It depends on how big the system is and what technology it uses. Most homes and small businesses pay between $6,000 and $23,000 for everything. This covers the battery, inverter, labor, and other parts.
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SourceRegister lists over 400 companies in the battery storage vertical for Finland, with data sourced from the PRH (Business Information System).
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Battery storage prices have gone down a lot since 2010. In 2025, they are about $200–$400 per kWh. This is because of new lithium battery chemistries. Different places have different energy storage costs.
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Recent pricing trends show standard industrial systems (1-2MWh) starting at $330,000 and large-scale systems (3-6MWh) from $600,000, with volume discounts available for enterprise orders.
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