Bloom Energy vs. Eos Energy Enterprises: Which Energy Storage Stock Is a Better Buy in 2026?

Energy infrastructure is shifting as AI data centers demand massive amounts of constant power. Choosing between Bloom Energy Corp (NYSE:BE) and Eos Energy Enterprises Inc (NASDAQ:EOSE) requires weighing established fuel cell technology against emerging storage solutions.

Bloom provides onsite power through solid oxide fuel cells, serving giants in the data center and utility space. Eos offers zinc-based long-duration energy storage, a critical component for stabilizing renewable energy grids. Both operate in the expanding industrial stocks category but present different risk-reward profiles for investors.

The case for Bloom Energy

Bloom sells onsite power systems that use solid oxide fuel cell technology to generate electricity without combustion. The company is currently targeting high-growth sectors, specifically AI infrastructure and semiconductor manufacturing. Significant partnerships include an agreement with American Electric Power Corp (NASDAQ:AEP) to provide up to 1 gigawatt of fuel cell systems and a $5.0 billion financing framework with Brookfield Corp (NYSE:BN).

In FY 2025, revenue reached more than $2 billion, representing approximately 37% growth over the prior year. Despite this strong top-line performance, the company reported a net loss of roughly $88.4 million. This results in a negative net margin of about 4.4%, which is a measure of how much profit a company retains from its total sales. This loss was significantly narrower than the prior year, suggesting a move toward profitability as the company scales its operations among industrial stocks.

As of its December 2025 balance sheet, the debt-to-equity ratio was approximately 3.9x. This ratio measures a company's total debt relative to the value of its shareholders' equity, and a higher number indicates more financial leverage. The company maintains what is called the current ratio of roughly 6x, which shows it has six times more short-term assets than short-term liabilities. Free cash flow for the year reached roughly $57.2 million. Free cash flow equals cash flow from operations minus capital expenditures, and a positive result means the business generated more cash than it spent on equipment.

The case for Eos Energy Enterprises

Eos manufactures zinc-based energy storage systems designed as an alternative to traditional lithium-ion batteries. The company primarily serves utility-scale projects and renewable energy developers looking for long-duration storage. Customer concentration is a notable factor, as two specific customers accounted for about 52% and close to 19% of total revenue during 2025, which adds a layer of risk to the business.

In its latest annual report for the fiscal year ended December 31, 2025, revenue reached approximately $114.2 million. This was an increase of 630% over the prior year as the company ramped up its commercial manufacturing. However, Eos reported a net loss of nearly $1.75 billion, much wider than the prior year.

As of its December 2025 balance sheet, the debt-to-equity ratio was -1.0x, indicating that total liabilities exceed shareholder equity. The so-called current ratio was 4.9x, suggesting the company has sufficient current assets to meet its immediate financial obligations. Free cash flow was negative, reaching nearly negative $265 million, as the company continued to invest heavily in its production facilities.

Risk profile comparison

Bloom Energy faces legal risks, including pending securities class action lawsuits alleging misstatements about its supply chain. The company also relies on scandium supplies linked to China, which could be disrupted by geopolitical tensions. Furthermore, its goal to increase production capacity to 2 gigawatts by the end of 2026 involves significant execution challenges and potential cost overruns.

Eos Energy Enterprises faces risks related to its ongoing net losses and its continued reliance on outside capital to fund operations. The company depends on a single manufacturing facility in Pennsylvania, making its entire output vulnerable to localized disruptions. It also competes against much larger players in the battery space, such as Tesla Inc (NASDAQ:TSLA) and Fluence Energy Inc (NASDAQ:FLNC), while navigating its own securities litigation.

Valuation comparison

Eos appears cheaper based on its future sales multiple, but its massive net loss and negative equity present a different risk profile than Bloom.

Valuation metrics sourced from Financial Modeling Prep (FMP) and may differ from other data providers.

Which stock would I buy in 2026?

The current fiscal year, 2026, looks to be a major step-ahead year for Eos Energy Enterprises. The business has already sold more product through the first half of the year than it did in all 2025, shipping $126 million of gear to clients.

Longer term should be much greater. Management says it has nearly $25 billion of business pipeline, meaning proposed energy storage devgelopments Eos could bid on, and an $807 million backlog, which are firm orders for the company's products. 2026 revenue is seen more than doubling.

Bloom Energy's core product is its Energy Server, a stand-alone power source for commercial and industrial customers. The Energy Server is based on solid oxide fuel cell technology and runs on natural gas, biogas, or hydrogen. Natural gas has historically been the dominant fuel, despite Bloom being heralded as a clean energy business in its early days.

The business aims to lower its cost of production by about 10% a year to attract more customers (its main markets are the U.S. and Korea). The AI datacenter boom is a tailwind for Bloom, which should see revenue leap 85% to $3.75 billion in fiscal 2026. That has Wall Street expecting a swing to net income of about $440 million.

That picture for both companies tell us two things: Eos is exciting and has a developing business, while Bloom has a developed business with lots of room to grow. The ability of Bloom to feed immediate data center demand is too strong to overlook, even as Eos gives investors plenty of reason to be optimistic. The choice for 2026 is Bloom Energy.

Brendan Coffey has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Bloom Energy, Brookfield Corporation, Fluence Energy, and Tesla. The Motley Fool has a disclosure policy.