A battery container is the solution for large-scale energy storage, but what does such a system really cost? In addition to purchasing the battery container itself, you also need to account for transport, installation, connection, and any additional facilities. As a result, costs can vary significantly per project. In this blog, we provide insight into the cost structure, what additional costs you can expect, and show some practical examples. This way, you know exactly what you're in for before you invest.

What does the cost structure of a battery container consist of?

The total cost of a battery container is made up of various components:

• Basic container costs: Depending on storage capacity (e.g., 100 kWh, 500 kWh, 1 MWh) and brand.

• Transport costs: Depending on distance, weight, and accessibility of the location.

• Installation costs: Including placement, foundation, and technical connection.

• Configuration and commissioning: Software settings, charging schedules, and connection to the grid or solar panels.

• Maintenance contract (optional): For service, monitoring, and quick repairs.

For smaller systems, costs often start around €40,000 to €60,000 excluding VAT. Larger industrial installations can run up to several hundred thousand, depending on specifications.

What additional costs should you consider?

In addition to purchase and installation, there are additional costs you need to consider in advance:

• Foundation: Concrete slab or stelcon plates average an additional €2,000 to €5,000.

• Medium voltage connection: Large installations may require a connection to an MV grid, with additional costs for transformers.

• Permits: For permanent installation, a building or environmental permit may be required.

• Security: Think of camera surveillance or fencing around the battery container.

• Monitoring software: For real-time insight into storage and usage, sometimes with annual license fees.

By clearly mapping out these additional costs beforehand, you won't be faced with surprises during implementation.

What are examples of total project costs?

To give you a better picture, some practical examples:

• Small project location (100 kWh):
  Basic container price: €45,000
  Transport + placement: €4,000
  Foundation + connection: €3,000
  Total estimate: approx. €52,000 excl. VAT

• Medium-sized construction site (500 kWh):
  Basic container price: €120,000
  Transport + placement: €6,000
  Foundation + MV connection: €12,000
  Total estimate: approx. €138,000 excl. VAT

• Large industrial site (1 MWh):
  Basic container price: €230,000
  Transport + placement: €10,000
  Foundation, medium voltage, cooling: €25,000
  Total estimate: approx. €265,000 excl. VAT

Note: Exact prices may vary due to inflation, customization options, and location requirements.

Why investing in a battery container is worthwhile

Although the investment in a battery container seems substantial, it yields many benefits in the long term:

• Lower energy costs: Through peak shaving and own power storage.

• Independence: Less dependent on fluctuating grid prices.

• Sustainability: Optimization of own sustainable generation.

• Grid congestion solution: Important for overcrowded networks.

Moreover, in some situations, subsidy schemes or tax advantages are possible, such as the EIA (Energy Investment Allowance).

Frequently asked questions about the costs of battery containers

What does a small battery container cost?
Expect about €40,000 to €60,000 excluding transport and installation.

Are transport costs always included?
No, they are often calculated separately based on distance and accessibility.

How expensive is the grid connection?
For low voltage connection, it's manageable, but medium voltage can cost an extra €10,000 to €20,000.

Can I get a subsidy for a battery container?
In some cases, yes, for example through the Energy Investment Allowance (EIA).

Are maintenance costs mandatory?
No, but a maintenance contract is highly recommended for long-term reliability.

Is a permit required for placement?
Often not for temporary use, usually yes for permanent installation.

How long does it take to place a battery container?
With good preparation, placement, and commissioning can be done within 1 to 3 days.

What most influences the price?
Capacity (kWh), type of inverters, location, and additional requirements such as cooling or fire protection.