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

As the world pivots toward cleaner power solutions, choosing between fuel cells and long-duration storage is a challenge for many. Bloom Energy Corp (NYSE:BE) and Eos Energy Enterprises Inc (NASDAQ:EOSE) represent two distinct paths.

Bloom Energy focuses on solid-oxide fuel cells that generate electricity onsite, while Eos develops zinc-based batteries designed for utility-scale storage. Both companies target the growing demand for grid reliability but operate with vastly different financial profiles and technological risks.

The case for Bloom Energy

In its latest annual report, filed for the fiscal year ended Dec. 31, 2025, Bloom Energy notes that it serves customers across nearly 1,000 sites. The company provides solid-oxide systems used for both electricity and hydrogen production. A major agreement with American Electric Power Co (NASDAQ:AEP) involves up to 1 gigawatt (GW) of fuel cells, and the company also has a prospective $5 billion financing framework with Brookfield Corp(NYSE:BN) for AI infrastructure projects.

In FY 2025, revenue reached about $2 billion, which represents growth of approximately 37% compared to the previous year. Despite this growth, the company reported a net loss of more than $88 million for the period, equating to a net margin of negative 4%. This follows a trend of narrowing losses since the company reported a net loss of $302.1 million in FY 2023.

As of its December 2025 balance sheet, the current ratio was roughly 6x. This liquidity measure suggests the company can cover its short-term obligations with its current assets. The debt-to-equity ratio was approximately 3.9x, meaning total debt is nearly four times the value of shareholder equity. Free cash flow was around $57 million, which represents the cash remaining after paying for capital expenditures.

The case for Eos Energy Enterprises

Eos Energy Enterprises manufactures zinc-based battery storage systems for utilities and industrial stocks. According to its latest annual report, filed for the fiscal year ended Dec. 31, 2025, Eos primarily sells products within the United States. Customer concentration is a significant factor here, as two customers accounted for roughly 51% and 19% of revenue. Customer concentration like this adds a layer of risk to the business.

In FY 2025, revenue reached approximately $114.2 million, a massive increase of 630% over the prior year. However, the company recorded a significant net loss of more than $1.7 billion. This loss was much wider than the $964 million loss reported in FY 2024, highlighting the high costs of scaling a newer energy technology.

Based on the December 2025 balance sheet, the current ratio was nearly 4.9x. This indicates a healthy ability to meet short-term liabilities with liquid assets. The debt-to-equity ratio was negative 1.0x, indicating that total liabilities exceed the total value of shareholder equity. Free cash flow was negative $265 million, which is the cash used for operations and capital projects during the year.

Risk profile comparison

Bloom Energy faces risks from the emerging nature of the hydrogen market and long sales cycles that can delay revenue recognition. Dependence on sole-source suppliers for critical raw materials and exposure to trade tariffs also impact its net margin. Additionally, the company is currently managing a securities fraud class action lawsuit that could result in unexpected legal costs or settlements.

Eos Energy Enterprises deals with a history of losses and a constant need for outside capital to fund its expansion. Scaling its manufacturing capacity in Pennsylvania carries execution risks, especially while competing with companies like Tesla Inc (NASDAQ:TSLA) or Fluence Energy Inc (NASDAQ:FLNC). Volatility in the lithium market can also affect the relative cost-competitiveness of its zinc-based storage solutions compared to traditional alternatives.

Valuation comparison

Eos Energy Enterprises appears cheaper based on its Forward P/E calculated from future earnings estimates, while Bloom Energy carries a much higher P/S ratio.

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.

Just recently, Eos scored a high-profile deal to support the PJM grid after joining with Alphabet Inc (NASDAQ:GOOG) and MN8 Energy on a solar energy storage project in West Virginia.

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.

The business aims to reduce its production costs by about 10% per 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 $4.1 billion in fiscal 2026. That has Wall Street expecting a swing to net income of about $658 million.

That picture for both companies tells us two things: Eos is exciting and has a developing business, while Bloom has a developed business with lots of room to grow. Bloom's ability to meet immediate data center demand is a tremendous advantage. However, its ratios are too rich for our liking. Eos, with its attractive P/S ratio compared to Bloom, along with its recent business advances, provides it the nod here.

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