ARRY vs FSLR: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: ARRY is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. ARRY and FSLR share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined ARRY and FSLR exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Array Technologies designs and manufactures solar trackers, the mechanical systems that rotate rows of photovoltaic panels through the day so utility-scale projects capture more sunlight than fixed-tilt installations. Its flagship DuraTrack and OmniTrack lines, plus the STI International business, sell into large ground-mount solar farms across the Americas, Europe, and increasingly emerging markets. Array makes money on hardware volume tied to how many gigawatts of solar get built, so revenue is lumpy and project-driven rather than recurring. The company crossed 100 gigawatts of cumulative tracker deliveries, underscoring its scale, and has leaned into US-made, domestic-content trackers to help developers qualify for bonus tax credits.

Full ARRY guide

First Solar is one of the largest solar panel manufacturers in the United States and the leading maker of thin-film solar modules. Unlike most competitors that use crystalline silicon, First Solar uses a cadmium telluride (CdTe) thin-film technology that it developed and manufactures at scale. This gives it a differentiated cost structure, strong performance in hot and humid climates, and a supply chain largely independent of the Chinese silicon ecosystem. The company sells utility-scale solar modules primarily to large developers and power producers building solar farms, mainly in the US, India, and other markets. First Solar makes money by manufacturing and selling these modules, and its US-based production qualifies for domestic manufacturing incentives. Headquartered in Tempe, Arizona, First Solar has expanded capacity aggressively across Ohio, Alabama, Louisiana, and India. It benefits from policy support for domestic clean energy manufacturing and from buyers seeking non-Chinese solar supply.

Full FSLR guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• ARRY drivers: Record orderbook and margin recovery; US policy, domestic content, and tax credits.
• FSLR drivers: Domestic manufacturing incentives; Differentiated thin-film technology.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The central risk is that Array depends on the utility-scale solar buildout, which is sensitive to interest rates, developer financing, and US clean-energy policy. For FSLR, first Solar's fortunes are closely tied to policy, particularly US clean energy manufacturing incentives, which could change with political shifts.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick ARRY if you believe its drivers more; FSLR if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the ARRY and FSLR guides.

ARRY. Figures are approximate and tied to the asOf date; verify live numbers before acting. Array's revenue is lumpy and project-driven, so a single quarter is a poor guide to the full year, and the orderbook matters more than any one period's sales. As a company moving between GAAP losses and adjusted profitability, valuation multiples on trailing earnings can be misleading. Treat guidance and backlog as directional, and check the latest filings for current revenue, margins, and cash position.

FSLR. First Solar is valued as a profitable, policy-advantaged solar manufacturer with substantial contracted backlog. Investors weigh strong current margins and incentive support against the cyclicality and pricing pressure of the broader solar industry. The valuation reflects both the durability of its domestic manufacturing position and sensitivity to policy and trade developments.

Headline figures (approximate, Jul 2026): ARRY shows revenue (q1 2026) ~$223 million; full-year 2026 guidance of roughly $1.4 to $1.5 billion, adjusted ebitda (2026 guidance) ~$200 to $230 million for the full year, q1 2026 profitability Small GAAP net loss (about $0.09 per share); adjusted net income roughly break-even to slightly positive, adjusted gross margin ~30%+ in Q1 2026, up sharply on cost improvements; FSLR shows revenue (ttm) ~$4 to 5 billion, operating margin ~high teens to mid-twenties percent, net income (ttm) ~$1 billion or more, contracted backlog ~tens of gigawatts, multi-year.

ARRY and FSLR are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined ARRY and FSLR exposure against your real portfolio. It is not an investment adviser.