- Flexibility trading allows industrial companies to adjust their electricity consumption in line with market signals and actively support grid stability.
- Controllable processes, energy management systems and storage solutions help reduce power costs and generate additional revenue.
- Power-to-heat combined with thermal storage enables real flexibility by storing surplus electricity as heat and using it when needed.
- Platform providers and aggregators make it easier for smaller companies to access flexibility markets such as day-ahead and intraday trading.
- Heat-as-a-service models offer a predictable option where flexibility trading happens entirely in the background.
The growing share of renewable energy is forcing a fundamental restructuring of the power grid. Because generation depends heavily on weather conditions, energy prices fluctuate and the electricity market is prone to short-term imbalances between supply and demand. To keep the system stable and prices competitive, greater flexibility is essential. For many years this task lay mainly with transmission system operators.
Industrial consumers are now playing a more active role. By engaging in flexibility trading, they not only support grid stability but also gain financial benefits. In essence, flexibility trading means adjusting electricity consumption in response to real-time market or grid signals. By shifting energy use through controllable processes or storage, companies can respond more precisely to price and supply fluctuations. This not only supports grid stability but also opens up new revenue streams. Flexibility is becoming a strategic lever.
Why the power market needs flexibility
For flexibility trading to work in practice, it’s essential to understand why the power market increasingly depends on flexible demand. Unlike conventional power plants, renewable energy isn’t available in consistent amounts at all times. Electricity is generated when the wind blows or the sun shines, regardless of actual consumption.
This fluctuating feed-in creates new challenges for grid operation. Sudden surges in generation can overload local networks. To prevent this, grid operators use redispatch measures, shifting planned feed-in to balance the system. These interventions are technically complex and often involve compensation payments.
Volatility also shows up clearly on power exchanges. Even small shifts in supply and demand can trigger sharp price swings. In periods of strong wind and sun, prices may drop into negative territory, while generation bottlenecks can push them to extreme highs.
How companies can benefit from flexibility trading
In a dynamic price environment, demand flexibility can become a clear economic advantage for companies. Those able to shift or temporarily reduce consumption can make targeted use of price signals. Energy-intensive processes, for example, can be moved to periods with lower wholesale prices—at night, on weekends or during times of high renewable generation.
To enable this kind of flexibility, companies need controllable processes and digital energy management systems that can react quickly to market data. These systems continuously record consumption, analyze real-time market conditions and adjust operations without disrupting production. Energy storage plays an additional role by decoupling the timing of power purchases and use, which further expands the range of options.
Compared with traditional, passive electricity procurement, this approach offers several benefits. Companies can lower their power costs, strengthen the resilience of their energy supply and enhance their sustainability profile by actively supporting the integration of renewables into the electricity system.
Flexibility trading with thermal storage: A practical example
The potential of flexibility trading becomes especially clear in industrial heat generation. The key is coupling the two energy streams so that electricity can be purchased flexibly and stored as heat for later use.
Power-to-heat as the link between electricity and heat
Modern power-to-heat solutions follow this principle by converting electricity into process heat through electric heating technologies. They create a direct link between the power and heat sectors, allowing companies to use surplus electricity for thermal applications that would otherwise go to waste or be curtailed.
As a conversion technology alone, however, power-to-heat offers only limited flexibility. Electricity can be used only when heat is needed in production. True operational flexibility emerges only when storage is added to the system.
The role of thermal storage in flexibility trading
Thermal storage solutions such as the ThermalBattery™ expand the scope of power-to-heat solutions. They decouple the timing of electricity purchases from the use of heat in industrial processes, making flexibility economically viable in the first place. Companies can absorb power during peak generation periods and later supply it as process heat or steam when needed. This creates manageable loads that can be aligned with power market structures and monetized, for example through participation in the day-ahead market.
Economic and regulatory framework
This requires suitable market structures and the right technical setup. Alongside the day-ahead market, where electricity is traded one day in advance, intraday trading is becoming increasingly important, especially for short-term optimization and participation in virtual power plants. Companies don’t need to trade on the exchanges themselves. A growing number of aggregators and platform providers handle flexibility trading on their behalf, giving smaller and mid-sized consumers easier access to the market.
From a technical perspective, clear standards apply. Facilities must be controllable, accurately measurable and predictable to ensure reliable integration of flexibility into the market. In addition, support schemes and regulatory incentives encourage the use of flexible loads, for example through reduced grid fees or investment grants.
Stability instead of price swings: Heat as a service
There are different ways for companies to make use of power market flexibility, depending on their technical setup, resources and strategic priorities. Heat-as-a-service models offer a particularly user-friendly option. Instead of managing electricity procurement themselves, companies receive a reliable heat supply at a fixed price, regardless of wholesale market fluctuations. Flexibility trading takes place entirely in the background. Providers operate the power-to-heat systems and storage units, optimize their use based on market signals and take responsibility for both cost efficiency and security of supply. This gives companies a high degree of planning certainty, even as power price volatility increases.
Outlook for industry: Flexibility as a strategic advantage
The energy market will remain volatile, and that volatility opens up strategic opportunities for many industrial players. Power-to-heat solutions combined with thermal storage can turn them from passive energy consumers into active participants in the power market. Flexibility trading is not a passing trend but part of a long-term structural shift. Companies that invest early in future-proof solutions can benefit directly.
