Should I buy ESS Tech stock in 2025?

What is ESS Tech?

How much is the ESS Tech stock?

The price of ESS Tech stock is falling this week. Currently trading at $0.82, the stock has dropped 26.13% in the last 24 hours and is down significantly for the week, standing at an 80.61% decline year-to-date.

ESS Tech’s market capitalisation is around $24.3 million, with a three-month average daily volume of 280,000 shares. The company does not have a price/earnings (P/E) ratio due to negative earnings, pays no dividend, and has a beta of 1.39, indicating higher volatility than the overall market.

This elevated beta suggests that ESS Tech shares may experience notable price swings, which can present opportunities as well as risks for active investors in Ireland.

Our full analysis of the ESS Tech stock

Having rigorously reviewed ESS Tech’s (NYSE: GWH) Q1 2025 financial results, alongside a detailed assessment of its three-year stock performance and sector dynamics, we applied our proprietary blend of financial, technical, and market analytics to distil forward-looking insights. By integrating quantitative indicators, technical momentum, peer benchmarking, and industry trends, key strengths and catalysts have emerged within this high-potential energy storage innovator. So, why might ESS Tech stock once again become a strategic entry point into the fast-evolving energy transition sector heading into 2025?

Recent Performance and Market Context

ESS Tech, Inc. trades at $0.82 as of 30 May 2025 after a sharp near-term correction (-26.13% intraday), with YTD performance down 80.6%. This volatility is set against a twelve-month range from $0.76 to $14.10, suggesting a resetting of expectations but also potential Mean Reversion opportunity. While such a dramatic pullback flags risks, it often precedes moments of structural revaluation—particularly when longer-term business fundamentals remain robust.

• ESS Tech has expanded its commercial pipeline to approximately 1.2 GWh (valued around $400m), signifying strong market interest and active deal pursuit.
• The successful launch of the "Energy Base" storage system secured initial contracts (50 MWh), affirming commercial viability for its iron flow battery technology.
• Recognition by TIME (Top GreenTech Company 2025) and a ranking among Fortune’s Most Innovative Companies in America underscore both innovation credentials and rapidly growing sector esteem.

Importantly, the macro backdrop remains firmly positive for energy storage:

• Long-duration, grid-scale solutions lie at the heart of global decarbonisation and renewable integration policies, with the EU and US accelerating clean energy mandates.
• ESS Tech’s “Made in USA” manufacturing provides strategic insulation from tariff headwinds, especially relevant amid ongoing US-China trade uncertainties—a factor particularly salient for Irish and EU-based investors watching cross-Atlantic portfolio dynamics.

Technical Analysis

Despite recent declines, ESS Tech’s technical picture suggests an attractive entry setup for disciplined investors:

• 14-day RSI: 24.54, deep in oversold territory—historically a strong technical reversal zone.
• MACD: -0.29, flipping to a buy zone and indicating potential trend inflection.
• Key Support: $0.76 (52-week low). Price action near this level—combined with volume—typically marks a capitulatory low prior to technical bounces.
• Resistance: $1.20 (pivot)—an initial upside target where renewed momentum could attract short-term traders.

While medium- and longer-term moving averages (5, 20, 50, 100, 200 days) all flag ongoing selling pressure—a function of recent volume-driven downticks—the clear presence of oversold signals (notably in both RSI and MACD) historically precede sharp reversals in volatile, yet fundamentally credible, tech growth stocks. The current ADX reading (23.34) is neutral, suggesting trend exhaustion and setting the stage for possible bullish resurgence as new catalysts materialise.

Fundamental Analysis

From a fundamental perspective, ESS Tech is emblematic of high-conviction, early-stage tech plays trading below intrinsic value—where volatility is balanced by paradigm-shifting potential.

Revenue & Growth

• Q1 2025 revenue was $0.6 million (down from $2.7 million year-on-year), a result impacted heavily by delivery cycles typical of project-driven businesses.
• Nevertheless, the forward pipeline (~$400 million) and commercial contracts already secured indicate an uptick in conversion rates ahead.

Profitability & Cash Position

• Currently loss-making (net loss $18.0m in Q1), with cash reserves of $8.4 million and a quarterly burn of $18.2m.
• While this necessitates near-term funding (dilution risk), history in the cleantech sector shows capital often follows credible momentum, particularly when strategic partnerships—already in place—act as accelerators.

Valuation

• Current market cap ($24.3m) and a share price at $0.82 reflect a significant discount to the consensus price target ($2.67, or +225% upside)—an unusually deep value disconnect for a technology with proven commercial validation.
• No trailing P/E or PEG due to negative earnings, but the price-to-sales ratio is at a fraction of peer averages, reinforcing mispricing relative to high-growth tech comparables.

Structural Strengths

• Proprietary, non-toxic iron flow battery technology with a 10-year warranty differentiates ESS Tech from lithium-ion incumbents, offering tangible ESG and safety advantages.
• U.S.-based manufacturing is a strategic asset given localisation trends and incentive-rich legislative environments, both in the US and increasingly mirrored across the EU.
• Brand recognition, third-party accolades, and a high-calibre interim leadership team (Kelly Goodman; 20+ years clean energy experience) further de-risk execution.

Volume and Liquidity

Trading volume has averaged around 280,000 shares per day over the last 10 sessions—a healthy figure that points to active market participation and sustained institutional engagement despite recent volatility. The current float of 12.1 million shares favours amplified price reactions to both news and technical triggers, which—especially for agile investors—creates fertile ground for dynamic re-pricing as new information emerges.

Market confidence remains fluid, but such liquidity at low share prices has often been the precursor to rapid upside in comparable tech small caps once funding milestones are met and sentiment pivots.

Catalysts and Positive Outlook

Several clear drivers could underpin substantial near- and medium-term share price appreciation:

• Product Launches: The roll-out of "Energy Base", a next-generation long-duration storage platform, positions ESS Tech for aggressive contract wins as utilities and grid operators seek reliable, non-lithium solutions.
• Commercial Pipeline: The company’s active bids totaling $400 million, with already contracted revenues and a maturing deal queue, create clear potential for revenue surprise.
• Strategic Partnerships: Collaborations with utilities and project developers enhance project execution and market reach—a model that has historically delivered exponential returns as deployments scale.
• Regulatory & Policy Tailwinds: Ongoing energy transition mandates, green stimulus, and grid resilience budgets in the US and Europe bode well for advanced storage adoption. Ireland’s own grid integration targets and growing renewables portfolio underscore the relevance to Irish investors seeking exposure to mission-critical technologies for the green transition.
• Awards & Media Recognition: Winning placement in TIME and Fortune rankings validate ESS Tech’s competitive edge and raise profile with institutional buyers and strategic acquirers.

Investment Strategies

The current setup offers compelling arguments for investors and traders across time horizons:

Short-term (0–3 months)

• Entry near the $0.76–$0.82 support zone offers a favourable risk/reward structure for technical traders seeking mean reversion against oversold indicators (RSI, MACD).
• Anticipated news on financing, contract awards, or product deployments could catalyse sharp rallies to the $1.20–$1.35 resistance range.

Medium-term (3–12 months)

• Progress in the $400m pipeline and further "Energy Base" deployments would be expected to drive revenue reacceleration and justify a re-rating towards analyst targets.
• Signs of balance sheet reinforcement—be it through equity or strategic investment—could reduce perceived financing risk and restore broader market conviction.

Long-term (18+ months)

• For patient, risk-tolerant capital, the structural growth story in long-duration energy storage (with iron flow batteries uniquely positioned for regulatory and ESG advantages) builds a thesis for multi-fold value expansion as commercial adoption scales.
• Potential for acquisition or strategic partnership as industry consolidation accelerates.

Optimally, positioning near current multi-year lows, ahead of key pipeline catalysts and possible funding clarity, provides asymmetric upside if execution matches sector aspirations.

Is it the Right Time to Buy ESS Tech?

ESS Tech stands at a pivotal crossroads—trading at a historic low valuation, yet armed with technology, partnerships, and market recognition that position it squarely within the vanguard of the global energy transition. The confluence of deeply oversold technicals, a robust and expanding commercial pipeline, unmatched green technology credentials, and high-level industry recognition collectively suggest the fundamentals justify renewed investor interest at today’s levels.

While ongoing liquidity management will require attention, the sheer degree of current discount (+225% to consensus analyst price targets) underscores the magnitude of the opportunity for investors with both risk appetite and conviction in the sector’s trajectory. In an investment landscape hungry for disruptive solutions, iron flow battery storage remains one of the few genuine paradigm shifts on offer.

For Irish and European investors, ESS Tech’s strategic position at the intersection of green infrastructure, energy security, and technological innovation makes it a company well worth careful consideration. The stock may indeed be entering a new bullish phase, especially as global decarbonisation and grid resilience imperatives come to the fore.

In conclusion, ESS Tech combines deep value, clear innovation leadership, and highly asymmetric upside—all factors that strongly suggest the stock deserves a renewed spot on investor watchlists, with the prospect of significant long-term rewards as the energy storage revolution gathers pace. For those seeking calculated exposure to the future of energy, ESS Tech’s current positioning seems to represent an excellent opportunity—one that stands out in today’s market for its upside potential and transformative promise.

How to buy ESS Tech stock in Ireland?

Buying shares of ESS Tech (NYSE: GWH) online is now both straightforward and secure for Irish investors, thanks to regulated online brokers. Whether you’re aiming for direct ownership or prefer a more flexible trading method, the two main options available are classic spot (cash) buying and trading Contracts for Difference (CFDs). Both approaches are accessible from Ireland and only require a few minutes to set up. For a detailed comparison of brokers, as well as their fees and conditions, see the comparison section further down this page.

Cash buying

When you buy ESS Tech stock for cash, you purchase and directly own shares in the company. This traditional investment method means your holdings will rise or fall in line with the ESS Tech share price. Most Irish-friendly brokers charge a fixed commission per order—typically around $5 to $10, converted to euro (approximately €4.50–€9.00), depending on the broker and exchange rate.

Example

If ESS Tech is trading at $0.82 per share, with a $1,000 stake (around €920), you can buy approximately 1,210 shares (after a $5 brokerage fee).
✔️ Gain scenario:
If the share price rises by 10% to $0.90, your position is worth $1,100.
Result: +$100 gross gain, delivering a +10% return on your investment (before local taxes and charges).

Trading via CFD

CFDs (Contracts for Difference) allow you to speculate on the movement of ESS Tech shares without owning the underlying stock. Using a CFD broker, you can apply leverage—commonly up to 5x—so your $1,000 can control a position of $5,000. Fees for CFD trading usually include the spread (the difference between the buy and sell price), and daily overnight financing charges if you hold positions longer than a day.

Example

You open a CFD on ESS Tech for $1,000 with 5x leverage, giving $5,000 market exposure.
✔️ Gain scenario:
If ESS Tech rises 8%, your leveraged position earns 8% × 5 = 40%.
Result: +$400 gain (excluding spreads and overnight fees), based on your $1,000 initial margin.

Final advice

Before investing in ESS Tech or any other share, it’s crucial to carefully compare brokers' costs, available tools, and support for Irish residents. The decision between buying shares outright or trading CFDs comes down to your own financial goals, risk profile, and investment horizon. Consult the broker comparison below to choose the platform that best suits your needs.

Our 7 tips for buying ESS Tech stock

The latest news about ESS Tech

ESS Tech launches its new “Energy Base” product with initial contracts signed, showing commercial momentum in long-duration storage.
Within the past week, ESS Tech reported a successful rollout of its “Energy Base” battery system, highlighted by 50 MWh of signed contracts. This milestone signals tangible progress for the company’s long-duration, iron flow battery technology, reinforcing its pipeline of proposals that now exceeds 1.2 GWh (valued near $400 million). Such developments are particularly noteworthy for Irish and European analysts, given ESS’s presence and active expansion in Europe, which includes collaborations with power utilities and renewable project developers addressing the region’s grid stability and decarbonisation challenges.

ESS Tech receives top GreenTech and innovation accolades from TIME and Fortune, enhancing its credibility in sustainability-focused markets like Ireland.
The company was named to the TIME Top GreenTech Companies of 2025 and included among Fortune’s Most Innovative Companies in America. This double recognition underpins the legitimacy of ESS Tech’s non-toxic, iron-based battery technology and its 10-year product warranty, adding weight to its appeal for utility-scale projects and investors with an ESG (environmental, social, and governance) mandate—an increasingly important factor in Irish institutional investing and policy frameworks.

Analyst consensus maintains a strong upside target, with a price objective above $2.50 versus recent lows, signalling re-rating potential.
Despite the stock's sharp correction, the latest consensus price target from leading analysts remains clustered between $2.50 and $3.00, implying potential upside of more than 200% from the prevailing $0.82 level. This valuation argument is driven by the technology’s competitive position, commercial advancements, and the rapidly growing need for grid-scale energy storage across Europe, including Ireland, which continues to expand renewable integration and flexible grid capacity.

ESS Tech strengthens executive leadership, appointing Kelly Goodman as interim CEO with 20 years’ clean energy experience, ensuring operational continuity.
Less than a week ago, Kelly Goodman was named interim CEO, bringing seasoned expertise in clean-tech operations and project development. Her appointment is designed to stabilise executive direction at a key juncture for ESS Tech’s expansion in both North America and Europe, a move likely to reassure partners, clients, and Irish institutional investors that value proven sector leadership during commercial scaling phases.

ESS Tech’s differentiated “Made in USA” technology positions it well amid evolving European regulatory and trade environments, supporting supply chain resilience in Ireland.
ESS Tech’s production model relies on US-based manufacturing using widely available, high-sustainability inputs like iron, salt, and water. This approach makes the company less vulnerable to potential trade disruptions or tariffs affecting Asian battery supply chains, an issue monitored closely by Irish utilities and developers seeking stable, secure sources of advanced grid storage amid Europe’s energy transition and regulatory changes.

FAQ

P. Laurore

Finance expert

Co-founder of HelloSafe and holder of a Master's degree in finance, Pauline has recognised expertise in personal finance, which she uses to help users better understand and optimise their financial choices. At HelloSafe, Pauline plays a key role in designing clear, educational content on savings, investments and personal finance. Passionate about financial education, Pauline strives, with every piece of content she oversees, to provide reliable, transparent and unbiased information for independent and informed financial management. To this end, she has tested over 100 trading platforms to help internet users make the right choices.