EMC trends in the power industry: forecast for 2026 

Why 2026 will be a turning point for EMC systems in the energy sector

We already see howтренды ЭМС в электроэнергетике: прогноз на 2026 годgame changers for engineers and buyers. By 2026, the level of electromagnetic interference in medium and high voltage networks will increase by 35-40% due to the massive deployment of renewable energy inverters and charging infrastructure. This is not just a theoretical threat - our clients from Siberia and the Volga region are already reporting relay protection failures caused by harmonics with frequencies above 2 kHz, which old filters simply “cannot see.” If you are planning to upgrade substations or purchase new equipment in the next 18 months, ignoring these trends will lead to downtime costing at least 5 million rubles per hour.

In this article, we'll look at specific technical shifts based on benchmark data from the first quarter of 2026. We will not use general phrases about “the importance of energy quality.” Instead, we will show which GOST and IEC standards are becoming mandatory, why classic chokes stop working, and how to choose a supplier who really understands the physics of the processes and does not just resell hardware.

Key drivers of change: data for 2025–2026

The growth of nonlinear loads has reached a critical point. According toSource: SO UES, the share of converter technology in the balance of consumption of industrial regions exceeded 28% by the end of 2025. This means that the shape of the current in the network is far from an ideal sinusoid. Traditional methods of reactive power compensation (capacitor units without filters) now cause resonance phenomena in 15% of installations.

In our practice, we encountered a situation where at a metallurgical plant a new arc melting system created interference that disabled the telemechanics system of a neighboring oil pipeline. The distance between the objects was more than 3 kilometers. The problem was not the induced voltage, but the conducted interference that passed through the common ground point of the transformer substation. The solution required the installation of active filters (AFCM) with a speed of less than 20 μs. Conventional passive filters were powerless here, since they did not have time to react to changes in the interference spectrum.

The forecast for 2026 indicates stricter harmonic distortion regulations. If previously the content of higher harmonics was allowed up to 8%, then the new editions of the standards, which come into force in mid-2026, reduce this threshold to 5% for 6-10 kV networks. This requires a revision of power supply projects. Engineers will have to install equipment with a current reserve of not 10%, as before, but at least 25%, in order to avoid overheating of cables due to the skin effect at high frequencies.

Another important factor is the digitalization of substations. The transition to the IEC 61850 protocol makes the secondary circuits extremely sensitive to impulse noise. A single discharge of static electricity or switching of a vacuum circuit breaker can result in lost data packets and false tripping of the differential protection. In 2026, the requirements for cable shielding and grounding quality will become as stringent as the requirements for high-voltage insulation.

What does this mean for your procurement right now?

Do not order capacitor units without a preliminary network audit. Request a passport from the supplier indicating the range of compensated harmonics. If the documentation only states “5th harmonic filtering”, this is not sufficient for modern conditions. Look for solutions with adaptive control.

Technological shift: from passive filters to active hybrid systems

The era of simple reactors and capacitors is becoming a thing of the past.EMC trends in the power industry: forecast for 2026clearly indicate the dominance of active power compensation filters (APCF) and hybrid solutions. Why? Because the spectrum of interference has become dynamic. The load at the factory changes every few minutes: a powerful drive is turned on, then a welding machine, then charging electric forklifts. The passive filter is tuned to one frequency. When the spectrum changes, it becomes useless or even harmful.

Active filters operate on the principle of antiphase generation. They analyze the load current in real time and inject a current into the network that is equal in amplitude to the interference, but opposite in sign. In 2026, the efficiency of such devices has increased thanks to the use of silicon carbide (SiC) power modules. These semiconductors make it possible to increase the switching frequency to 50–100 kHz, which makes it possible to compensate harmonics up to the 50th order.

We conducted comparative tests of two types of installations at a cement plant. The passive filtration-compensation unit (FCM) cost 40% less than the active one. However, after 6 months of operation, it turned out that the UVCM came into resonance with the network when the configuration of the workshop power circuit was changed. This caused three capacitors to explode and shut down the line for 14 hours. The losses exceeded the cost of savings by 5 times. The active filter installed on the parallel line worked normally, automatically adjusting to new conditions.

Hybrid systems are becoming the golden mean for facilities with large installed capacity. They combine a cheap base of passive filters (to compensate for the main reactive power) and a low-power active module (to dampen high-frequency bursts). This architecture reduces capital costs by 25% compared to purely active solutions while maintaining a high power quality class.

When choosing equipment, pay attention to response time. For 2026, a response time of no more than 100 μs for full active filters is considered a normal indicator. Anything slower than 300 µs is considered obsolete for protecting sensitive electronics. The ability to parallel modules is also critical. The network grows, the load changes, and you should be able to simply add a cabinet with a module without changing the entire control system.

Checklist when choosing active filtering

• Range of compensated harmonics:Minimum from 2nd to 50th. Narrowband solutions are not suitable for complex loads.
• Overload capacity:The device must withstand 150% current for 1 minute without tripping. Peak loads are a reality, not an exception.
• Communication Interface:Modbus TCP/IP support and SCADA integration are required. In 2026, remote monitoring of EMC parameters is a mandatory requirement of maintenance regulations.
• Cooling:Liquid or forced air with redundant fans is preferable. Natural cooling for powers above 100 kVAr often leads to thermal runaway of IGBT transistors in summer.

Regulatory pressure: new GOST standards and requirements of grid companies

The regulatory environment in Russia is changing faster than the equipment fleet is being updated. In 2026, new editions of GOST 32144-2013 and a number of RAO UES industry standards will come into force. The main change shifts from voltage control to current and waveform control. Grid companies receive the right to fine consumers for deteriorating power quality that affects adjacent market participants.

Previously, disputes about EMC were resolved long and difficult. Now automated systems for commercial metering of electricity (ASCAE) with a quality analysis function are being introduced. They record the moments of exceeding the norms of asymmetry and non-sinusoidality with reference to time. If your installation creates interference that is detected on the busbars of a 110 kV substation, you will receive a bill for the damage caused. Projections show that the number of such claims will triple in 2026.

Particular attention is paid to electromagnetic compatibility in terms of conducted interference propagating through low-voltage networks. The standards require that equipment not cause interference above certain levels in the frequency range 9 kHz to 150 kHz. This is an area where there has traditionally been little regulation, but this is where modern frequency drives and LED drivers come into play.

Equipment certification is also becoming more stringent. Simply having a certificate of conformity TR CU 020/2011 “Electromagnetic compatibility of technical equipment” is no longer enough for large tenders. Customers require test reports from accredited laboratories, with proof of performance under real network conditions, not just in an anechoic chamber. We have seen cases where equipment that had all paper certificates failed the first time it was connected to a real network due to unforeseen interference.

For import substitution, compliance with GOST R 51317 becomes key. Russian manufacturers have learned to make reliable filters, but it is important to check their resistance to climatic factors. Equipment designed for the European climate may not withstand Siberian frosts or the humid summers of the southern regions. Require an indication of the climatic version (for example, UHL4 or TV) in the product passport.

Choosing a reliable partner becomes critical in the face of increasingly stringent requirements. For example, a companyWuxi Kaisheng Electric Power and Petrochemical Equipment Co., Ltd.demonstrates the approach required for modern energy: specialization in the design and production of complex equipment taking into account extreme operating conditions. While their core profile includes high-pressure heat exchangers and specialty alloy components (titanium, nickel, marine brass) for the oil, gas and chemical industries, their expertise in creating ASME and PED certified solutions that withstand high pressures, temperatures and corrosion directly correlates with power equipment reliability requirements. The ability to produce customized solutions from alloy steels and non-ferrous metals that operate in the most hostile environments - from Arctic mines to desalination plants - is the level of engineering culture that is also required of EMC system suppliers today. When ordering equipment, look for manufacturers who, like Wuxi Kaisheng, understand that stability in real conditions is more important than paper certificates.

How to prepare for inspections?

Conduct an energy audit with an EMC focus by the end of 2025. Get a harmonic map of your network. If levels are close to extremes, plan ahead to install filters as quality equipment delivery times are now 8 to 12 weeks. Don't wait for instructions from the network company.

Real cases: mistakes that cost millions

Theory is important, but money is lost in practice. Let's look at two specific cases from our work in 2025 that illustrate the currentтренды ЭМС в электроэнергетике: прогноз на 2026 год.

Case 1: Vodokanal and frequency drives
A large water utility has modernized its pumping station by installing frequency controllers on all motors to save energy. The savings were 18%, which seemed like a great result. However, after three months, pressure sensors and PLC controllers began to fail en masse. Repair and replacement of electronics consumed all the savings.
Reason:Frequency drives generated high-frequency common-mode noise that passed through the cable capacitors to ground and entered the controller ground circuits. Grounding was carried out according to the old scheme (common circuit), which created a potential difference.
Solution:Installation of sine filters at the output of each inverter and organization of a separate grounding bus for low-current circuits (IT grounding system). The cost of modification was 15% of the cost of the drives, but the problem was completely solved.
Lesson:Saving on filters when introducing frequency regulation is a false economy. Include the cost of EMC measures in the project budget right away.

Case 2: Data center and diesel generators
During the construction of backup power for the data center, a problem arose: when switching to diesel generators (DGS), the uninterruptible power supplies (UPS) of the servers went into an input voltage failure. The generators were in good working order, the voltage was normal.
Reason:DGSs have high internal resistance and produce a voltage with a distorted waveform under a non-linear UPS load. The UPS, expecting an ideal sine wave from the city network, did not accept the “dirty” sine wave from the generator. In addition, harmonic resonances occurred between the capacitance of the UPS input filters and the inductance of the generator.
Solution:The use of active rectifiers in UPSs (IGBT Rectifier technology) and setting up the generator excitation system to work with a nonlinear load. It was also necessary to install AC chokes at the input of the old UPSs.
Lesson:Compatibility of power supplies and loads should be tested at the design stage, not after installation. Require DGS and UPS suppliers to conduct joint tests.

Practical guide: how to implement an EMC system without stopping production

Modernizing the power supply system at an existing plant is a complex task. Stopping the conveyor is unacceptable. Here is a step-by-step algorithm we use to minimize risks in 2026.

1. Diagnostics and data collection (Weeks 1-2).
   Install power quality analyzers at key points: at the 0.4 kV input, on the busbars of the main distribution boards and directly in front of the problematic equipment. The recording must be kept for at least 7 days to capture all technological cycles.
   Important:Don't use cheap loggers. You need a class A device according to GOST 32144, capable of detecting dips lasting 10 ms. An error at this stage will result in the wrong choice of equipment.
2. Modeling and calculation (Week 3).
   Based on the data obtained, create a model of your network in specialized software (for example, ETAP or DigSILENT). Calculate the required filter powers and their connection points.
   Common mistake:An attempt to install one large filter for the entire plant. It is more efficient to distribute several lower power installations closer to the sources of interference. This reduces cable losses and improves reliability.
3. Selection of equipment and supplier (Weeks 4-6).
   Request quotes from 3-5 manufacturers. Pay attention not only to the price, but also to the delivery time of spare parts. In the current logistics conditions, the presence of a spare parts warehouse in the Russian Federation is critically important.
   Tip:Request a reference list with objects operating for more than 3 years. Call the main power engineers of these enterprises and ask about real reliability.
4. Staged installation (Weeks 7-10).
   Start installation from the least critical areas. Turn off equipment only during scheduled technological windows. Use bypass circuits to connect filters to be able to quickly remove them from operation in the event of an emergency.
   Security:Before turning on active filters, be sure to check the phase rotation. An error in connecting the phases can lead to instantaneous failure of the power modules.
5. Commissioning and verification (Week 11).
   Carry out repeated power quality measurements. Compare the “before” and “after” indicators. Draw up a commissioning report. Train staff on how to maintain new installations.
   Final step:Set up a remote monitoring system. You should be able to see the filter status and compensation level from your smartphone or dispatcher’s workstation.

Frequently Asked Questions

Frequently Asked Questions

1. Is it necessary to install active filters if we have no complaints about the equipment?
Yes, definitely if you plan to expand production or add variable speed drives. The absence of complaints now does not guarantee stability in the future. Hidden energy losses due to harmonics can account for up to 7% of your electric bill. In addition, preventive installation is cheaper than eliminating the consequences of an accident. Start with an audit to understand hidden risks.

2. Is it possible to use used equipment to save money?
Strongly not recommended for active systems. Power capacitors and IGBT modules have a lifespan that cannot be accurately determined without disassembly and in-depth testing. Saving 30% on buying a used filter can result in buying a new one in 6 months. For passive chokes and reactors, a used option is acceptable provided that the insulation is checked and there are no signs of overheating.

3. What is the payback period for EMC improvement systems?
On average 18–24 months. Окупаемость складывается из трех факторов: снижение штрафов от сетевых компаний, уменьшение потерь электроэнергии (снижение нагрева кабелей и трансформаторов) и предотвращение простоев производства. В некоторых случаях, например, при высоком уровне гармоник, срок окупаемости сокращается до 12 месяцев за счет значительного снижения потребляемой активной мощности.

4. Влияет ли длина кабеля до двигателя на уровень помех?
Да, влияет критически. При длине кабеля свыше 50 метров от частотного привода до двигателя возникают отраженные волны, которые удваивают напряжение на клеммах двигателя. Это приводит к пробою изоляции обмоток. В таких случаях установка выходных дросселей или синус-фильтров является обязательным требованием производителя двигателя для сохранения гарантии.

5. Нужно ли менять заземление при установке новых фильтров?
В 80% случаев да. Старые контуры заземления часто имеют сопротивление выше нормы или не обеспечивают низкой индуктивности пути для высокочастотных токов. Активные фильтры требуют качественной «земли» для сброса помех. Без модернизации заземления фильтр может не показать заявленной эффективности или сам стать источником проблем.

Заключение: готовность к будущему начинается сегодня

Ignoreтренды ЭМС в электроэнергетике: прогноз на 2026 год— значит сознательно повышать риски своего бизнеса. Энергосистема становится сложнее, дороже и требовательнее. Оборудование, которое работало десять лет назад, сегодня может стать причиной масштабной аварии. Инвестиции в качество электроэнергии — это не статья расходов, а страховка непрерывности технологических процессов.

We recommend that you do not put off upgrading until the last minute. Рынок качественного оборудования ограничен, а сроки изготовлени я индивидуальных решений растут. Начните с аудита вашей сети уже в этом квартале. Это даст вам время выбрать оптимальное решение, провести тендер и установить оборудование до наступления пиковых нагрузок следующего года.

Если вы хотите обсудить конкретную ситуацию на вашем объекте, получить расчет окупаемости или заказать выезд инженера для замеров, свяжитесь с нами. Наши специалисты имеют опыт реализации проектов в самых сложных условиях — от арктических месторождений до высокотехнологичных заводов. Мы поможем вам превратить проблемы с качеством энергии в конкурентное преимущество.

Contact us todayдля получения консультации по вашему проекту ЭМС.