What is energy storage and why does it matter for investing?

Energy storage refers to technologies that capture electricity and save it for use at a later time. This is especially important for renewable energy sources like solar and wind, which only generate power when the sun shines or the wind blows. Without storage, excess energy is wasted and grids can become unstable. Companies that solve this problem are positioned at the heart of the global clean energy transition, which is why investors are increasingly paying attention to this sector.

What are solid-state batteries and why are they significant?

Solid-state batteries replace the liquid electrolyte found in traditional lithium-ion batteries with a solid material. This makes them safer, more stable, and capable of storing more energy in a smaller space. They are seen as a major technological leap forward for both electric vehicles and grid-scale energy storage. Companies developing solid-state technology are considered to be working on one of the most important breakthroughs in the energy sector.

What is a flow battery and how is it different from a regular battery?

A flow battery stores energy in liquid form within large tanks, rather than in solid cells like a standard battery. The key advantage is that you can increase the storage capacity simply by using bigger tanks, making them ideal for long-duration, grid-scale applications. They also tend to have a longer lifespan and are well-suited for storing large amounts of renewable energy over extended periods. Iron flow batteries, for example, use low-cost and widely available materials.

What does 'grid-scale energy storage' mean?

Grid-scale energy storage refers to very large battery or storage systems connected directly to the electricity grid. Unlike a home battery that might power a few appliances, grid-scale systems can store enough energy to power thousands of homes. They help balance supply and demand on the grid, especially as more renewable energy sources come online. Companies providing these solutions play a crucial role in making national and regional energy grids more reliable and sustainable.

What is an analyst rating and what does it tell me?

An analyst rating is an assessment made by a financial professional about the likely future performance of a stock. Common ratings include 'Buy', 'Hold', and 'Sell'. A 'Buy' rating suggests the analyst believes the stock price is likely to rise, while a 'Sell' suggests the opposite. These ratings are based on research into a company's finances, market position, and growth prospects. They are one of several tools you can use to help inform your investment decisions, though they are not guarantees.

What does 'Potential Profit %' mean?

Potential Profit % is an estimate of how much a stock's price could increase, based on the target prices set by financial analysts. For example, if a stock is currently priced at £10 and analysts believe it could reach £13, the potential profit would be 30%. It is important to remember that this is a forward-looking estimate, not a guarantee. Markets can be unpredictable, and actual returns may differ from analyst expectations.

What is market capitalisation and why does it matter?

Market capitalisation, often shortened to 'market cap', is the total value of a company's shares on the stock market. It is calculated by multiplying the share price by the total number of shares. A large market cap generally indicates a more established company, while a smaller market cap can suggest a younger or faster-growing business. Within this group, you will find a mix of both, reflecting a range of maturity levels across the energy storage industry.

15 Handpicked stocks

Energy Storage Innovations | What's Next for the Grid

Focusing on innovative battery technologies and grid-scale storage solutions essential for a renewable energy transition. This theme targets companies developing high-capacity, long-duration energy storage systems.

Why You'll Want to Watch These Stocks

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The Grid Can't Wait

Governments and energy companies worldwide are racing to stabilise power grids as renewables surge. The companies in this group are building the infrastructure that makes that possible, and the window to get in early may not stay open for long.

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Breakthroughs Are Happening Now

From solid-state batteries to iron flow technology, this sector is seeing real innovation at pace. Analysts are watching these firms closely as higher energy densities and falling costs could unlock enormous commercial opportunity.

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Experts Are Paying Attention

Professional analysts have hand-selected these companies for their intellectual property, scalable manufacturing, and strategic positioning across the entire energy storage value chain. This is not a trend to overlook.

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About This Group of Stocks

Our Expert Thinking

The world is moving away from fossil fuels, and that shift depends on one critical piece of the puzzle: storing energy reliably. Solar and wind power are intermittent by nature, so without smart, large-scale storage solutions, grids can become unstable. This group targets companies at the forefront of solving that problem, from next-generation battery cell manufacturing to the software that keeps power flowing smoothly alongside renewable generation.

What You Need to Know

This is a growth-oriented, thematic basket, meaning these companies are tied to a long-term trend rather than short-term market movements. The sector spans a wide value chain, including battery hardware, smart-grid software, and integrated renewable platforms. As with any emerging technology space, there can be volatility, but the underlying demand for energy storage is expected to grow significantly as decarbonisation targets tighten globally.

Frequently Asked Questions

15 Handpicked stocks

Energy Storage Innovations | What's Next for the Grid

Top Picks from This Group

Here are a few of the assets in this group. Create an account to unlock the full list.

TESLA INC

TSLA

Current Price

$352.45

Develops high-capacity lithium-ion battery storage products like Megapack and Powerwall for grid and home use.

ENPHASE ENERGY INC

ENPH

Current Price

$37.58

Designs and manufactures integrated solar and battery systems to manage residential and commercial renewable energy storage.

SOLAREDGE TECHNOLOGIES INC

SEDG

Current Price

$30.37

Provides intelligent inverter solutions integrated with energy storage systems to maximise solar power utilisation.

FLUENCE ENERGY INC

FLNC

Current Price

$11.35

STEM INC

STEM

Current Price

$5.62

QUANTUMSCAPE CORPORATION

Current Price

$5.85

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