overall costs. When paired with a capable building automation system, demand response signals can trigger coordinated load shifts with minimal occupant disruption.

Audits are an essential part of energy management, as they provide a comprehensive assessment of a building's performance and identify opportunities for improvement. During an audit, an EM professional evaluates the consumption of a facility, typically an office building or industrial plant, and recommends cost-effective measures to reduce use and costs. These recommendations may include upgrading equipment, implementing energy-efficient practices, and addressing inefficiencies in the building's design or operations.

Building Automation Channel

Energy Management Systems & Smart Buildings

Energy Management Systems (EMS) enhance energy efficiency, reduce costs, and promote sustainability by monitoring, controlling, and analyzing energy use in buildings, enabling smarter resource allocation and a reduction in carbon footprint.

What are Energy Management Systems?

Energy Management Systems (EMS) are integrated platforms that monitor, control, and optimize energy consumption in facilities to enhance efficiency, promote sustainability, and achieve cost savings.

✅ Monitor and control energy use in real time

✅ Enhance efficiency, sustainability, and cost reduction

✅ Support compliance, reporting, and renewable integration

Energy management systems transform how we manage and consume electricity in industrial, commercial, and institutional power systems. By incorporating energy efficiency, building automation, smart grid technology, demand response, power monitoring, conservation, HVAC control, power optimization, renewable energy integration, and analytics, EMS offer a comprehensive EM for a more sustainable future.

By adopting Energy Management Systems, organizations can effectively manage consumption across their facilities, tracking energy usage in real-time to uncover opportunities for energy savings. This not only lowers operational costs but also reduces carbon emissions, supporting both financial performance and environmental responsibility.

Key Components of EMS

At the core of EMS systems are key components that work together to improve efficiency. These components include sensors, controllers, actuators, and communication networks that gather real-time data from various energy-consuming devices. This data is then analyzed to optimize the system's performance, ensuring cost-effective electricity use and minimal waste.

Energy Management Systems Overview

Aspect	Description	Examples/Applications	Benefits
Core Components	Sensors, controllers, actuators, communication networks	Building systems, industrial plants	Real-time data, automation, optimized performance
Building Automation	Integrated control of lighting, HVAC, and equipment	Smart buildings, commercial facilities	Lower electricity use, cost savings, comfort, productivity
Smart Grid Integration	Linking EMS with utilities and renewable energy	Solar, wind, microgrids	Balanced supply-demand, grid reliability
Demand Response	Adjusting consumption in response to grid conditions	Industrial load shifting, peak demand control	Reduced costs, grid stability, incentives
Analytics & AI	Data analysis, predictive maintenance, optimization algorithms	Dashboards, machine learning models	Efficiency, reduced downtime, proactive management
Sustainability Focus	Incorporation of renewable energy and conservation strategies	Solar panels, wind turbines, green buildings	Reduced emissions, compliance, and carbon footprint cuts

Building Automation and Efficiency

One of the primary ways energy management systems improve efficiency is through building automation. Building managers can monitor and control various aspects of their facility's electricity usage by integrating different systems such as lighting, heating, ventilation, and air conditioning (HVAC) control. This level of control enables them to make informed decisions, reducing power consumption while maintaining a comfortable and productive environment.

Smart Grids and Renewable Integration

Energy management systems also play a significant role in developing and implementing smart grids. These grids use advanced communication technologies and IoT devices to connect renewable energy sources, such as solar panels and wind turbines, with the electric utility. As a result, power supply and demand can be better balanced, leading to more efficient and reliable electricity distribution.

Demand Response and Conservation

Demand response is another crucial aspect of Energy Management Systems, allowing consumers to adjust their consumption based on real-time information from the electric grid. By participating in demand response programs, consumers can reduce their energy consumption during peak hours and benefit from lower costs.

Power conservation is a primary goal of energy management systems, which achieve this through various strategies, including efficient HVAC control, lighting optimization, and equipment scheduling. In addition, businesses and homeowners can significantly reduce their overall power usage by ensuring that power-consuming devices are used only when necessary.

Power optimization is a crucial aspect of EMS, achieved through the ongoing analysis of consumption patterns and equipment performance. Advanced power analytics tools can identify inefficiencies and recommend actions to maximize savings. These insights can help building managers create power-saving strategies, such as adjusting temperature set points, optimizing lighting controls, and scheduling equipment use.

One of the most exciting aspects of energy management systems is their seamless integration of renewable energy sources. By incorporating solar panels, wind turbines, and other clean power technologies, EMS can help businesses and homeowners reduce their reliance on fossil fuels and lower their carbon footprint.

The Role of IoT and AI

The role of IoT and AI in energy management systems is crucial, as they enable remote monitoring, real-time data analysis, and predictive maintenance. By utilizing IoT devices to collect data and AI algorithms to analyze it, EMS can identify inefficiencies and predict equipment failures, thereby ensuring optimal system performance.

By adopting EMS, businesses and homeowners can save money on their power bills and reduce their environmental impact. In addition, by optimizing power use, reducing waste, and integrating renewable energy sources, EMS leads to cost savings and contributes to the global effort to combat climate change.

Future Trends in EMS

The field of energy management systems is constantly evolving, with new trends and innovations emerging regularly. These innovations include integrating energy storage solutions, microgrids, and machine learning algorithms for even more precise power optimization.

Building Automation Channel

PLC Training Courses

PLC training courses build automation skills in ladder logic, SCADA, HMI, and motion control, with hands-on programming on Siemens and Allen-Bradley platforms, diagnostics, IEC 61131-3 standards, safety, and commissioning best practices.

What Are PLC Training Courses?

Programs teaching PLC programming, SCADA, HMI, and industrial automation with hands-on labs and commissioning.

✅ Ladder logic, function blocks, and IEC 61131-3 programming

✅ Siemens TIA Portal and Allen-Bradley RSLogix labs

✅ Fault finding, I/O wiring, safety, and commissioning

Our PLC training courses are designed to help students keep abreast of the latest PLC technologies and techniques available for industrial automation. These courses offer an excellent opportunity for students to ask specific questions and exchange ideas relating to their own applications. For context on modern plant connectivity, see the overview of industrial automation communication standards used in training.

Our PLC training courses are intended for experienced users and will give them greater knowledge of enhanced PLC functionality. Participants also review the benefits of industry networks to understand how network design impacts reliability.

We have three PLC training courses:

Before selecting a pathway, it helps to understand the hierarchical levels of industrial networks that underpin PLC architectures.

PLC Basics Training

PLC Training Basic - Our 12-Hour (2-Day) live online instructor-led industrial automation course is designed to instruct electrical control professionals on how to successfully integrate a PLCs into actual day-to-day industrial electrical processes. The course not only deals with the hardware and software, but all the surrounding systems that must be compatible to achieve a safe and reliable control system. This PLC Training Basic course is generic in nature and applies to all PLC types and manufacturers. We also examine key industrial network components so attendees can better integrate field devices.

PLC Training - Intermediate

PLC Training - Intermediate - Our 12-Hour (2-Day) live online instructor-led industrial automation course is designed to instruct electrical control professionals on how to successfully integrate a PLC into actual day-to-day industrial electrical processes. It not only deals with the hardware and software, but all the surrounding systems that must be compatible to achieve a safe and reliable control system. The curriculum compares common transmission methods in industrial networks to guide protocol selection.

PLC Training Course - Advanced

In the advanced module, we connect control strategies to advanced energy management concepts for measurable performance gains.

Our 12-Hour (2-Day )Advanced PLC Training Course is designed to give students a basic understanding of Programmable Logic Controllers and how PLCs function. This Advanced PLC training course will not make students PLC experts but rather give them a basic understanding of the PLC, the PLC’s functionality and limitations. The PLC training seminar is generic in nature and applies to all types and manufacturers. Case studies include applications like smart city automated level crossings where safety and uptime are critical.

Building Automation Channel

Energy Management Controls - HVAC Systems

Energy management controls optimize electrical systems via building automation, IoT sensors, BMS/SCADA integration, demand response, and load-shedding to improve power quality, reduce peak demand, and enhance HVAC, lighting, and motor efficiency in industrial facilities.

Understanding the Role of Energy Management Controls in Power Systems

Energy management controls are conservation tools implemented to control heating, energy consumption, lighting systems, heathing ventilation and air conditioning (HVAC) systems. Modern Direct Digital Control (DDC) systems, which can accurately control building systems, have become very cost-effective in recent years. As a result, they are replacing traditional manual and electromechanical building control systems in retrofitted buildings and being installed in almost all new commercial and institutional facilities. However, maximizing energy efficiency requires strategic facility management control methods for controlling the HVAC, power and communications systems. For a deeper look at modern strategies, the overview at advanced energy management explains integration trends across HVAC and lighting.

Regardless of the technology used, deciding which energy management control mode to apply is important. It is important to understand that these modes can be implemented using many available technology types. In many cases, simple on-off control is adequate and very appropriate. In other cases, the desired effect can be on with modulating controllers. The following are basic control modes. The accompanying diagrams will illustrate typical system performance. Practical frameworks for selecting modes are discussed in energy management systems resources available to facility teams.

The term system capacitance refers to the rate of response of a system to a stimulus. Systems with a large capacitance tend to resist change, and the effects of control are felt more slowly than with systems of smaller capacitance. Comparing the effect to a flywheel or relative mass is a good way to describe this concept. Another useful example to illustrate system capacitance is an instantaneous electric water heater (small volume of water) compared to a standard residential tank-type water heater. Upon energizing the heater elements, the water temperature in the tank unit changes much more slowly because it has more mass, and we say it has greater system capacitance. Understanding capacitance helps in tuning building energy management systems for stability under variable loads.

The term gain is a control term synonymous with sensitivity and is usually an adjustable amplification value used to tune the devices. For example, if a quicker response is desired for a small input change, the gain is increased in a stronger output reaction from the controller. These parameters are typically adjusted within a centralized building automation system interface to synchronize responses across equipment.

On-off Energy Management Controls

Also called two-position control, this rudimentary mode is used with either on or off equipment. A nominal setpoint exists but is only achieved in passing. A range of control values must be tolerated to avoid short-cycling the equipment, and temperature ranges are often fairly wide. In the case of equipment that cannot be modulated, this is often the only choice. The smoothness of control depends strongly upon the system capacitance; systems with very low capacitance can experience short cycling problems using two-position control. In practice, on-off strategies often reflect principles introduced in what is building automation guidance that relates simple control to overall system behavior.

Floating Energy Management Controls

This hybrid combination of on-off and modulating control is also called incremental control. As with on-off control, there is a control range (cut-in/cut out). However, unlike on-off control, floating control systems can maintain a mid-position of the controlled device instead of being limited to full-on or full-off. The controlled device holds its last position between the cut-in and cut-out thresholds. The process variable is not under control within this range, and it floats with the load until it crosses a threshold to get another incremental nudge in the correcting direction. This control is tighter than simple on-off control, and although tight than true modulating control, it is inexpensive and reliable. Equipment items from small HVAC terminal units to 1000 HP water chiller inlet vanes are controlled in this manner with good success. Note that floating control is limited to processes that change slowly, and floating control actuators are usually selected as slow-moving. Selecting floating control as part of a broader energy management approach can reduce wear while maintaining comfort within acceptable bands.

Proportional-only Control (P)

This is the basic modulating control and what most commercial pneumatic and analog electronic systems utilize. It is an error-sensing device with an adjustable gain or amplification. A control output is issued to regulate a process, and the magnitude of the output is directly proportional to the size of the error. This type of control is economical and reliable. However, a characteristic offset (residual error) is natural with this type of controller, and the size of the offset will increase with load. This offset occurs because an error must increase (further off setpoint) before an output increase can occur.

If the proportional energy management controls are too sensitive (gain set too high), the controller’s response will be excessive, and oscillation or hunting will occur. When this occurs, the controller output (and the equipment connected) will oscillate up and down, open and closed, etc., and the control action will not settle out. Training and commissioning within an organized energy management program help operators set appropriate gains and avoid persistent hunting.

Conclusion

Automatic energy management controls are useful for basic regulation and quality control of processes and environments. They can also be leveraged for energy savings through optimization. Properly applied, these systems are reliable and cost-effective. Returning to the chapter's intent, the stated purpose of this chapter was to focus on the application of automatic system controllers as a tool to achieve energy savings. The reader should review the titles of each section, reflect on the key topics taken away, and decide if the stated objective was met. It is hoped that the reader has gained insight into how automatic energy management controls can help achieve energy goals. Therefore, they will endeavour to put these systems to work, optimizing processes and saving energy.

From: Energy Management Handbook, 7th Edition, The Fairmont Press

Building Automation Channel

Certified Energy Manager

Certified Energy Manager (CEM) professionals optimize energy efficiency, manage sustainability programs, and reduce operational costs through advanced analysis, auditing, and strategic planning for industrial, commercial, and institutional facilities.

What is a Certified Energy Manager?

A Certified Energy Manager is a credentialed professional specializing in efficiency, auditing, and sustainability leadership across industrial, commercial, and institutional operations.

✅ Identifies and implements energy-saving strategies

✅ Ensures compliance with energy and environmental standards

✅ Improves performance through data-driven energy management

A CEM is an individual professionally accredited—typically by the Association of Energy Engineers (AEE) or an equivalent body—to design, implement, and monitor comprehensive efficiency programs. CEMs combine technical knowledge with practical management skills to assess power use, uncover inefficiencies, and recommend actions that deliver significant cost savings while lowering environmental impact. Certified Energy Managers often rely on advanced energy management strategies to optimize facility operations and ensure long-term sustainability across industrial and commercial systems.

The CEM credential, offered by the Association of Energy Engineers (AEE), is globally recognized and underpins the credibility and rigour that CEM professionals bring to energy management.

The CEM credential is globally recognized as a benchmark of excellence in energy management. It signifies a deep commitment to sustainable practices, carbon reduction, and responsible resource use. CEMs work in diverse sectors—manufacturing, commercial property, public institutions—where they conduct audits, oversee complex building management systems, and guide organizations toward operational excellence. An example of this is energy efficiency in Alberta hospitals and educational institutions, where they perform audits and oversee complex building management systems.

Earning the CEM certification represents a major professional milestone for engineers and technicians working in the energy sector. Through the premier Certified Energy Manager training program, participants gain the technical knowledge and analytical skills needed to manage power use effectively in any industrial plant or commercial facility. The program emphasizes practical applications—such as system optimization, cost reduction, and sustainability planning—preparing graduates to lead comprehensive power management initiatives that improve performance, reduce emissions, and strengthen organizational resilience.

Key Responsibilities of a CEM

Certified Energy Managers bring together engineering, economics, and environmental leadership to create measurable value. Their daily work includes:
- Conducting detailed energy audits and identifying opportunities for savings
- Developing and recommending facility-wide policies and improvements
- Analyzing utility bills, usage patterns, and benchmarking performance metrics
- Overseeing installation of high-efficiency systems and retrofits
- Providing expert guidance on compliance, certification, and sustainability reporting
Through these activities, CEMs integrate technology and strategy to help organizations reach both cost and carbon reduction goals. An essential component of a Certified Energy Manager’s work involves integrating building automation systems that monitor and control lighting, HVAC, and other critical building functions for peak efficiency.

Certification Requirements and Process

To become a CEM, candidates must meet specific educational and professional experience criteria established by AEE.

Education Level	Required Experience	Exam	Renewal Cycle
Bachelor’s in Engineering or related field	3+ years in energy management	4-hour CEM exam (130 questions)	Every 3 years
Technical Diploma	6+ years	Same	CEU-based
No degree	10+ years	Same	CEU-based

To improve overall performance and reduce energy waste, Certified Energy Managers frequently implement building energy management systems that provide data-driven insight into real-time power use.

Why Organizations Need Certified Energy Managers

Energy costs represent a major portion of operational budgets for most organizations. Hiring a Certified Energy Manager gives companies the expertise to pinpoint waste, manage consumption, and drive efficiency. CEMs introduce solutions such as LED lighting upgrades, advanced HVAC optimization, and building automation systems—all supported by data-driven measurement and verification.

Beyond cost reduction, their role extends into regulatory compliance and sustainability governance. CEMs help organizations qualify for government incentives, meet emissions reporting standards, and align with national and international codes such as ISO 50001 and LEED. Their influence goes beyond immediate savings—they shape a culture of efficiency that supports long-term environmental and economic resilience. Effective power optimization also depends on intelligent energy management controls that allow Certified Energy Managers to fine-tune systems for both cost savings and environmental compliance.

Becoming a Certified Energy Manager

To earn the CEM designation, candidates must satisfy education and experience requirements and pass a rigorous exam administered by the Association of Energy Engineers. The certification curriculum spans key areas including auditing, HVAC system optimization, lighting design, electrical distribution, renewable energy integration, and power economics.

Becoming a Certified Energy Manager demonstrates both technical proficiency and leadership capacity. Maintaining certification requires ongoing professional development, ensuring that CEMs stay informed about evolving technologies, new standards, and emerging sustainability practices. Many CEMs expand their expertise by pursuing related credentials—such as Certified Energy Auditor (CEA) or Certified Measurement and Verification Professional (CMVP)—to further strengthen their knowledge of power systems and performance verification.

Many CEMs are also involved in broader sustainability initiatives and may work on projects related to renewable energy integration or advanced energy storage solutions.

Impact of CEMs on the Energy Sector

As the global economy transitions toward cleaner and more efficient power systems, the role of the Certified Energy Manager has become indispensable. CEMs help organizations reduce greenhouse gas emissions, improve building performance, and achieve ambitious sustainability goals.

Their work delivers tangible outcomes—millions of dollars in annual savings, measurable power performance improvements, and compliance with environmental regulations. By combining technical expertise, analytical insight, and strategic vision, CEMs lead the transformation toward a more sustainable, efficient, and resilient energy future in buildings and industries around the world. By combining these technologies within a comprehensive energy management program, Certified Energy Managers help organizations achieve measurable reductions in power consumption, carbon output, and operating costs.