One amorphous transformer = saves 13,000 yuan per year?
You may never have seen what it looks like, but every day you’re enjoying the convenience it brings—from the lights turning on at home to the air conditioning running in office buildings and the electricity transmitted from new-energy power stations—all of which rely on transformers, these “power transit stations.”
Yet few people realize that these quietly operating devices are actually major energy consumers in the power system. According to statistics, transformer losses nationwide account for about 5% of total electricity consumption, with no-load losses—energy consumed continuously even when there’s no load—making up as much as 60% to 70% of those losses. This amounts to wasting tens of billions of kilowatt-hours of electricity every year, which is not only environmentally unfriendly but also drives up electricity costs.
The key to cracking this challenge lies in the “energy-saving dark horse” we’re going to talk about today—the amorphous transformer. What makes it an ideal choice for upgrading the power grid? And just how much tangible benefit can it bring? After reading this article, you’ll have it all figured out.
First, let’s get clear: What exactly makes amorphous transformers “special”?
The core difference between amorphous transformers and conventional silicon steel transformers lies in the material used for their “heart”—the iron core.
Traditional transformers use silicon steel sheets, whereas amorphous transformers employ “amorphous alloys”—an amorphous metallic material produced via rapid cooling technology. It’s as if the molten metal were instantly “frozen,” leaving insufficient time for it to form a regular crystalline structure, thereby giving it magnetic permeability that far exceeds that of silicon steel.
To use a simple analogy: If we compare power transmission to “water flowing through a pipe,” the iron core of a conventional silicon steel transformer is like a pipe covered with limescale—resulting in high water resistance and significant energy loss. In contrast, an amorphous alloy core is like a smooth, unobstructed new pipe, allowing electricity to flow “smoothly” with naturally much lower losses.
Specifically, it has three core advantages, each of which addresses a key pain point in energy conservation:
No-load losses are reduced by as much as 70% to 80%—this is its most significant highlight. Take, for example, a 2,000 kVA transformer: the no-load losses of a conventional silicon steel model are around 2.8 kW, whereas those of an amorphous alloy model are only 0.75 kW—a difference that’s immediately obvious. Keep in mind that transformers operate continuously 365 days a year; even when there’s no load, they still consume power. Over time, this difference in no-load losses can add up to a substantial sum.
No-load current reduced by 85%: Lower current losses not only reduce the load on the power grid but also decrease equipment heating, thereby extending the transformer's service life. The designed service life can exceed 30 years, making this equipment more durable than conventional models.
High-efficiency adaptation across all operating conditions: Not only does it save energy under no-load conditions, but it also achieves an efficiency of over 98.95% even under light-load conditions—for example, in low-load scenarios such as industrial parks or rural power grids—thus addressing the traditional transformer’s shortcoming of “inefficient operation under light loads” and offering enhanced adaptability.
Let’s do the math: How much can you save in a year by switching to an amorphous transformer?
Simply talking about advantages isn't very intuitive—let's crunch some real data to calculate a "carbon reduction and energy-saving account" and see just how cost-effective amorphous transformers really are👇
Taking the commonly used 2000 kVA amorphous transformer (S15 model) in industry as an example, let’s compare it with a conventional silicon steel transformer (S9 model):
Annual power savings: (2.8 kW - 0.75 kW) × 8,000 hours (annual operating hours) = 16,400 kWh;
Annual economic benefit: Calculated at an industrial electricity rate of 0.8 yuan per kilowatt-hour, 16,400 kWh × 0.8 yuan = 13,120 yuan;
Annual carbon reduction: Calculated based on an industrial electricity carbon emission factor of 0.82 kg CO₂ per kilowatt-hour, 16,400 kWh × 0.82 kg = 13.45 tons of CO₂, equivalent to the carbon sequestration capacity of planting 74 trees.
If it’s an industrial park with 100 of these transformers, after replacing them all:
The total annual power savings amount to 1.64 million kilowatt-hours, the total annual carbon reduction reaches 1,345 tons, and the total annual revenue exceeds 1.31 million yuan! Whether it’s the enterprise or the power grid, this is a win-win situation with no risk of loss.
With the dual boost of policy and technology, amorphous transformers have now fully “gone mainstream.”
The widespread adoption of amorphous transformers relies not only on their inherent strengths but also on the dual boost from national policies and technological breakthroughs. Today, they have evolved from a “niche choice” into an “essential piece of equipment.”
At the policy level: The government is mandating and strongly promoting upgrades and renovations, with subsidies available.
The National Development and Reform Commission and eight other departments have already jointly issued a document clearly requiring the acceleration of energy-saving upgrades and renovations of power transformers. The document specifies that by 2025, the proportion of newly installed high-efficiency and energy-saving transformers should reach over 80%, reducing annual electricity losses by approximately 16 billion kilowatt-hours—equivalent to saving 4.8 million tons of standard coal.
Among these, amorphous transformers—being the core product category for high efficiency and energy savings—have been included in the key promotion list. In the State Grid Corporation of China’s “15th Five-Year Plan” distribution network renovation, the penetration rate of amorphous transformers is steadily rising toward over 40%, while aging, high-energy-consuming transformers (such as models S7 and S8) are being phased out gradually.
In these scenarios, amorphous transformers have become the “standard configuration.”
With the maturation of technology and supportive policies, amorphous transformers have already permeated every aspect of our lives, and their advantages are particularly evident in these scenarios:
Grid upgrade As a core choice for urban distribution networks and rural grid upgrades, the 110kV high-capacity amorphous transformer has entered mass production. Its no-load loss is more than 60% lower than that of conventional equipment, contributing to the green transformation of the power grid.
New energy sector The step-up transformers used in photovoltaic and wind power plants are tailored to the intermittent nature of new energy generation, thereby enhancing power conversion efficiency. Additionally, amorphous transformers for offshore wind farms can withstand salt-spray corrosion and boast an insulation lifespan that is three times longer.
Industrial scenarios High-energy-consuming enterprises such as steel, cement, and chemical plants, as well as data centers and commercial complexes—whose loads fluctuate significantly and whose electricity consumption lasts for long periods—can fully leverage the all-condition energy-saving advantages of amorphous transformers, thereby reducing their electricity costs.
Transportation sector After Shenzhen Metro Line 16 adopted amorphous traction transformers, energy consumption dropped by 7.2%, and noise levels were reduced by 12 decibels—resulting in both energy savings and environmental protection. Transformers used in fast-charging stations for new-energy vehicles are also increasingly adopting amorphous materials, thereby shortening charging times.
The future looks promising: Amorphous transformers offer more than just energy savings.
As the dual-carbon goals are advanced and a new power system is being built, the development of amorphous transformers holds even more exciting prospects:
On the one hand, with continuous technological advancements and AI-powered innovation in new material development, the saturation magnetic induction of amorphous alloys has been further enhanced, while losses continue to decline. Moreover, these alloys can now be integrated with intelligent monitoring systems, enabling remote fault diagnosis and predictive maintenance—thus making equipment operation safer and more efficient.
On the other hand, as application scenarios continue to expand—from traditional power grids to emerging fields such as solid-state transformers, hydrogen electrolysis, and maglev power supply—amorphous materials are playing a pivotal role. By 2030, it is projected that the penetration rate of amorphous transformers in automotive and new-energy sectors will surpass 60%, making them a key piece of equipment driving the energy transition.
Conclusion: Small iron heart, great energy.
Although amorphous transformers don’t have a dazzling appearance, they embody the concept of green development by saving every single kilowatt-hour of electricity. Despite lacking flashy publicity, they deliver tangible benefits and have become an “excellent helper” for businesses in reducing costs and boosting efficiency.
From energy savings in a single device to the upgrading of an entire industry and the transformation of the energy system as a whole, the widespread adoption of amorphous transformers is a vivid microcosm of “green development” in the era of dual carbon goals.
We believe that driven by the triple forces of policy, technology, and market, this “invisible champion” in power conservation will find its way into more and more scenarios, injecting even more energy into our green lifestyle ✨
👉 Further reading: If you’d like to learn more about selection tips for amorphous transformers or need a customized energy-saving solution, feel free to contact us anytime!
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Anyang Kayo Amorphous Technology Co., Ltd. was established in 2011 with a registered capital of 20 million RMB. It is a high-tech enterprise focused on the research, development, production, sales...
