Best Sodium-Ion Battery Stocks to Watch

The Challenge for Investors

There is no pure-play publicly listed sodium-ion battery company. Even Natron Energy, which went public via SPAC, is a small-cap with a focused industrial-storage business. Most sodium-ion activity is inside large conglomerates (CATL, Reliance) or private startups (HiNa, Altris, Tiamat). Investors need to take an indirect approach — buying companies where sodium-ion is a growing part of a larger business, or investing in the supply chain.

Tier 1: Direct Sodium-Ion Exposure

CATL (Contemporary Amperex Technology)

• Ticker: 300750.SZ (Shenzhen Stock Exchange)
• Market cap: ~¥1 trillion (~£110 billion)
• Sodium-ion relevance: First major manufacturer to mass-produce sodium-ion (Naxtra brand). AB hybrid battery system. Deploying in EVs and grid storage.
• The catch: Sodium-ion is a small fraction of CATL's total output. The company is primarily a lithium-ion giant. Listed in China — accessibility for UK investors is limited to ADRs or China-focused funds.

Natron Energy

• Ticker: STC (Nasdaq)
• Market cap: Small-cap (~$200–500 million range)
• Sodium-ion relevance: The closest thing to a pure-play sodium-ion stock. Entirely focused on sodium-ion Prussian blue chemistry for stationary storage.
• The catch: Small, pre-profit company that went public via SPAC. High volatility, execution risk, and the stock may be thinly traded. Not suitable for risk-averse investors.

Reliance Industries

• Ticker: RELIANCE (NSE/BSE) | Reuters: RELI.NS
• Market cap: ~$240 billion
• Sodium-ion relevance: Owns Faradion (UK sodium-ion pioneer) and is building a sodium-ion gigafactory in Jamnagar, India.
• The catch: Reliance is a massive conglomerate (oil, telecom, retail, chemicals). Sodium-ion is a tiny part of the business. Accessible via India ETFs or international brokers.

Tier 2: Supply Chain Plays

Sodium Carbonate (Soda Ash) Producers

Sodium-ion batteries need sodium carbonate (soda ash) as a raw material. While sodium is abundant, high-purity soda ash production is concentrated among a few large chemical companies:

• Solvay (SOLB.BR) — Belgian chemical giant, major soda ash producer
• Church & Dwight (CHD) — US consumer products company with significant soda ash mining operations
• Tata Chemicals (TATACHEM.NS) — Indian chemicals company with soda ash production

The catch: soda ash is a commodity used in glass, chemicals and detergents. Battery demand is a tiny fraction of total consumption. This is a very indirect play.

Hard Carbon Suppliers

Hard carbon anodes are made from biomass or petroleum pitch. Companies that supply carbon materials could benefit from sodium-ion growth, but this is an even more indirect exposure. Most hard carbon for sodium-ion is produced by the battery manufacturers themselves or by specialist Japanese/Korean carbon companies.

Tier 3: Battery & Energy Storage ETFs

For most UK investors, ETFs are the most practical way to get exposure. See our dedicated Sodium-Ion ETFs & Funds guide for details. Key options include:

• Global X Lithium & Battery Tech ETF (LIT)
• Amundi MSCI Global Environment ETF
• iShares Global Clean Energy ETF (ICLN)

These aren't sodium-ion specific, but they hold the companies (CATL, Reliance, etc.) that are building sodium-ion technology.

How to Access These Stocks from the UK

• International brokers: Interactive Brokers, Trading 212, and similar platforms offer access to US (Nasdaq), European and Asian markets
• ADR route: Some Chinese and Indian stocks trade as ADRs on US exchanges
• ETF route: Easiest — buy a battery or emerging markets ETF that holds these companies
• ISA/SIPP: Many international stocks and ETFs are eligible for ISA/SIPP wrappers — check with your provider

Risk Factors to Understand

• Early stage: Sodium-ion is commercially real but not yet at lithium-ion scale. Cost advantages will take years to fully materialise
• Competition: Lithium-ion prices are falling too. If lithium prices drop significantly, sodium-ion's cost advantage narrows
• Execution risk: Scaling battery manufacturing is hard. Companies may miss production targets or face quality issues
• Regulatory: Battery standards, recycling rules and trade policies can shift quickly
• Small-cap risk: Natron (STC) is a small, volatile stock. Don't invest money you can't afford to lose

The Bottom Line

There's no easy way to invest purely in sodium-ion batteries. CATL is the biggest player but is primarily a lithium-ion company. Natron is the closest pure play but is a risky small-cap. Reliance is a conglomerate. For most investors, the best approach is a combination of battery ETFs (for broad exposure) and selective individual stock picks (for higher-risk, higher-reward exposure). Do your own research, understand the risks, and never invest more than you can afford to lose.

Learn More

• Sodium-Ion ETFs & Funds — how to build exposure via funds
• How to Invest in Sodium-Ion Batteries — the practical UK guide
• The Companies Building Sodium-Ion Batteries — full company profiles

Nothing on this site is financial advice. All content is for educational purposes only. Always do your own research and consult a qualified financial adviser before making investment decisions. Back to all guides