Fluence Energy, Inc. (FLNC) is a global leader in providing intelligent energy storage solutions, operational services, and asset optimization software. The company plays a crucial role in the transition to a more sustainable energy future by helping utilities, independent power producers, and renewable energy developers integrate and manage renewable energy sources effectively.

1. The Business Model (How They Make Money)

Fluence Energy's core business revolves around designing, integrating, deploying, and servicing large-scale battery energy storage systems (BESS). They essentially provide the "brains and brawn" for storing energy from sources like solar and wind, making sure it's available when needed to stabilize power grids.

Their revenue primarily comes from three main areas:

• Energy Storage Products and Solutions: This is the largest part of their business, accounting for approximately 96.96% of their total revenue. This involves selling the actual battery systems, integrated controls, and their operating system.
• Services: Fluence offers long-term operations, maintenance, and digital optimization services for the energy storage systems they deploy.
• Digital Applications and Solutions: They also provide software platforms, such as Mosaic, which use artificial intelligence to help manage and optimize energy assets, allowing customers to participate more effectively in energy markets.

While the majority of their current sales come from hardware-intensive products, Fluence is strategically shifting to become more of a software-enabled solutions provider, aiming for higher-margin, recurring revenue from their software and services.

For the fiscal year ended September 30, 2025, Fluence Energy reported total revenue of $2.3 billion. Looking ahead, the company has provided guidance for fiscal year 2026, expecting revenue to be between $3.2 billion and $3.6 billion, with a midpoint of $3.4 billion.

2. The Metrics That Matter Most

For Fluence Energy, given its growth stage and focus on expanding the adoption of energy storage, the following performance metrics are particularly important:

• Revenue: This metric tells us the total amount of money Fluence brings in from selling its energy storage systems, services, and software. For a company like Fluence, which operates in a rapidly growing industry and is focused on expanding its market share, consistent revenue growth is a critical indicator of its ability to capture demand and scale its operations. In fiscal year 2025, Fluence reported revenue of $2.3 billion. For the second quarter of fiscal year 2026, revenue was approximately $464.9 million.

• Gross Margin: This shows how much profit Fluence makes from its core products and services after covering the direct costs of making and delivering them. It's a key measure of efficiency in their manufacturing and project execution. As Fluence aims to increase its higher-margin software and services revenue, we would ideally want to see this margin improve over time. Fluence's GAAP gross profit margin for fiscal year 2025 was approximately 13.1%. For the second quarter of fiscal year 2026, the GAAP gross profit margin was approximately 10.0%.

• Net Income (or Net Loss): This is the ultimate bottom-line number, showing whether the company is profitable after all expenses, including operating costs, interest, and taxes, are accounted for. Since Fluence is still investing heavily in growth, it has reported net losses. Tracking this metric helps investors understand the company's progress towards sustainable profitability. Fluence reported a net loss of $68.0 million for fiscal year 2025. For the second quarter of fiscal year 2026, the net loss was approximately $29.2 million.

• Operating Cash Flow: This metric reveals how much cash the company generates from its regular business operations before accounting for investments or financing activities. For a company involved in large-scale projects and manufacturing, having strong operating cash flow is vital to fund its day-to-day activities and growth without relying too heavily on external funding. Fluence Energy's operating cash flow was -$145.5 million in fiscal year 2025. In the second quarter of fiscal year 2026, it was -$121.1 million.

• R&D Expenses (Research & Development Expenses): This metric represents the money Fluence spends on developing new technologies, improving existing products, and innovating in the energy storage space. In a rapidly evolving industry like renewable energy, continuous innovation is crucial for staying competitive. High R&D spending can indicate a commitment to future growth and technological leadership. Fluence's research and development expenses for fiscal year 2025 were $86.217 million.

3. How to Value This Company

For Fluence Energy, the most relevant valuation metric is P/Sales (Price-to-Sales Ratio).

Here's why: Fluence is a growth company in a capital-intensive industry that has recently reported net losses. When a company isn't consistently profitable yet, traditional valuation metrics like the Price-to-Earnings (P/E) ratio aren't very useful because earnings are negative or highly volatile.

The P/Sales ratio compares the company's total market value (how much the entire company is worth on the stock market) to its total revenue. It helps investors understand how much they are paying for each dollar of the company's sales. For Fluence, which is focused on expanding its revenue base and market share, P/Sales provides a way to gauge its valuation relative to its top-line growth. A lower P/Sales ratio might suggest the stock is cheaper for its sales, while a higher ratio could indicate investors expect significant future growth.

For example, for fiscal year 2025, Fluence Energy's "Capitalization / Revenue" (which is equivalent to P/Sales) was 0.63x. This means investors were paying $0.63 for every dollar of revenue the company generated in 2025. Comparing this ratio to its historical levels and to similar companies in the energy storage sector can help a beginner investor determine if the stock is currently cheap or expensive based on its sales generation.