A resident of Texas gets to know that his ordered transformer will be delivered in 2026 – four years later than he placed the order. A windmill producer from Germany waits for the delivery that has been stuck due to the missing transformers. A contractor of a data center in Virginia has come across the information that his 100-MW AI facility is impossible to start functioning without a transformer that is not to be produced for the next two years. This is how this global transformer deficit manifests itself, a global crisis that has started to grow in 2021 and has reached the stage of a structural deficit by 2024.
The paper illustrates the current state of affairs in figures and states what causes this crisis on both sides of supply and demand and what impact it has on the power projects, prices, and strategies of buying around the world. It presents a manual explaining how to buy transformers in the market where the lead time is measured in years rather than weeks and where a supplier has a committed capacity instead of a well-known nameplate.
The global transformer crisis can be understood through two figures. Typical lead times for power transformers that have earlier been around 30-60 weeks now reached 115-130 weeks in 2024, with big units at 120-210 weeks (2.3-4 years). Pricing has increased by 60-80% since January 2020 due to the doubled price for grain-oriented electrical steel and 50% increase for copper. Demand from AI data centers, renewable projects, EV charging and deteriorating fleet lead to the demand jump, while supply shrank due to the capital-intensive nature of manufacturing, scarcity of skilled labor and reduced capacity in 2010s.
Current Status: The Shortage in Numbers
Lead time is known to be the best indicator of scarcity because it represents the ratio between orders and supply the best among every metric. According to the supply chain research made by Wood Mackenzie, the standard lead time of transformers will be 115–130 weeks in 2024, which is more than twice longer than the 50-week average in 2021. Large-scale transformers like substations and generator step-up units will have a lead time of 80-210 weeks and some manufacturers report that they simply have no orders they can accept.
| Transformer Class | Lead Time Before 2021 | Lead Time 2024 |
|---|---|---|
| Distribution transformers (100-2,500 kVA) | 4-12 weeks | 20-60 weeks |
| Medium power transformers (10-40 MVA) | 30-60 weeks | 80-160 weeks |
| Large power transformers (40-500 MVA) | 30-60 weeks | 120-210 weeks |
| Average, all classes (Wood Mackenzie) | ~50 weeks (2021) | 115-130 weeks |
The pricing situation is likewise severe. Average renewable transformer prices increased between 60% and 80% since the beginning of January 2020, with some requiring more than 80% in additional fees. Prices of these transformers have continued to climb even after the material prices began to stabilize as the companies involved keep taking advantage of the situation to replenish their profits and try to compensate for increasing costs of labor and transportation.
What the Shortage Looks Like in Practice
The concept of scarcity is not just theoretical, as it is evidenced by certain tangible occurrences. For instance, there is a large utility grid in Texas that needs to replace 15,000 transformers where no inventory of transformers is available and the orders run to 2026. The construction of the data centers in Texas was postponed partly because their high-voltage transformers could not be delivered. Additionally, in Germany, the wind farms were waiting for the step-up transformers while the wind turbines lay ready but disconnected. In India, the project schedules of renewable developers were delayed since they could not get transformers.
Underwriters are now considering the availability of transformers as a risk for the continuity of their businesses. According to the IF Insurers analysis, the lead time for large transformers has been changed from 12-24 weeks to 1-3 years, the price has increased by 70%, and the researchers conclude that if only one transformer fails in an installation it will lead to months of downtime since it will necessary to wait for the new one.
Causes, Part 1: The Demand Explosion
Demand growth has outpaced every capacity forecast made before 2021. Four demand drivers dominate:
| Demand Driver | Scale of Effect | Example |
|---|---|---|
| AI and data centers | Transformer demand up ~120% in 2024 alone | A 100 MW AI campus needs multiple large GSU transformers |
| Renewable buildout | PV plants need ~1.8x more transformer capacity per MW than coal | Wind and solar step-up units in the hundreds of thousands per year |
| EV charging | ~5-6 transformers per EV vs. 1-2 per ICE vehicle | 17 million+ new EVs globally in 2024 |
| Aging fleet replacement | US fleet past 35-40-year design life | ~15,000 Texas units alone need replacement |
The AI element is important due to the fact that it is the least predictable. One large-scale LLM training cluster consumes 70 megawatts of power, referring to the electricity use of a city of about 200,000 people. Every data center on the order of this one needs specially built high-voltage transformers which compete for the limited capacity of transformer manufacturing with standard power transformers. According to the 2024 IEA study, investment in the power system, including transformers and switches is expected to increase about two-fold by 2030 in order to meet the requirements set by electrification and renewable energy.
Causes, Part 2: The Supply Constraint
The capacity of the supply side to react is quite limited due to certain structural reasons. The construction of transformer production plants takes a lot of time and investment. It usually takes between three to five years to finish the construction and obtain the necessary permissions since transformer manufacture requires specialized professionals. A few manufacturing companies closed the production after the crisis in 2010, while others are working at maximum.
- The limited number of certified factories. The vast majority of power transformers manufacturers work in a few certified factories, and in the USA only about twenty percent of transformers are produced locally.
- The lack of qualified personnel. This is a job requiring proper training and finances.
- The problem of the individual design. The manufacture of transformers requires the individual design. This leads to additional difficulties in the production process.
- Hesitation to invest. The necessity of significant investments that may take decades to pay off makes many enterprises unwilling to invest.
- The expansion is slow but continues. There have been several announcements about new investments and openings of new plants. However, according to the estimates of Wood Mackenzie, the situation will not change significantly until the first years of 2020.
The Raw Material Crunch: GOES, Copper, and Steel
The raw materials have led to a situation where prices began escalating even before the demand has increased significantly. Grain-oriented electrical steel (GOES) – the type of core material – became more expensive in two times since the beginning of 2020 due to the market shortfall and the limited production during the pandemic. Copper demonstrated an increase of about 50% within the same time period, which in combination with GOES surge resulted in the increase of generator step-up transformer exposure to GOES costs by 4% – 15%.
| Raw Material | Price Movement Since Jan 2020 | Effect on Transformer Cost |
|---|---|---|
| Grain-oriented electrical steel (GOES) | +100% (doubled) | Core = 25-35% of material cost |
| Copper | +50% | Windings = 25-30% of material cost |
| Labor and logistics | +20-40% | Passed through in prices |
| Overall transformer prices | +60-80% | – |
As GOES and copper represent over 50% of the material cost of a transformer, any change in those costs is reflected in the final price. The prices have come down after hitting the high point in Q4 of 2023 but are still volatile, and suppliers are likely to maintain margins as orders are abundant.
The Profound Impact on Projects and Economies
The shortage’s consequences ripple far beyond longer lead times:
| Impact Area | Effet | Scale |
|---|---|---|
| Renewable project delays | Projects slip or halt for lack of transformers | Up to 25% of global renewables at risk |
| Grid reliability | Aging units run past design life, failures rise | US fleet majority past 35-40-year life |
| Data center builds | Campus energization delayed 1-2 years | AI capacity constrained in US, Europe |
| Industrial expansion | New plants wait on substation transformers | Manufacturing FDI delayed globally |
| Insurance & finance | Coverage terms tightened, premiums up | Business continuity plans rewritten |
For utility companies, the outcome is a delay in transformer replacement plans which leads to increased fleet risk. For project developers, obtaining transformers is no longer a minor factor in the time planning process – it has become a fundamental component in their activities. In terms of governments, the situation has become an energy security problem as industrial policies in the US, EU, and India are established to support domestic producing capabilities.
The Regional Picture: US, Europe, Asia
Different areas feel the effects of the shortage in contrasting ways. The United States meets almost all of its transformer demand from other countries (almost 80% of them), has been struggling for decades with replacement shortages and it has carried on construction in its factories which will give results only years later. Europe mostly sells transformers from a few factories whose distribution networks exceed 40% in age, EU has planned to spend 584 billion euros on grid upgrades which will increase the need for transformers in the near future. India has great domestic production but still experiences delays in projects due to transformer shortages and China is the biggest supplier and consumer in its territory; it’s exports in 2023 were twice as big as those in 2022 which makes it the biggest rate reached in 13 years, while the first three quarters of 2024 show an increase in exports by 46% compared to the last year.
This surge balanced the situation although Chinese manufacturers still remain the only suppliers for other countries.
How Buyers Should Respond
Since the lead time length of several years, the process of procurement is greatly improved:
- Start ordering as soon as project permits. Consider transformers as the element on the critical path with the largest lead time; place an order by concept time and not after financing.
- Standardize both rigorously and methodologically. Standardizing voltage classes, impedance, and tap ranges leads to short lead times, and, consequently, lower prices, while custom specifications lead to up to 25% increase in price and many months of lead time.
- Reserve capacity by engaging with suppliers. Establishing a frame agreement with suppliers and booked slots proves to be much more beneficial than discounts on prices in conditions of shortage.
- Buy for future-proofing and partial loading. Specifying losses according to realistic loading factors and tap range will save you from a second procurement cycle in 5 years.
- Check the credentials as well as the reality in factories. Obtain IEC 60076 type test report, audit the order book and check for the GOES supply contract, and witness the factory acceptance testing.
- Treat your spare part as capital. If your fleet requires it, buy them now; in 2027 it will be worth even more than it costs now.
Opportunities and the Manufacturers Who Can Deliver
The constraints in the supply chain have also led to the rise of different suppliers who are now able to deliver. Global market leaders in the sector – Hitachi Energy, Siemens Energy, and ABB – are in the number one tier with backlogs measured in years. Schneider Electric leads players working in the field of LV and digital grid. The companies are investing extensively but their expansion takes a significant amount of time. Chinese companies such as TBEA, Baoding Tianwei, China XD Group and some other mid-tier suppliers are the fastest growing newcomers in the market.
| Manufacturer | Positioning | Lead Time Reality (2024) |
|---|---|---|
| Hitachi Energy | Premium, global | 2-4 years for large units |
| Siemens Energy | Premium, global | 2-4 years for large units |
| ABB | Premium, broad | 1-3 years depending on class |
| Schneider Electric | Mid-premium, LV/digital | 6-18 months for distribution |
| TBEA / Baoding Tianwei / XD Group | Volume, export | 6-18 months for distribution; 1-2 years for power |
| Jiangsu Subian Electric Power | Competitive, IEC 60076-certified | 8-16 weeks for standard distribution units |
Mid-tier Chinese manufacturing becomes the viable solution for purchasers of certified distribution transformers and medium power transformers that need to comply with a schedule. Jiangsu Subian Electric Power is an example of such operations being recognized as certified by IEC 60076 and producing oil-immersed and dry-type transformers within reasonable periods of time of 8-16 weeks. This manufacturer caters to utilities, renewable energy developers, and industrial customers in Asia, Africa, Middle East, and Latin America.
Questions Fréquemment Posées
How long do transformer lead times actually take in 2024?
According to Wood Mackenzie, the average time for distribution transformers is between 115-130 weeks or more than two years. A distribution transformer has an estimated time of 20-60 weeks while a medium transformer has a time frame of 80-160 weeks, and large transformers takes between 120-210 weeks (2.3-4 years). Prior to 2021, most of the classes used to be shipped in the time of 30-60 weeks, with some companies not accepting orders anymore for certain classes.
Why have transformer prices risen so much?
Prices have increased by 60-80% since January 2020. Electrical steel for grain-oriented uses has seen prices double, copper has applied a 50 percent increase, and demand has outstripped every forecast. Even though raw materials dropped off from their peak in Q4 2023, suppliers have kept prices high due to their full order books and margin rebuilding.
Is the shortage caused by demand or supply?
Both are mutually supportive. Demand has surged, driven by AI data centers with a increase of ~120% in 2024, renewable projects being expedited, electric vehicle charging, and an old already operation fleet. On the supply side, there are both time and supply constraints as transformer manufacturing is capital-intensive, takes over 4 years to expand, and skilled labor cannot be hired quickly enough.
Will Chinese manufacturers fill the gap?
They already are. In 2023, the half-year figure has gone up by 2 times as against 2022, and the 9 months of the year 2024 have seen a rise of 46%. The Chinese factories provide the only material source of additional capacity available in the short run. Buyers must make sure that they check IEC 60076 certification and undertake the audit of the factory, as there is a wide range of quality in the mid-tier.
What should I do if I need a transformer this year?
Make sure your specification is uniform, ascertain that your vendor has committed to supply GOES, has a free production spot and keep in mind that only distribution class transformers can ship relatively quickly – realistically within a timeframe of 8-20 weeks from certified manufacturers in China. Large power transformers are, in fact, a multi-year planning item so consider redesigning your projects to use readily existing classes when possible and purchase spare ones as capital investment.
References
- Wood Mackenzie – Source of the lead time data (115-130 weeks average; 120-210 weeks for large units) and the estimate that up to 25% of renewable projects face delay risk.
- IEA Electricity 2024 – Analysis of grid investment needs and the equipment demand created by electrification and clean energy goals.
- US Department of Energy – Supply Chain Strategy – The US government’s assessment of domestic transformer manufacturing capacity and the ~80% import dependence.
- National Renewable Energy Laboratory (NREL) – Research on transformer fleet aging and replacement requirements in North America.
- IEC 60076-1: Power transformers – General – The international standard against which transformers are type tested, and a key verification requirement during procurement.
- Energy Institute Statistical Review of World Energy – Global data on electricity demand growth and grid buildout relevant to the shortage’s demand side.
- Jiangsu Subian Electric Power – IEC 60076-certified manufacturer offering distribution and medium power transformers with standard-design lead times of 8-16 weeks.
Conclusion
The global shortage of transformers is a situation that exists not temporarily but as a long-term reality: it is characterized by lead times of over two years on average, prices which are higher by 60-80% since 2020, and it will take long time until this shortage is resolved. Demand for transformers related to AI, renewable energies, electrical vehicles and fleet replacement will push the supply chain that cannot expand rapidly. As a result, today every project that uses transformers is a logistical issue as well as an engineering one. The key strategy in procurement is to start at the earliest possible stage, use standard designs, reserve capacity, and check certification of the goods. Being in a waiting market, a supplier who has a possibility to provide enough slots and certified goods becomes the major commodity in the industry. Jiangsu Subian Electric Power is an example of such supplier and provides IEC 60076-certified distribution and medium power transformers available in 8-16 weeks.