Turnkey Storage Fell 31 Per Cent to $117/kWh. In America It Is $219.

Written 26 August 2026. The survey figures below are full-year 2025 assessments published at the end of that year. They describe where prices landed, not where a quotation you receive this month will land — see the last section.

BloombergNEF’s annual cost survey put the global average price of a turnkey battery energy storage system at US$117 per kWh in 2025, a fall of about 31 per cent in a single year. Ember, working the problem separately, assessed a complete grid-connected system at roughly US$125 per kWh as of October 2025 for four-hour-plus utility-scale projects in markets outside China and the United States.

Two houses, two methods, answers within seven per cent of each other. That agreement is worth more than either number on its own.

Underneath the US$117 global average sit three very different markets. BNEF put turnkey system prices at about US$73 per kWh in China, US$177 per kWh in Europe and US$219 per kWh in the United States.

That is a three-fold spread on the same technology, in the same year, largely from the same cell suppliers. Whatever explains it, it is not the battery.

Ember’s breakdown says what it is. Of their US$125 per kWh, roughly US$75 is core equipment shipped from China — the enclosure, the power conversion system, the energy management system — and roughly US$50 is installation and grid connection. The equipment half is a globally traded good and prices much the same everywhere. The other half is local labour, local civils, local permitting, local grid queues and local tariffs, and that is where the markets diverge.

India buys the equipment half at close to the low end of that range and then adds freight, customs duty, and — on grid-scale tenders — a domestic content requirement. It does not add American or European labour rates. So the landed number should sit well below the US and European figures and above the Chinese one, which broadly matches what Indian tenders have been clearing at.

The domestic content requirement is the part worth watching, because it is a deliberate decision to pay more now for capacity later. Wood Mackenzie has put the cost of taking a 100 MW two-hour project from the current 20 per cent domestic content to 100 per cent at roughly 30 per cent on total capital cost. That is the price of the industrial policy, and it is covered in our note on the gap between India’s tender pipeline and its cell capacity.

We wrote two days ago that cell quotations have shortened to fourteen days and that near-term system prices are expected to rise. Both things are true, and holding them together is the whole skill of reading this market.

• •Different periods. The survey figures are full-year 2025. The tightness is 2026. A steep fall followed by a modest rise is an ordinary shape for a commodity-linked product, and it is not a contradiction.
• •Different layers. Cells are under 40 per cent of a turnkey system in reported European builds. Cell prices can rise while system prices fall, if the non-cell half is falling faster — which is exactly what larger cell formats and better integration have been doing.
• •Averages lag. An annual average is made of contracts signed months earlier. It tells you what the market cleared at, not what it is offering today.

• •Ask which of the two halves a quotation is competing on. A supplier who is cheap on equipment and vague on installation, civils and connection has not quoted the expensive half.
• •Do not benchmark an Indian quotation against a headline global average. The average is an artefact of mixing a US$73 market with a US$219 one, and it describes nobody.
• •Treat a survey number as a sanity check, not a target. If a bid is far below the band for your market, the difference is in scope, warranty or cell grade, and it is worth finding out which before signing.
• •For behind-the-meter systems the local half is proportionally larger, not smaller. A factory rooftop or a basement plant room is a construction project with a battery in it.

None of this changes the direction of travel. Storage has become dramatically cheaper and is still getting cheaper in the places that have learned to build it. The lesson from the spread is simply that the learning is local, and that a country importing the hardware still has to do its own half of the work.