The 30 second version
- AMSC builds the equipment that keeps voltage steady where big new loads such as mines, chip plants and heavy industry connect to the grid. This Grid business is 81% of revenue.
- The business is at Flight. What is changing is the size of each sale: customers now buy the whole connection from AMSC as one package, not a few separate boxes.
- The evidence: orders of more than $130 million in the June quarter against $94.1 million of revenue, and more than $100 million even without a record $25 million mine order.
- The test comes after the close on Wednesday November 4. We want revenue of $88 million or more, gross margin of at least 28% and orders at least equal to revenue.
- The thesis breaks if revenue misses the $85 million floor, gross margin falls below 25% or the twelve month backlog drops under $280 million.
In July a North American utility hired American Superconductor to connect a new mine to its network. The chief executive says that if the job had been sold the old way, as separate products, it would have been worth $4 million to $5 million. AMSC is doing the design, installation and commissioning as well, so it is a $25 million order.
The value of a single project has gone up by about five times. Meanwhile the market is judging the stock on one quarter’s gross margin of 26.3%. On Wednesday evening the company reports its September quarter, which will give us our first look at whether the record order book is turning into revenue at a better margin.
Transmission and grid hardware sits at Flight on our Disruption Map. The products work and the buyers are known, so the open question is how long and how profitably the expansion runs. This week answers part of it.
What just happened
On August 5 AMSC reported revenue of $94.1 million for the quarter to June 30. A year earlier the figure was $72.4 million. Part of the 30% increase came from Comtrafo, a Brazilian transformer maker it bought last fiscal year. Orders topped $130 million, led by utility projects that serve new mines, and operating cash flow nearly quadrupled to $16.0 million.
The profit figures were weaker. Gross margin fell to 26.3% from 33.8% a year earlier, and adjusted net income, which is the company’s non GAAP measure, dropped to $7.6 million from $11.6 million. Reported net income of $9.5 million looked better than the underlying business because it included an $8.1 million gain from lowering the expected earnout payable on Comtrafo. Guidance for the September quarter called for revenue above $85 million. Management said some customers had asked for deliveries to be brought forward into June.
On October 29 the company set the date. Results come out after the market closes on Wednesday November 4, and management holds a call at 10:00 a.m. Eastern on Thursday November 5.
The business
AMSC sells power control equipment. The core of it is the STATCOM, a fast power electronics system that injects or absorbs reactive power so that voltage holds steady when a big motor starts or a smelter swings its load. Around the STATCOM it sells NEPSI capacitor banks, Neeltran rectifiers and now Comtrafo transformers. A smaller Wind unit, 19% of revenue, sells electrical control systems to turbine makers, mainly Inox Wind in India.
The customer base is broader than the name suggests. In the June quarter about 30% of revenue came from renewables, 20% each from traditional energy, materials (mining and semiconductors) and utilities, and nearly 10% from the military, where AMSC supplies ship protection systems to the Navy. Orders tilted further: materials were about a third.
The mine order shows what is changing. The release lists a modular STATCOM, capacitor banks, shunt reactors, a 138kV transformer, switchgear and protection controls, designed as one system. The utility is paying for a connection that meets its performance standards on the first day. The bill comes with its own costs, though. Switchgear bought from other suppliers, field crews and commissioning time carry a lower margin than AMSC’s own electronics. So turnkey work should add far more gross profit dollars than percentage points of margin.
A detail from the balance sheet: deferred revenue, which is mostly customer prepayments, rose to $102.6 million at June 30 from $93.3 million in March. There is also a $119.8 million deferred tax asset left over from years of losses, so cash taxes should stay low for some time. The big European and Japanese grid suppliers compete mostly at transmission scale; AMSC sells speed and ownership of the whole connection.
Where it sits on our curve
We put the Grid business at Flight. The constraint for a large new load is not generation. It is the connection point. A utility will not energise a mine or a fab whose load swings would destabilise voltage for everyone else on the line. The buyer acts once a supplier can guarantee code compliance within the project schedule. The turnkey package exists to sell exactly that, removing the coordination risk that normally sits with the utility or its contractor.
The evidence has reached expansion. Grid revenue rose to $251.3 million in the year to March from $187.2 million. Twelve month backlog grew about 40% to roughly $280 million at that point and was above $300 million by June. Total backlog now exceeds $400 million. The most important figure for repeatability is that orders excluding the $25 million mine order still came to more than $100 million, above that quarter’s revenue. That means the demand is coming from many customers.
The strongest alternative explanation is that June was an unusually good quarter. On that view customers pulled deliveries forward, one large order and the acquisition flattered the totals, and the margin damage from the Brazil expansion is permanent. The two readings separate on Wednesday. A scaling order book shows orders at or above revenue and margin recovering. A one off shows orders well below revenue and margin stuck near 26%.
The numbers
Five quarters show the direction. Revenue was $66.7 million in the March 2025 quarter, $72.4 million in June 2025, an average of about $70 million over the two quarters that followed, then $86.4 million in March 2026 and $94.1 million in June. The full year to March 2026 came to $299.2 million, up 34%, with organic growth of about 25%.
Gross margin has moved the other way, and this is the market’s concern. It was 33.8% in June 2025, 27.3% in March 2026 and 26.3% in June. The finance chief broke the latest figure down: about 1.6 points came from Comtrafo purchase accounting, more came from new direct labour in Brazil hired ahead of the backlog, and the rest from an unfavourable product mix that he said should not repeat. Taking out the accounting effect alone gives a starting point near 28%.
AMSC held $153.1 million in cash and restricted cash at June 30, has no bank borrowings, and carries a $31.9 million earnout liability for Comtrafo. Capital spending was $10.4 million in the quarter, about $7.5 million of it for a Brazilian factory building, and management does not expect any more building costs. Diluted shares rose 18.6% from a year earlier to 47.1 million. Most of that came from a $124.6 million share sale in the June 2025 quarter, so the comparison should ease from here.
For the September quarter the company guides to revenue above $85 million and adjusted net income above $8 million, which is $0.17 a share. We could not confirm a street revenue figure from a primary source. Our own estimate for the year to March 2027 is about $360 million, roughly 20% growth, assuming the second half runs at the June quarter’s level.
What the price already requires
At about $27 a share and 48.4 million shares outstanding, the market value is close to $1.31 billion. After subtracting cash and adding the earnout, the enterprise value is about $1.19 billion. Annualising the September guidance gives adjusted earnings of roughly $32 million, about 40 times at today’s price. Our estimate is that it needs close to $1 a share of adjusted earnings in the year to March 2028, valued at around 28 times.
The cases. Downside: revenue stalls near $350 million at a 26% gross margin, earnings come in around $0.40 a share and the stock is worth roughly $10. Central: revenue of about $420 million at a 31% margin, with cash operating costs near $80 million, earns about $0.98 and supports roughly $27. Upside: $480 million at 32% earns about $1.30, worth around $39 at 30 times. The central case supports today’s price and leaves no spare margin, so the result needs to arrive roughly on schedule.
Here is the gap. The market is reading a gross margin percentage. The order book is changing what each project is worth. If turnkey work makes an ordinary $5 million equipment job into $25 million of revenue, a few such projects each year add more gross profit than several points of margin recovery. None of that is in reported revenue yet, because the mine package does not ship until the next fiscal year. The twelve month backlog alone covers about $75 million a quarter before any new order is booked.
What breaks it
We are writing the thresholds down now, before the results. Any one of three outcomes on November 4 would break the thesis: revenue below the $85 million floor, gross margin below 25%, or twelve month backlog falling under $280 million, back to where it stood in March. Any of these would show that June borrowed from the future and the order book is not scaling. A margin stuck between 25% and 27% with no mix explanation would push the central case out by a year.
The next most likely way it fails is through the acquisition. When an earnout liability is cut by $8.1 million, the usual reason is that the acquired business is now expected to miss the targets the earnout was based on. If Comtrafo is underperforming while Brazil carries extra labour, the margin damage could be structural. Financing does not threaten the thesis. AMSC is profitable, generated cash last quarter and has more than $150 million in the bank, so it can reach every test below without raising money.
What we are watching
- November 4, 2026, Q2 results. Strengthens: revenue of $88 million or more, gross margin of 28% or better, orders at least equal to revenue, and twelve month backlog at $300 million or more. Breaks: revenue under $85 million, margin under 25% or backlog under $280 million.
- November 5, 2026, the call. Strengthens: a second turnkey award, or bids of a similar size named in the pipeline. Breaks the turnkey leg of the thesis: management calling the mine order a one off.
- Early February 2027, Q3 results. Management has promised better gross margin in the second half. Strengthens: 29% or higher. Breaks: below 27% for a third straight quarter.
- By the full year report in May 2027. Strengthens: a first data centre order, which management said could come this fiscal year, and a second turnkey order of $15 million or more. If neither arrives, the turnkey shift is still unproven.
Not financial advice.
References
- American Superconductor Corporation. Form 8-K, Exhibit 99.1: AMSC Reports First Quarter Fiscal Year 2026 Financial Results and Business Outlook. US Securities and Exchange Commission. Published August 5, 2026. Accessed October 31, 2026. https://www.sec.gov/Archives/edgar/data/0000880807/000143774926025921/ex_978081.htm
- AMSC. AMSC Secures $25 Million Turnkey Contract for Large Scale Mining Development. Published July 28, 2026. Accessed October 31, 2026. https://ir.amsc.com/news-releases/news-release-details/amsc-secures-25-million-turnkey-contract-large-scale-mining
- Investing.com. Earnings call transcript: American Superconductor posts record Q1 2026 revenue. Investing.com. Published August 6, 2026. Accessed October 31, 2026. https://www.investing.com/news/transcripts/earnings-call-transcript-american-superconductor-posts-record-q1-2026-revenue-93CH-4843178
- AMSC. AMSC to Report Second Quarter Fiscal Year 2026 Financial Results on November 4, 2026. GlobeNewswire. Published October 29, 2026. Accessed October 31, 2026. https://www.globenewswire.com/news-release/2026/10/29/3391899/18367/en/amsc-to-report-second-quarter-fiscal-year-2026-financial-results-on-november-4-2026.html
- American Superconductor Corporation. Form 8-K, Exhibit 99.1: AMSC Reports Fourth Quarter and Fiscal Year 2025 Financial Results and Business Outlook. US Securities and Exchange Commission. Published May 27, 2026. Accessed October 31, 2026. https://www.sec.gov/Archives/edgar/data/0000880807/000143774926018539/ex_919739.htm