Why These 3 Solar Stocks to Buy Offer Prime Investment Opportunities in 2026

The renewable energy sector is experiencing a pivotal moment, and solar stocks to buy are capturing investor attention as the industry navigates significant transitions. While the U.S. solar sector faced installation pressures in 2025, major agencies project that solar power will drive over 50% of new electricity generation capacity this year, signaling powerful recovery momentum. For investors seeking exposure to this growth trajectory, three standout companies—Sunrun Inc. (RUN), Shoals Technologies Group (SHLS), and Tigo Energy Inc. (TYGO)—represent compelling opportunities worth considering for your portfolio.

Understanding the Solar Investment Landscape

The solar industry encompasses a diverse ecosystem of participants. Some companies focus on designing and manufacturing high-efficiency solar modules, panels, and cells, while others specialize in installation and grid integration. A crucial segment manufactures inverters that convert solar power into electricity compatible with electric grids. According to the Solar Energy Industries Association (SEIA), solar photovoltaic (PV) capacity accounted for 56% of all new electricity-generating capacity added to the U.S. grid in the first half of 2025, making it the nation’s dominant form of new generation.

This dominant market position underscores why solar stocks to buy remain attractive despite recent headwinds. The market fundamentals point toward sustained growth, even as near-term challenges persist.

Three Compelling Solar Stocks to Buy Now

Sunrun Inc. (RUN) stands as a leader in residential solar energy systems, developing, owning, managing, and selling solutions across the country. The San Francisco-based company recently announced its fifteenth securitization since 2015, raising over $1.5 billion in non-recourse debt financing during Q3 2025 alone. This demonstrates strong access to capital markets and financial flexibility to fuel expansion. Revenue estimates for 2025 show an anticipated 11.2% improvement year-over-year, while earnings estimates have improved substantially over the past two months. The company carries a Zacks Rank of #1 (Strong Buy), reflecting analyst confidence.

Shoals Technologies Group (SHLS), based in Portland, Tennessee, manufactures a comprehensive portfolio of solar balance-of-systems products, including combiner boxes, disconnect solutions, custom harnessing, junction boxes, and monitoring systems. The company recently partnered on the Maryvale Solar and Energy Storage Project in Australia—a 243 MW solar facility with 172 MW of battery storage. This milestone project, one of the largest DC-coupled systems in the region, bolsters Shoals’ international expansion and market credibility. With a long-term earnings growth rate of 24% and 2025 revenue estimates showing 15.3% improvement, SHLS offers substantial growth potential. It currently holds a Zacks Rank of #2 (Buy).

Tigo Energy Inc. (TYGO), headquartered in Campbell, California, specializes in intelligent solar and energy storage solutions. The company recently achieved regulatory certification in Slovakia for its three-phase Tigo EI Residential solution, confirming compliance with local grid requirements and enabling market access in European residential solar markets. Notably, 2025 revenue estimates suggest a dramatic 91.9% improvement, with loss estimates improving over recent months. Tigo carries a Zacks Rank of #2, indicating strong analyst support.

Growth Catalysts Supporting Solar Stocks to Buy

The U.S. Energy Information Administration (EIA) projects total electricity generation growth of 2.3% in 2025, with solar supplying the largest share of this increase. This forecast represents a fundamental tailwind for industry participants. Additionally, developers are rushing to complete projects ahead of new government-imposed deadlines established in 2025, which should drive installation activity in the second half of the year and beyond. These dynamics suggest that despite Q2 2025’s 24% installation decline—driven by tariff pressures and policy uncertainties—the industry trajectory remains decisively positive.

Navigating Industry Headwinds

The path forward for solar stocks to buy is not without obstacles. The One Big Beautiful Bill Act (OBBBA), signed into law in July 2025, reduced federal tax credits previously available under the Inflation Reduction Act while implementing Foreign Entities of Concern (FEOC) restrictions. Analysts project these restrictions could impact approximately 50% of operational solar manufacturing capacity, potentially constraining supply and investment momentum.

Tariff pressures compound these challenges. The Trump administration’s implementation of 10% baseline tariffs in April 2025 increased module costs by 13% year-over-year, while residential and commercial system prices rose 2% and 10% respectively. Overhead and permitting costs surged approximately 30% year-over-year, pressuring near-term profitability despite expected volume growth.

Valuation Metrics and Market Position

On a trailing 12-month EV/EBITDA basis, the solar industry currently trades at 5.52X compared to the broader S&P 500’s 18.22X valuation multiple. This discount reflects investor concerns about near-term policy and tariff headwinds. Historically, the industry has traded as high as 50.91X and as low as 4.03X, with a five-year median of 24.09X, suggesting current valuations offer relative value for patient investors.

While the solar industry underperformed both its broader energy sector and the S&P 500 over the past year—declining 22.5% compared to the sector’s 4.5% gain and the composite’s 18.8% surge—the Zacks Solar industry currently carries a Rank of #43, placing it in the top 18% of over 250 industries tracked. This positioning reflects foundational strength despite short-term pressures.

The Case for Adding Solar Stocks to Your Portfolio

As the renewable energy transition accelerates and solar capacity claims an ever-larger share of new generation additions, investor interest in solar stocks to buy should intensify. The three companies highlighted—Sunrun, Shoals Technologies, and Tigo Energy—each demonstrate distinct competitive advantages: strong capital access, international expansion, and regulatory breakthrough achievements. While policy uncertainties and tariff pressures present near-term risks, the underlying demand drivers remain compelling.

For investors with a medium-to-long-term horizon, these solar stocks to buy represent meaningful opportunities to participate in the energy transition while valuations remain relatively attractive compared to historical levels. The convergence of powerful tailwinds from renewable energy mandates, capacity growth projections, and technological advancement suggests that disciplined investors who weather current volatility may be rewarded handsomely as the solar industry matures and consolidates around its strongest players.