Hidden Flexibility in C&I Sites

If you ask an energy manager about flexibility, they’ll probably mention the battery, if they have one.

But nearly every commercial or industrial site has untapped flexibility: cold stores that can run without power for twenty minutes, production batches that can be shifted by two hours, backup generators that rarely get used, and EV chargers that draw full power during peak times.

The grid is now paying for this kind of quick response.

Four questions that reveal flexible assets

Whether an asset can make money from flexibility depends on a few key physical traits.

How big is the asset? For example, a megawatt-scale electric boiler might be large enough for some markets on its own, while a 50 kW charger is too small. The size tells you if the asset needs to be grouped with others before it can earn revenue.

How quickly can it respond? Frequency reserves need a reaction in seconds or minutes, while shifting loads for day-ahead prices allows for hours of notice. The speed of response determines which products the asset can participate in.

How long can the asset keep up its response? For example, turning off a chiller for ten minutes is very different from shutting down a process line for four hours. The duration helps decide which markets are a good fit.

How often can the asset be used this way? For instance, cycling a battery every day is normal, but stopping a furnace every week could damage equipment or affect warranties. How many times a year you can use the asset sets the real revenue limit.

Different operations, different flexibility

Sites with heavy thermal loads, like food retailers, cold storage, and hotels, have an advantage called thermal inertia. For example, a well-insulated cold store can stay at a safe temperature for quite a while after the compressors turn off, so short responses don’t cost anything. Manufacturers that work in batches have flexibility in timing. If a process can start at 2:00 p.m. or 11:00 a.m., that timing difference can be valuable. Sites that need to run all the time, like data centers, usually find flexibility in their cooling systems, backup equipment, or any non-essential loads.

There’s also a fast-growing group: small electric assets showing up at many sites. These include heat pumps, EV chargers at workplaces and depots, and rooftop solar with small batteries. On their own, they’re too small for most markets, but when combined across many sites, they become valuable to system operators.

From audit to income

Turning flexibility into income involves three steps. First, measure each asset’s energy use and limits. Second, check if what the asset can do matches the technical needs of each market, from wholesale trading to aFRR. Third, manage the assets in real time without affecting normal operations. Product temperature, production deadlines, and schedules always come first; flexibility is only used when there’s extra capacity.

​Aggregation platforms help carry out these three steps on a large scale. Energy retailers, ESCOs, and asset managers who work with many sites have an advantage because value increases across a portfolio.

Our FLEXO engine brings together different types of assets, such as loads, storage, and generation, into one portfolio that meets market requirements and finds the best value at any time, both for operators and their customers.

As renewables grow, Europe needs much more flexibility, and grid operators are opening their markets to more distributed resources. Companies that see flexibility as a bonus from their existing operations will find profits that their competitors miss.

FAQ

‍

What makes an industrial asset flexible?

There are four main traits: size (can it meet market thresholds on its own), response speed (seconds for frequency reserves, hours for load shifting), how long it can keep up a response, and how many times a year it can be used without causing wear or warranty problems. Rate an asset on these four points to see its real value.

​

Do small assets qualify for flexibility markets?

Alone, almost never. Aggregated into a virtual power plant, yes: the pooled portfolio clears minimum bid sizes and prequalification while each asset contributes what it can. This is how heat pumps, chargers and small batteries reach markets built for power plants.

​

Which sites have the most hidden flexibility?

Operations with thermal inertia (cold storage, food retail, hotels) and batch-based manufacturers with schedulable processes. Both can shift meaningful load without touching product quality or deadlines.