Romanian company Prime Batteries has been included for the first time in BloombergNEF’s global list as a Tier 1 supplier of energy storage solutions. The news was reported by Ziarul Financiar on February 6, 2026, noting that the ranking concerns suppliers whose equipment is used in battery energy storage projects.
In BloombergNEF’s methodology, Tier 1 is primarily a measure of market acceptance and “bankability”—meaning that a company’s products are being deployed in large-scale projects that pass standard procurement and financing processes. To qualify, a manufacturer must, over the past two years, have delivered own-brand products to at least six projects of ≥10 MW or ≥10 MWh, involving at least three independent buyers (not affiliated with the manufacturer).
BloombergNEF also stresses that the list is not a quality endorsement and does not replace technical or financial due diligence; it is meant as a market signal of which suppliers are delivering to projects that are actually being built.
Being classified as Tier 1 is often treated as a strong argument in discussions with investors, banks, and major customers (such as renewable developers and grid operators), because it indicates that a manufacturer’s solutions are being used in projects of meaningful scale. In practice, it can help with export expansion and participation in tenders for large energy storage deployments across Europe.
According to the report, Prime Batteries began production in 2016 in Cernica. Among key milestones, the paper mentions EIT InnoEnergy joining the shareholder structure in 2022, followed later by an investment from T2Y Capital. The founders—Adrian Polec and Vicențiu Ciobanu—are said to retain control of the company. For 2024, the newspaper cites around 276 million lei in revenue and 51 million lei in net profit.
The report also notes that at the turn of 2025/2026, Prime Batteries established a joint venture with South Korean company Top Material to produce so-called active material—a key battery component—with the project located in South Korea.
