First Solar: America's Solar Manufacturing Champion Has a Problem
First Solar (FSLR) sold a record 17.5GW of modules and hit $5.2B revenue in 2025. Then shares cratered 18% on weak 2026 guidance. I dig into the numbers, the technology, and whether the pullback is a buying opportunity.
Record Year, Stock Crash — Welcome to First Solar
There's a particular kind of frustration in investing when a company delivers the best year in its history and the stock tanks anyway.
That's exactly what happened with First Solar.
In 2025, FSLR sold a record 17.5 gigawatts of solar modules. Revenue hit $5.2 billion — a strong year by any measure. The company expanded its manufacturing footprint, grew its backlog, and solidified its position as the undisputed champion of US solar manufacturing.
And then the stock cratered 18% on the 2026 guidance.
I've been following First Solar for a long time, and I think this is one of those situations where the market might be overreacting to near-term uncertainty while ignoring the structural strengths. But I also think the uncertainty is real and worth understanding. Let me walk you through it.
What First Solar Actually Does (And Why It Matters)
First Solar isn't like other solar companies. And I don't mean that in the generic "every company is unique" way. I mean it's genuinely, structurally different from almost every other solar panel manufacturer on the planet.
Most solar panels — probably 95%+ of global production — use crystalline silicon technology. This technology is dominated by Chinese manufacturers who have spent decades and tens of billions of dollars building out supply chains that stretch from polysilicon refining to cell manufacturing to module assembly. The scale advantages are enormous, and it's extremely difficult for anyone else to compete on cost.
First Solar uses thin-film cadmium telluride (CdTe) technology. It's a completely different approach to converting sunlight into electricity. Instead of slicing silicon wafers, First Solar deposits thin layers of semiconductor material onto glass substrates in a continuous, highly automated manufacturing process.
This matters for several reasons:
Different supply chain. First Solar doesn't depend on Chinese polysilicon, which has been plagued by forced labor concerns, tariff wars, and price volatility. Their supply chain is fundamentally separate from the crystalline silicon ecosystem.
Performance advantages in certain conditions. CdTe panels actually perform better than crystalline silicon in high-heat, high-humidity environments. Given that many of the best solar resources are in hot, sunny places, this is a meaningful technical advantage for utility-scale projects.
Lower carbon footprint. First Solar's manufacturing process has a significantly lower embedded carbon footprint than crystalline silicon production, which is energy-intensive. For buyers who care about the lifecycle environmental impact of their solar installations, this matters.
Fully integrated US manufacturing. First Solar operates large-scale factories in Ohio, Alabama, and Louisiana. This makes them one of the very few companies that can offer a genuinely American-made solar panel at scale.
The 2025 Performance: Why It Was Impressive
Let me give credit where it's due. First Solar's 2025 execution was excellent.
Revenue of $5.2 billion represented strong year-over-year growth. Module shipments of 17.5GW set a new company record. And the backlog — the contracted future orders — extends all the way to 2030, providing unusually long visibility into future revenues.
Net bookings in Q4 2025 alone were 3.1GW, showing that demand for First Solar's modules remains robust even in a challenging policy environment.
The company also continued expanding its manufacturing footprint. The Alabama and Louisiana facilities are ramping production, adding domestic capacity that qualifies for IRA manufacturing credits.
The 2026 Guidance: Why the Market Panicked
Now let's talk about what spooked the market.
First Solar guided for 2026 revenue of $4.5 billion to $5.3 billion, with adjusted EPS of $12.50 to $17.50.
Read that EPS range again. The spread between the low end and high end is $5.00 per share. For a stock trading around $150, that's a 40% difference in earnings outcome. That kind of uncertainty makes institutional investors very uncomfortable.
Why so wide? Two words: policy uncertainty.
IRA Tax Credits (45X)
First Solar is one of the single biggest beneficiaries of the IRA's Section 45X advanced manufacturing production tax credits. These credits provide a per-watt benefit for solar components manufactured in the United States. For First Solar, with its multiple US factories producing at scale, the 45X credits are a massive margin tailwind.
If the credits continue as written, First Solar's earnings power is strong — closer to the high end of guidance. If the credits get modified, reduced, or phased out faster than currently scheduled, earnings could be significantly lower — closer to the low end.
Management essentially told the market: "We don't know what's going to happen with the IRA, and our financial outcomes vary dramatically depending on the answer." The market responded by selling first and asking questions later.
Tariff Dynamics
The other wildcard is tariffs on Chinese solar panels. Current US trade policy includes tariffs and restrictions on Chinese crystalline silicon modules, which has been a competitive advantage for First Solar (since their CdTe panels aren't subject to the same restrictions).
If tariff policy changes — either through new trade deals, enforcement changes, or policy reversals — the competitive landscape could shift. Lower tariffs on Chinese panels would increase competition for First Solar in the US market. Higher tariffs would strengthen their position further.
The Factory Expansion Story
Despite the near-term uncertainty, First Solar is betting big on US manufacturing.
The company is expanding its production capacity across three states:
Ohio: First Solar's original manufacturing base, with multiple facilities producing CdTe modules at scale. These are the most mature and efficient production lines.
Alabama: A newer facility that's been ramping through 2025 and into 2026. This adds significant capacity and qualifies for the full suite of IRA manufacturing credits.
Louisiana: The newest addition to the manufacturing portfolio, still in the early stages of ramp-up. When fully operational, it will add several additional gigawatts of annual production capacity.
The combined US manufacturing footprint gives First Solar the ability to produce a substantial volume of modules domestically — a critical selling point for utility-scale developers who need to meet domestic content requirements under the IRA.
The Backlog: Long-Term Visibility
One of First Solar's greatest strengths is its contracted backlog. The company has orders stretching through 2030, covering billions of dollars in future revenue.
This provides a level of revenue visibility that's rare in the solar industry, where most manufacturers operate on shorter-term order cycles. For investors, the backlog represents a floor under the business — even if new bookings slow, the existing backlog provides years of revenue.
That said, backlogs aren't ironclad. In rare cases, customers can renegotiate pricing, delay deliveries, or in extreme scenarios, cancel orders (typically with penalties). But First Solar's historical backlog conversion rate has been strong, and I'd give them credit for maintaining long-term customer relationships.
The Competitive Landscape
First Solar occupies a unique position in the global solar market. They're not trying to beat the Chinese on cost in crystalline silicon — that's a losing game. Instead, they've built a moat around:
- Differentiated technology that Chinese manufacturers don't produce
- US manufacturing that qualifies for domestic policy benefits
- Utility-scale focus where project developers value supply chain certainty and US content
- Long-term contracts that reduce revenue volatility
The risk? If Chinese manufacturers ever seriously invest in thin-film CdTe technology. So far, they haven't — the crystalline silicon ecosystem is so dominant and entrenched in China that there's little incentive to switch. But I wouldn't count them out permanently.
The other competitive risk comes from emerging technologies — perovskite solar cells, tandem architectures, and other next-generation approaches that could eventually compete with both CdTe and crystalline silicon. First Solar is investing in its own R&D (including perovskite-on-CdTe tandem cells), so they're not ignoring the threat.
Valuation: What Are You Paying?
At around $150 per share and the midpoint of 2026 guidance ($15/share EPS), First Solar trades at roughly 10x forward earnings. That's cheap for a growth company with a multi-year backlog.
But here's the nuance: at the low end of guidance ($12.50 EPS), the stock is at 12x — still not expensive, but less compelling. And if IRA uncertainty persists, the market will likely apply a lower multiple to reflect the policy risk.
Compared to the broader solar sector, First Solar looks reasonable. Compared to the S&P 500, it's actually trading at a discount on a P/E basis. The question is whether that discount is warranted by the policy risk or represents an opportunity.
My Take
I'm going to give you the nuanced version of my view, because First Solar genuinely pulls me in both directions.
What I like:
- The technology differentiation is real and durable
- US manufacturing is a structural advantage in the current policy environment
- The backlog provides multi-year revenue visibility
- Valuation is reasonable — this isn't a bubble stock
- Management has a history of solid execution
What concerns me:
- The wide 2026 guidance range tells me even management doesn't know what's coming
- IRA risk is binary and largely outside the company's control
- If tariffs on Chinese panels change, the competitive dynamics shift meaningfully
- Capex is high as they ramp new factories — cash conversion could suffer near-term
My overall take? I think First Solar is one of the highest-quality companies in the solar sector, and the pullback from the $170-180 range to the $150s creates a more attractive entry point. But the IRA uncertainty is a real overhang that won't resolve quickly.
If you have a strong conviction that IRA tax credits will remain largely intact, First Solar at these levels looks like a solid buy. If you think there's a meaningful probability of significant IRA modifications, you might want to wait for more clarity before committing significant capital.
I'm positioned with a moderate allocation — enough to benefit if the bull case plays out, but not so much that IRA changes would significantly impact my portfolio. That's the kind of sizing that lets you sleep at night with a policy-sensitive stock.
The Bottom Line
First Solar delivered a record 2025 and got punished by the market for honest guidance about 2026 uncertainty. That's frustrating if you're a shareholder, but it's also how markets work — they price risk, and the IRA risk is substantial.
The long-term investment thesis for First Solar remains intact: differentiated technology, US manufacturing at scale, and a multi-year backlog. The near-term thesis depends heavily on policy outcomes that neither you, I, nor First Solar's management can predict with confidence.
For patient investors who understand the risks, this pullback could be a gift. For everyone else, there's no shame in waiting for the fog to clear.
Not financial advice. Always do your own research.