Flexibility only becomes profitable when technology and strategy work hand in hand
Flexibility has become a sought-after commodity in today’s energy markets. Power grids depend on it to keep supply and demand in balance. Battery storage operators can benefit from this trend, if they truly understand their asset. Because what appears to be simple charging and discharging is, in fact, a dynamic market game where every detail matters.
Many operators focus solely on hardware and outsource trading to external aggregators. These market participants trade flexible capacity on energy exchanges, for example in balancing markets or intraday trading. Each unit of available flexibility can generate compensation, often commission-based. The technical backbone lies in energy management systems (EMS) that activate storage units on demand. Acting with accurate battery data here provides a real competitive edge.
Modern storage systems are capable of rapid response to grid signals. But only those who know the health and capabilities of their batteries can deploy them profitably. NOVUM’s battery monitoring system ‘Storage Guard’ provides exactly this kind of information—directly at the asset and even more precisely when used in combination with the battery management system (BMS). This enables operating strategies that are both flexible and secure.
Intra-day trading: Intraday trading means buying and selling electricity on the same day, often in 15-minute intervals. This helps balance short-term fluctuations and capitalize on price peaks. Battery storage is especially valuable in this context due to its ability to respond instantly.
Flexibility Trading: A Market for Precision and Speed
Flexibility means being able to quickly charge or discharge power. This is financially rewarded because it helps stabilize grid fluctuations, especially important in times of volatile renewable energy generation.
Key players include aggregators, direct marketers, grid operators, and energy traders. They trade services such as balancing power, intraday products, or peak shaving. Prices are driven by supply and demand as well as by the availability of reliable storage capacity. Those who can prove and provide their flexibility precisely earn higher revenues.
Peak shaving: Peak shaving refers to reducing peak power consumption—often with battery storage. This helps avoid expensive peak tariffs and lower grid fees.
Battery Storage: The Unsung Heroes of the Power Market
Battery storage systems are fast, scalable, and precisely controllable—ideal characteristics for trading short-term electricity products. Unlike traditional power plants, batteries can respond in milliseconds, making them highly desirable in flexibility markets.
However, not every battery is automatically profitable. Factors such as aging, temperature, charging behavior, and cell imbalances significantly impact performance, often without being noticed. Without accurate data, potential is wasted or risks go undetected.
Turning Power Fluctuations Into Profit: How Storage Systems Make It Work
Revenues come from provided capacity (e.g. in primary control markets) or from arbitrage opportunities in intraday trading. Peak shaving and grid-friendly behavior are increasingly being rewarded as well.
The key lies in the charging behavior. If you drive the battery too carefully, you give away proceeds. If you use it too aggressively, you risk breakdowns. NOVUM’s ‘Lifetime Guard’ calculates the costs per cycle in real time and shows how much can be earned with which strategy. This enables economically optimized storage behavior that takes lifetime and revenue into account at the same time.
Arbitrage effects: Arbitrage takes advantage of price differences—buying electricity at low prices, storing it, and selling at higher prices. The term comes from trading and describes the smart use of market inefficiencies to generate profit.
When Technology Becomes a Risk: The Hidden Nature of Cell Health
Many systems still estimate the true state of charge (SOC) inaccurately. State of health (SOH) data is often based on rough assumptions. This leads to poor decisions—such as unnecessary reserve capacity or risky operation. In high-frequency trading, this becomes a serious issue.
If SOC is misjudged, the storage system may not be available as planned, resulting in lost revenue or even penalties. Worse, premature aging or unexpected failures can cause damage in the six-figure range.
Battery Diagnostics: From Cost Driver to Revenue Booster
At NOVUM, we don’t just provide visual dashboards—we deliver in-depth diagnostics. Our cell-level analysis detects degradation, imbalances, and potential failures at an early stage. This forms the basis for economically sound operational planning and better investment decisions.
Our systems combine machine learning with over ten years of hands-on battery analytics experience. The result: accurate key performance indicators that flow directly into the trading process. This not only boosts earnings but also increases planning reliability.
Those Who Know Their Battery Play in a Different League
Flexibility only becomes a real source of return when it is reliable. That requires robust technology and precise data—this is where success is decided.
Battery diagnostics is not an optional extra, but the central lever for profitable storage operation. Those who truly understand their batteries can act more boldly and profitably in flexibility trading.
