Top 3 Renewable Energy Stocks To Watch In October 2026

When the US Department of Energy backs a proposed $100b AI and high performance computing hub that leans heavily on clean power, it underlines how central low carbon electricity has become to big ticket projects. Capital is hunting for long term energy solutions that can feed this kind of demand. That puts companies building and running solar, wind, hydro and tidal assets in focus. This article breaks down three stocks from that group.

The three stocks below represent a small sample of what this theme can offer, while the full screen surfaced 213 more renewable energy companies with equally compelling narratives that are not covered here. To identify your own high conviction ideas in this space, head straight into the Renewable (solar, wind, hydro or tidal) Energy screener.

Solaria Energía y Medio Ambiente (BME:SLR)

Overview: Solaria Energía y Medio Ambiente develops, owns, and operates large scale solar photovoltaic plants across Southern Europe and Latin America, tightly linking its business to utility solar generation.

Operations: Solaria Energía y Medio Ambiente earns most of its revenue in Spain at about €252 million, with smaller contributions from Italy and Uruguay.

Market Cap: €2.1b

Solaria Energía y Medio Ambiente matters for this renewable energy screen because it is not just selling power; it is building out long lived solar and infrastructure assets that underpin electricity supply for energy hungry partners.

"The September 2026 Royal Decree on Spanish data centers, which has already led to interest from more data center operators seeking reliable power and connection partners, introduces a new regulatory tailwind that could expand Solaria Energía y Medio Ambiente’s pipeline of long duration infrastructure contracts and raise future Infra revenue."

What happens if a single pressure point in this build out quietly shifts the balance between infra earnings and capital strain?

That pressure point is exactly where the full narrative for Solaria Energía y Medio Ambiente shows how infra earnings, contract length and funding needs could be quietly decoupling beneath the surface.

ERG (BIT:ERG)

Overview: ERG runs large wind farms and solar parks across Europe and the US, generating electricity from utility scale renewable assets.

Operations: ERG earns about €634 million from wind and €140 million from solar projects, with Italy and France the largest country contributors.

Market Cap: €3.2b

ERG matters for this renewable energy screen because it is deeply tied to building and operating utility scale wind and solar projects that supply contracted clean power to grid and industrial buyers.

"Substantial progress in long-term power purchase agreements (PPAs) for both new and de-incentivized assets, including the recently signed multi-year deals with A2A and the Italian state railways, provides higher visibility and stability in future cash flows and margins, reducing earnings volatility."

The real test for ERG is how its funding model and project mix react if one quiet pressure on future pricing starts to shift.

If that quiet pressure is what you care about, the full narrative for ERG shows how ERG’s contract momentum and capital load could be shifting under the surface.

EDP Renewables (ENXTLS:EDPR)

Overview: EDP Renewables plans, builds and runs large wind and solar power plants worldwide, selling the electricity to long term buyers.

Operations: EDP Renewables generates about €1 billion in Europe, €1 billion in North America and €145 million in APAC, with segment and intra segment adjustments.

Market Cap: €13.2b

EDP Renewables matters for this renewable energy screen because it is directly adding large wind and solar projects that feed grid scale clean power. At the same time, it is regularly selling parts of its portfolio to help fund new capacity.

"Capital recycling through asset rotations, such as the 0.8 GW of European deals and 49% U.S. portfolio stake sales that generated gains on invested capital and significant proceeds, offers an ongoing mechanism to fund new projects while aiming to support earnings and limit pressure on leverage and equity issuance."

The real tension for EDP Renewables is what happens if a single unseen pressure quietly shifts how much value each new project actually adds.

If that quiet shift is what you are weighing up, the full narrative for EDP Renewables shows where EDP Renewables’ recycling model could accelerate or quietly stall next.

Seeking Alternatives Before Momentum Flies

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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