First Solar, Inc. (FSLR) — Fundamental Analysis

Data sourced from SEC 10-K filings through fiscal year 2025 and the most recent 10-Q for the quarter ended March 31, 2026.

Snapshot & Big Picture

First Solar is America's largest domestically headquartered solar panel manufacturer, producing thin-film cadmium telluride (CdTe) photovoltaic modules at scale. Unlike most of its peers who rely on Asian supply chains, First Solar manufactures primarily in the United States and is a key beneficiary of the Inflation Reduction Act's domestic clean energy incentives. Over the past three fiscal years, the company has undergone a dramatic financial transformation — from near-breakeven in 2022 to a highly profitable, cash-generative business by 2025, with annual revenue crossing $5.2 billion and operating margins above 30%.

Latest Quarter Snapshot (Q1 2026 — Most Current Data Available)

The quarter ended March 31, 2026 represents the most recent financial data and shows continued momentum beyond the full-year 2025 results.

Q1 2026 gross margin of 46.6% is notably the highest in the dataset, suggesting further pricing power or cost efficiency gains beyond what was achieved in fiscal 2025. A net margin of 33.2% in a single quarter is exceptional for a capital-intensive manufacturer. If this quarterly run rate were annualized, it would imply roughly $4.2 billion in annual revenue — though quarterly results can vary due to project-timing lumpiness inherent in utility-scale solar contracts.

Profitability — Multi-Year Trend

First Solar's profitability story over the past decade is one of sharp volatility followed by a powerful recovery. Margins were deeply negative in 2016, near zero in 2019, and collapsed again in 2022 as the company absorbed significant cost headwinds. Since 2023, however, the picture has changed dramatically, driven by IRA tax credits, manufacturing scale, and improved module pricing.

The 2022 collapse in gross margin (to just 2.7%) reflects a period of elevated input costs, supply chain disruption, and transition costs as First Solar ramped new Series 6 and Series 7 manufacturing capacity. The recovery from 2023 onward is striking — gross margins jumped to ~39–44% range, and operating margins recovered to the low 30s. The slight margin dip in 2025 versus 2024 on the gross line (40.6% vs 44.2%) is worth monitoring but is not alarming given the still-strong absolute level and the Q1 2026 data showing gross margin rebounding to 46.6%.

Financial Health

First Solar has maintained a conservative balance sheet throughout its history, consistently carrying more current assets than current liabilities and keeping leverage modest relative to equity.

The current ratio has declined from its peak above 4x in 2021, which is consistent with a company actively deploying capital into manufacturing expansion rather than sitting on idle cash. Importantly, it remains comfortably above 2.5x, indicating strong near-term liquidity. The debt-to-equity ratio ticked up in 2023–2024 as First Solar funded new factory builds, but has since declined to 0.40x in 2025 and 0.35x in Q1 2026, signaling improving leverage as earnings accumulate. For a capital-intensive manufacturer, this level of debt is quite manageable.

Growth

The table below shows pre-calculated trailing revenue CAGR figures across available time windows, computed directly from the annual filing data.

The 3-year CAGR of 25.8% is notably stronger than the 5-year CAGR of 14.0%, which reflects the fact that the 5-year window includes 2020 and 2021 — years of stagnant revenue — while the 3-year window captures the post-IRA acceleration phase beginning in 2023. This divergence suggests that First Solar's growth rate has meaningfully re-rated upward in recent years, driven by domestic manufacturing incentives and surging utility-scale solar demand.

Plain English Summary

First Solar has gone from a company that could barely cover its costs in 2022 to one generating over $1.5 billion in net income on $5.2 billion in revenue by 2025 — a remarkable three-year turnaround. The Inflation Reduction Act gave First Solar a structural tailwind that its Chinese-dependent competitors cannot easily access: domestic manufacturing tax credits that directly boost margins. The numbers bear this out. Gross margins have vaulted from near-zero in 2022 to the 40–47% range by early 2026, and the balance sheet remains healthy with a current ratio above 2.5x and debt-to-equity trending back down toward 0.35x. Revenue has more than doubled in three years at a CAGR of nearly 26%. The most recent quarter (Q1 2026) actually shows margins expanding further, which is encouraging. The key risks to watch are policy risk — any reversal or weakening of IRA incentives could directly hit margins — and the inherent lumpiness of utility-scale solar contracts, which can cause quarter-to-quarter revenue swings. But viewed purely on the fundamentals from available filings, First Solar presents a picture of a capital-intensive manufacturer that has found a durable profitability model and is scaling it aggressively.

Source Filings

• Form 10-Q — Filed 2026-04-30 (Period ended March 31, 2026)
• Form 10-K — Filed 2026-02-24 (Fiscal Year ended December 31, 2025)