Estimated reading time: 4 minutes
For a long time, talking about batteries in a business setting almost automatically brought to mind one situation: the power went out.
The battery came into play to keep equipment running for a while, support critical systems or ensure continuity until another source took over the operation.
This function is still important.
But energy storage is going from being just a response to power outages to becoming something much more strategic:
“a tool capable of giving the consumer greater control over when and how it uses energy.”
And this shift opens up a completely different discussion.
The problem is not always how much is consumed
Two companies can consume exactly the same amount of energy in a month and still have completely different costs and operational risks.
The reason lies in when that energy is needed.
Certain periods may have higher costs.
Demand peaks can put pressure on the electrical infrastructure.
An outage of just a few minutes can affect processes that take hours to return to normal.
And a renewable source can produce large amounts of energy at exactly the moment when the operation cannot make full use of it.
That is why analyzing only accumulated kWh consumption is similar to analyzing a company by looking only at its revenue.
There is important information there. But it does not tell the whole story.
Energy has quantity. But it also has timing.
This may be one of the most important concepts for understanding storage.
An electrical system needs to continuously balance generation and consumption.
The problem is that an operation's energy needs do not always happen at the same time energy is most available, most economical or most convenient.
Solar generation helps visualize this.
During certain hours of the day there may be high availability of renewable energy. A few hours later, when solar generation drops, the operation's consumption may remain high.
The energy exists. The demand exists.
“The challenge is making the two meet at the right moment.”
This is exactly where storage starts to change the traditional logic.
Instead of energy meaning only producing and consuming, a third possibility emerges: producing, storing and deciding when to use it.
The impact lies in the lack of flexibility
An inflexible operation depends entirely on the conditions available at that moment.
If demand increases, it needs to be met.
If an outage occurs, the operation suffers its effects.
If a given time slot has a higher energy cost, consumption still happens anyway when the process cannot be shifted.
If renewable energy is available in one period and there is consumption need in another, the two events simply do not meet.
This rigidity has a cost.
Sometimes it shows up clearly on the bill.
In other situations, it shows up as a production stoppage, dependence on fuels, infrastructure sizing, loss of productivity, or the inability to operate more efficiently.
That is why the discussion about storage should not start with: “Which battery should be installed?”
It should start with another question: “Where is the lack of energy flexibility generating cost, risk, or limiting this operation?”
This difference completely changes the quality of the analysis.
A battery can have more than one function
Storage has a particularly interesting characteristic: the same asset can perform different functions throughout its operation.
Depending on the technical characteristics, consumption profile and conditions of each facility, it can contribute to:
- continuity of critical processes;
- management of power peaks;
- shifting consumption between different periods;
- better use of renewable generation;
- reduced dependence on fuel-based generation;
- greater operational predictability;
- support for facilities with electrical infrastructure limitations;
- greater capacity to manage consumption and demand.
That is why storage has been gaining ground in electrical systems around the world.
Not because every company needs to install batteries.
But because more and more operations are starting to place economic value on flexibility.
The most important question is not the size of the battery
Power and capacity are fundamental to any storage project. But they should come later.
First, you need to understand the behavior of the operation.
| When do the highest consumption levels occur? |
| Which loads are truly critical? |
| How much does an outage cost? |
| Is there self-generation? |
| Is there a significant difference between the times energy is used? |
| Is production expansion planned? |
| Are there restrictions in the electrical infrastructure? |
| How long does a given load need to remain powered? |
Without understanding these answers, sizing storage based only on installed power or monthly consumption can lead to a solution that is technically possible but economically unwise.
“Technology should respond to the problem. The problem should not be adapted to the technology.”
The real benefit is having more options
For decades, most consumers had few alternatives regarding how they used energy.
Energy arrived through the grid. It was consumed at the moment it was needed. And the company paid for the result at the end of the month.
The decentralization of generation, storage, digitalization and management systems are gradually changing this relationship.
The consumer is starting to gain decision-making capacity.
It can produce part of its own energy.
It can better track its consumption behavior.
It can reduce certain peaks.
It can store energy.
It can choose the most appropriate moment to use it.
And it can combine different energy resources according to the operation's needs.
This means the discussion stops being only about having energy available.
It also becomes about having the intelligence to decide how to use it.
Storing energy, at its core, is storing possibilities
This may be the main transformation brought about by batteries.
A battery does not produce energy.
It produces something that, for certain operations, can be equally valuable: time and flexibility to decide when to use the available energy.
And that is exactly why looking at storage only as backup may mean seeing only a small part of its potential.
The question, therefore, may no longer be: “Does a company need a battery?”
The more interesting question is:
“How much value could the operation capture if it had greater control over when it uses its energy?”
