Reduce electricity costs and CO2 emissions without compromising performance. Increase your energy efficiency with ELSA®!
Based on state-of-the-art variable transformer technology, you will see a noticeable reduction in your electricity costs from day one. This is ensured by a centrally and digitally controlled, infinitely variable reduction of the output voltage, compliant with IEC61558-2-26 and IEC 60038. This maximises the ELSA® savings potential of up to 10%.
Fully automatic operation compensates for voltage fluctuations in the mains, while an internal full bypass also guarantees an uninterrupted power supply without any loss of performance for downstream consumers.
Thanks to permanent real-time data monitoring, you can keep an eye on your power consumption and electricity cost savings at all times. Last but not least: The purchase of an ELSA® is also eligible for BAFA-funding.
Please contact us. We look forward to hearing from you.
With our ELSA® system, we offer you a highly efficient energy-saving device featuring proven ring transformer technology that can help you achieve electricity cost savings of up to 10%. ELSA® also offers further advantages for an optimised and secure power supply.
Security before investment: Measurements taken over several days in accordance with EN 50160 & VDE 2055-1 show your specific savings potential with an ELSA®- system.
Stepless reduction from 253V to 207V without loss of power – flexibly adjustable, with ELSA®-technology ‘Engineered & Made in Germany’.
Uninterrupted voltage thanks to internal bypass – low maintenance, efficient and expandable with IoT or storage for grid bridging.
Cloud monitoring with Eco2ELSA®-app – intuitive visualisation, individual notifications and secure storage of all energy data in Germany.
The ELSA® energy saving system is available in customised power classes between 250A and 3,200A. It can also be flexibly integrated into existing buildings thanks to the 2-cabinet concept. The ELSA® is compatible with the feed-in of mains, PV and CHP electricity,
and complies with mains voltage standards in accordance with IEC EN 60038.
The system is continuously controlled and regulated automatically between 253V and 207V in accordance with IEC EN 61558-2-26 via a PLC.
To ensure safe operation at all times, the system is continuously monitored for temperature, voltage and power.
Please contact us. We look forward to hearing from you.
Please contact us. We look forward to your enquiry.
In our FAQ section, we have compiled the 33 most important questions and answers regarding ELSA® technology for you. Here, you can learn everything about the mode of operation, the economic benefits, and the simple integration into your company.
ELSA® is an energy-saving system designed to reduce electricity consumption in commercial and industrial power grids. It optimizes the grid voltage through automatic voltage reduction, thereby reducing energy consumption.
ELSA® uses adjustable transformer technology to continuously optimize the grid voltage with a control accuracy of 0.3% and a control speed of 100 ms/V. This reduces the electrical voltage to the optimal required level without compromising the performance of the connected devices.
Depending on the application and load profile, savings of up to 10% on electricity costs are possible. Cost-effective, sustainable energy efficiency with full power and performance.
Positive power quality effects, as unwanted harmonic disturbances on the grid side are effectively attenuated due to the high series inductances. A reduction in reactive power also increases electrical efficiency and thus lowers electricity costs.
By using an ELSA® energy-saving system with the certified EMS eco2lot-ELSA, you also lay the foundation for energy efficiency certification of your facility according to DIN EN ISO 50001.
Especially for companies with:
• high electricity consumption
• long operating hours
• numerous motors, lighting, cooling, or heating
The system is particularly suitable for commercial establishments such as:
• Supermarkets and shopping centers
• Hotels and office buildings
• Logistics centers
• Healthcare facilities
• Manufacturing facilities
• Cold storage facilities and data centers
• Industrial laundries
• Grain mills and bakeries
• Breweries and beverage bottlers
The systems are designed on a project-specific basis and can also handle high power ratings. The system concept is based on a standardized series for the current range from 160A to 3.200A, compactly housed in Rittal enclosures.
The ELSA® is centrally integrated behind the electrically fused main distribution panel in the company’s connection room.
No, because the ELSA® system has an internal bypass that switches over autonomously and immediately in the event of a malfunction in normal operation, thereby ensuring an uninterrupted power supply to the connected loads at all times.
No. The system merely reduces the mains voltage, compliant with standards, to an optimal range and does not affect the operation of the connected loads.
Yes. The system always regulates in compliance with standards within the approved voltage range, thereby protecting connected loads and extending their service life.
ELSA® operates fully automatically and continuously regulates the voltage between 253 V and 207 V in accordance with DIN EN 61558-2-26 via a digital control system (PLC) that detects mains fluctuations and adjusts the voltage accordingly.
Yes. Uninterrupted, continuous measurement in accordance with DIN EN 50160 of all grid and consumption parameters—such as power, voltage, current, THDi, and CosPhi—enables real-time monitoring on a PC or mobile phone. The measurement data analysis also displays your individual savings results in accordance with VDE-AR-E 2055-1.
The investment typically pays for itself within 5–8 years, depending on subsidies, consumption, electricity prices, and load profile.
Yes. The system itself is eligible for BAFA*) subsidies. Approval and the amount of the subsidy also depend on the applicant meeting the requirements.
*) German Federal Office for Economic Affairs and Export Control
No. However, optionally, a standardized, multi-day grid and energy analysis can be conducted in advance upon request to evaluate the profile of the grid and consumption parameters and determine a projected savings potential.
Generally, no. ELSA® systems can usually be installed and connected indoors, in existing utility rooms, with minimal effort and without the need for additional construction work.
The BAFA-certified energy management system (EMS) eco2lot-ELSA®, developed specifically for ELSA® by our partner BS-Systeme, is integrated into the ELSA® system as standard.
A bidirectional connection with the ELSA® is ensured at all times via a UMTS/5G or LAN connection.
Primarily, real-time data collection, analysis, and control of the energy-saving system. A visualized real-time monitoring function allows data monitoring on a PC or mobile phone.
In addition, EMS data analysis provides insight into further energy efficiency and energy-saving measures within the company’s electrical system.
Yes. The energy data measured in the ELSA® system is securely stored in a German cloud solution and can be accessed at any time by authorized ELSA® operators for analysis and evaluation.
Yes. The system is Modbus/TCP-compatible and can also be integrated into another existing EMS via an interface for data transmission.
Yes. ELSA® continuously monitors voltage, temperature, and power and features protection functions against overload and short circuits.
An integrated full bypass ensures that the power supply remains fully guaranteed without interruption.
The system requires minimal maintenance and is designed for long-term, reliable operation. Maintenance is limited to a quarterly visual inspection and servicing of the control transformers every two years.
By reducing electricity consumption, CO₂ emissions and a company’s ecological footprint are also reduced.
Yes. It can also be operated in grids with PV systems or CHP (combined heat and power unit) feed-in and combined with an energy storage system.
Yes. It complies with all applicable VDE and DIN/EN standards as well as grid guidelines. It operates in accordance with DIN EN 61558-2-26 and DIN EN 60038. All mechanical and electrical components of the system are sourced from German or European quality suppliers; development and cabinet manufacturing are 100% Made in Germany.
Yes. Many ELSA® systems have already been successfully installed in industrial and commercial settings.
1. Initial consultation
2. Grid and consumption analysis
3. Cost-effectiveness analysis
4. Planning, quotation, and grant application*)
5. Installation, commissioning
6. Monitoring and energy savings
*) Grant application service available only in Germany
The effort required on your part is minimal. We handle most of the analysis, planning, and grant application process, so your employees will hardly be burdened. Proven checklists ensure clarity upfront and prevent surprises.
Currently, our delivery times are approximately 12 weeks.
We’re happy to assist you personally. Please call or email us:
By phone at 040 53420-0 or by email at elsa@mbs-mp.de
Understand the technology behind your potential savings: our glossary provides a concise and easy-to-understand explanation of the key terms relating to ELSA® and shows you how you can immediately and significantly improve your energy efficiency and cost-effectiveness.
The German government actively supports your investment in Germany. With attractive subsidies, your initial investment is significantly reduced—an additional financial benefit right from the start. Government funding through the BAFA, the Federal Office of Economics and Export Control, for energy-efficient measures. Eligibility is subject to specific technical and economic criteria and significantly reduces investment costs upon approval.
Maximum operational reliability guaranteed: Even in the unlikely event of a malfunction, your power supply continues uninterrupted. The ELSA® internal switchover, which ensures an uninterrupted power supply in the event of faults. Bypass mode guarantees high operational reliability, as loads continue to be supplied directly from the grid even in the event of a fault.
Keep track of your energy data at all times—securely stored in Germany and accessible from anywhere. This way, you maintain full control over your consumption. An external data storage solution where measurement data is securely stored and accessible. It enables location-independent access as well as long-term analysis and optimization of your energy consumption.
Whether you’re a small-to-medium-sized business or a large enterprise: ELSA® is tailored precisely to your needs. This ensures you receive a custom-fit solution with maximum savings. The electrical power rating for which the ELSA® system is designed ranges from 160A to 3.200A. It determines the system’s sizing and directly influences its savings potential and scope of application.
ELSA® shows you where savings potential lies. This allows you to further increase your energy efficiency step by step. The analysis of energy and grid data to optimize your energy system. It forms the basis for informed decisions in energy management.
Maximum precision ensures that you achieve maximum savings—while maintaining full system performance. The precision of the automatically controlled voltage adjustment is approximately 0.3%. High accuracy is crucial for maximizing savings without affecting consumers.
ELSA® reacts instantly to changes in the grid. This keeps your power supply stable and optimally adjusted at all times. The speed of the automatically controlled voltage adjustment is approximately 100 ms/V. It enables a rapid response to mains fluctuations and ensures stable operating conditions.
The toroidal (ring-core) control transformer is the heart of the system. It operates efficiently and reliably. It ensures continuous optimization without interfering with your processes. A transformer for stepless voltage regulation. It forms the central element of ELSA® technology and ensures low-loss continuosly variable voltage adjustment.
ELSA® noticeably improves the efficiency of your electrical systems. The result: fewer losses and additional cost savings. The CosPhi, the ratio of active power to reactive power, is optimized by ELSA®. A higher CosPhi reduces grid losses and helps avoid additional costs due to reactive current.
With ELSA®, you lay the foundation for important, recognized energy certifications. This strengthens your position in the market and against the competition, with customers, partners, and authorities. This is the standard for energy management systems aimed at improving energy efficiency. Integrating ELSA® can help companies meet this standard and achieve certifications.
The standard describing voltage quality in public power grids. It defines limit values for voltage fluctuations, which are actively maintained by ELSA®.
The standard for safety and requirements for transformers, in accordance with which ELSA® operates. It ensures that the system can be operated reliably and safely in an industrial environment.
Greater efficiency means lower costs. ELSA® ensures that your energy is used optimally—without any losses. The efficiency of electrical energy conversion, enhanced by ELSA®. Higher efficiency means lower losses and, consequently, lower operating costs.
Up to 10% lower electricity costs—without compromising comfort or performance. ELSA® saves energy without changing your processes. A reduction in electricity consumption of up to 10% is made possible by optimized grid voltage. The actual savings depend on the load profile as well as the type of loads and their voltage tolerance.
The integrated system makes energy efficiency measurable and controllable. You identify potential savings and leverage them specifically for further reductions: energy monitoring and controlling. The eco2lot-ELSA®-EMS is used to collect, analyze, and control energy data profiles and energy consumption. It forms the basis for data-driven decisions to increase energy efficiency.
ELSA® stands for Electricity Saver and is a registered trademark. Your smart solution for sustainable cost reduction. ELSA® automatically optimizes your line voltage, thereby permanently reducing your energy consumption. ELSA® is a technical system with automatic voltage optimization designed to reduce electricity consumption. It operates continuously in normal mode and dynamically adapts to grid fluctuations without affecting processes.
With ELSA®, you can significantly and sustainably reduce your electricity consumption. This not only eases the strain on your budget but also on the environment. The amount of electrical energy (in kWh) reduced through the use of ELSA®.
Interference in the power grid is reduced with ELSA®. This ensures more stable processes and extends the service life of your equipment. Unwanted interference signals in the power grid are caused by nonlinear loads and can impair devices or their function, or cause costly losses.
Electrical power grid in industrial applications. These grids are often characterized by high loads and complex consumer structures.
Fast, straightforward, and with minimal effort: ELSA® integrates seamlessly into your existing infrastructure. The ELSA® system is installed downstream of the main distribution panel in the facility. Integration typically requires no major structural modifications and causes minimal operational disruption.
ELSA® adapts precisely to your consumption patterns. This allows you to achieve maximum savings exactly where they occur. The load profile shows how energy consumption changes over time, which is crucial for identifying potential savings. A stable and predictable load profile increases the efficiency of voltage optimization.
In addition to saving electricity, ELSA® also improves power quality. This protects your equipment and reduces operational disruptions. This electrical property helps mitigate grid disturbances. In particular, it reduces harmonics, thereby improving grid quality.
Minimal effort, maximum reliability. ELSA® is low-maintenance and designed for long-term use. Scheduled, regular inspection and servicing of the system, e.g., visual inspection, transformer maintenance, increases the system’s service life and operational safety.
ELSA® automatically ensures optimal voltage—not too high, not too low. This saves energy and protects your equipment. The electrical voltage in the power grid, optimized by ELSA®. Excessively high voltage often leads to unnecessary energy consumption, increased risk of failure, and reduced service life for many connected electrical devices.
Seamless integration: ELSA® can be easily integrated into existing systems and expands your digital infrastructure. This communication protocol is used for the data-technical integration of ELSA® into other systems. It enables standardized and vendor-independent integration into existing energy management solutions.
Full transparency regarding your energy consumption. You immediately identify savings and can make informed decisions. Used to monitor energy consumption and grid quality. Regular evaluations help verify savings and identify further optimization opportunities. A detailed analysis of the consumption and energy profile enables targeted efficiency measures beyond voltage optimization.
The ELSA® system pays for itself faster than many people think—often within just a few years. After that, you’ll enjoy lower energy costs for the long term and boost your energy efficiency sustainably. The period during which the investment in the ELSA® system pays for itself through savings is typically 5–8 years. It depends largely on the load profile, electricity prices, and potential subsidies. A precise economic analysis improves the reliability of the forecast.
Intelligent automation takes over complete system control for you. You save energy—without any additional effort. The digital control unit for automatic regulation of ELSA® variable transformers. The PLC continuously processes measurement data and controls the system precisely and reliably.
Better power quality means fewer outages, less wear and tear, and greater efficiency—real added value for your business. The quality of the electrical supply is improved by ELSA®. High and stable power quality increases the service life of systems and reduces disruptions and the risk of downtime during operation.
Hidden energy losses are a thing of the past. ELSA® optimizes your energy flow and ensures that you only pay for what you actually use. Electrical power that is not converted into useful work and can be reduced by ELSA®. Reducing reactive power lowers both commercial electricity bills and the load on the power grid, thereby improving the overall efficiency of electrical systems.
Integrated, flexible connectivity, designed for maximum control and the highest operational reliability. Whether on-site or remote—your data is always available with our router communication technologies for data transmission. They enable a stable and secure connection for monitoring and remote access. Routers with Wi-Fi functionality are available on request as an option.
Real-time transparency: You can see at any time how much energy you are saving—live on your PC or smartphone. Continuous monitoring of energy and grid parameters in real time. This allows deviations to be detected immediately and further optimization potential to be quickly identified.
With ELSA®, you actively reduce your CO₂ emissions and thus make a valuable contribution to decarbonization. This strengthens your sustainable image and makes your company future-proof. Responsible use of resources, climate protection, environmentally conscious business practices.
A clean power supply reduces losses and protects your equipment. ELSA® actively contributes to better power quality. The measure of unwanted current distortion caused by harmonics. A low THDi value indicates better power quality and lower losses.
Maximum safety and quality “Made in Germany.” ELSA® meets all relevant standards for worry-free operation. The German electrotechnical standards that ensure safety and quality. Compliance with these standards is a prerequisite for the safe operation of electrical systems.
Lower voltage, same benefits: Many devices do not require full line voltage. This is exactly where ELSA® comes in, saving you money by reducing the line voltage to an optimal level within the standard range for energy savings. Many loads operate efficiently within the standard range of 253 V to 207 V even at lower voltages, creating potential for savings.
With ELSA® and eco2lot, you can optimise your power supply and significantly reduce your carbon footprint.
