FAQ

Yes, if it meets UL/IEC safety standards and is installed with certified fire protection and ventilation.

Grid energy storage, also known as large-scale energy storage, is a set of technologies connected to the electrical power grid that store energy for later use. These systems help balance supply and demand by storing excess electricity from variable renewables such as solar and inflexible sources like nuclear power, releasing it when needed. They further provide essential grid services, such as helping to restart the grid after a power outage.

Another key difference between utility-scale and C&I projects is the off-taker. Utility-scale projects primarily serve utility companies, whereas C&I projects supply power to corporate organizations and industrial plants.

As of 2024, the average price for a utility-scale BESS is approximately $148/kWh. For a 1 GWh system, this translates to $148 million. It's important to note that this cost includes not just the batteries themselves, but also the inverters, control systems, and other balance of system components.

BESS (Battery Energy Storage Systems) consist of groups of batteries connected both to a power generation plant and to the distribution or transmission grid. They are, in essence, "reservoirs" in which electricity is stored when it is produced and then fed into the grid at another time.

BESS prove particularly useful in conjunction with renewable energy systems, such as photovoltaic or wind power, which have peak generation times that are not necessarily synchronized with the users' needs. With these devices, it is therefore possible to store surplus electricity and then allow it to be used or fed into the grid when needed. They can be used in small-scale, residential, so-called "behind the meter" solutions, for example in conjunction with domestic renewable systems, or in large-scale solutions that are directly connected to the distribution or transmission grid.

● Electricity stored in BESS can be used in a number of situations. First and foremost, to balance demand fluctuations and synchronize them with intermittent generation from renewable sources. In this function, they are also useful for regulating electricity costs: storing energy at times when the kWh cost is highest and releasing it when it is lowest incentivizes use during times when tariffs are cheapest, resulting in substantial savings for consumers. 
● The benefits also affect the energy market and supply chain, whereby consumption is distributed more evenly throughout the day, avoiding overloading plants and the grid. This is known as "arbitrage" in the energy market.
● Furthermore, storage systems are useful as backup solutions in the event of outages or to restart production in the event of a blackout. They can also be used to stabilize the frequency and voltage of the grid when distribution anomalies or imbalances occur.

In general, BESS are also useful for communities because of a whole range of indirect benefits they generate. They are in fact environmentally sustainable, producing no pollutant emissions, not requiring the construction of large infrastructures and having minimal environmental impact. They enable local reliance on traditional fossil fuels to be reduced, and they also make the power grid more efficient and stable, protecting it from malfunctions or blackouts.

BESS are one of the most efficient technologies in the electricity production chain. Indeed, they make it possible to avoid waste and make full use of the potential of renewable sources and the distribution grid. They have also experienced remarkable technological development. Over the past decade, the prices of the batteries they use have fallen by almost 90%, while their energy density, that is, the amount of energy stored relative to mass, has increased by more than 50%. They are also highly safe systems.

In environmental terms, storage systems are highly sustainable. The lithium-ion batteries they use are recyclable.