Specification
Hold usable capacity, rated power, duration and the depth of discharge constant, or mark the deviation.
Commercial energy storage system costs
VoltLink Supply lines up commercial energy storage system costs after the specification, quantity, delivered scope and document set are written the same way on every quotation. A headline price without those fields is not a comparison.
The desk is an independent sourcing partner. It does not manufacture packs, stock containers or set the price a factory will offer. Buyers use this page to decide which cost lines must be visible before award.
Briefing panel
- Specification. Usable kWh, rated kW, chemistry, DC voltage and enclosure rating.
- Quantity. Systems, racks or a project lot, plus spare-module policy.
- Destination. US site, delivery point and who unloads.
- Timing. Requested window, not a promised ship date.
Four fields that make a cost comparable
Quantity
State the unit. A per-kWh figure and a per-container figure are different commercial objects.
Delivered scope
Freight, duties, cables, fire-suppression adders, commissioning help and exclusions sit beside the equipment line.
Supplier documents
Datasheet, drawing, warranty text and any listing the buyer asked to verify travel with the price.
Evidence before the cost is trusted
Commercial energy storage system costs move when the quoted model changes. Ask for files that name that model.
- Price basis sheet. Currency, Incoterms or delivered duty, and what is excluded.
- Bill of material. Racks, PCS or bidirectional inverter, BMS, thermal management, and spare parts.
- Performance annex. Round-trip efficiency with the cycle named, and cycle life with temperature and C-rate.
- Warranty annex. Throughput cap, ambient derate and response time, written as supplier terms to review.
Cost disputes to keep visible
Two honest readings of the same RFQ should both stay on the worksheet.
| Question | One reading | The other reading |
|---|---|---|
| Unit price versus delivered scope | A lower equipment price can reduce acquisition cost when the scope truly matches. | A delivered comparison can show omitted freight, accessories and documents before award. |
| AC-coupled versus DC-coupled storage | AC-coupled blocks can suit a retrofit where PV and storage are controlled apart. | DC-coupled layouts can remove a conversion stage on a new build when the DC bus and inverter match. |
Neither reading is an award. Interconnection studies, fire review and structural checks stay outside this cost sheet. See project uses and the interface guide.
A hypothetical buyer request, not a completed job: a commercial site asks for 500 kW and 2 hours, usable energy stated at 90 percent depth of discharge, 480 V AC point of connection, delivery to a Texas yard, and a budget written as USD for the whole order. The table gives independent example entries, not a validated configuration or supplier offer. Mark capacity and power as per-container or order totals before comparing quotes. Supplier lead time, model ratings and delivered price remain open.
| Cost column | Figure to align |
|---|---|
| Usable capacity | 1,000 kWh at 90 percent depth of discharge |
| Rated power | 500 kW continuous |
| Duration | 2 hours |
| Bidirectional inverter | Included, 480 V |
| Maximum system voltage | 1,500 V DC question |
| Round-trip efficiency | 91 percent AC with auxiliaries in the test |
| Cycle life | 7,000 cycles at 0.5 C and 25 C |
| Thermal management | Liquid, 7 kW auxiliary called out |
| Enclosure rating | NEMA 3R yard containers |
| Battery management system | Firmware revision named on the quote |
| Spares | 6 modules, priced as their own line |
| Freight | Texas yard, one truck per container |
| Cables | 15 m AC run included or excluded |
| Warranty question | 10 years or 7,000 cycles, whichever the supplier writes |
| Requested timing | 18 to 24 weeks, not a ship promise |
| Whole-order budget | USD 900,000, currency and basis labeled |
| Per-kWh budget alternative | USD 280 per kWh usable, not both at once |
| Quantity | 4 containers |
| SCADA | 20 points in the controls adder |
| Grid-forming inverter | Optional adder, priced apart |
| Ambient | 45 C design day |
| Altitude | 300 m, no altitude adder assumed |
| Mass | 26 t per container for freight class |
| Footprint | 6.058 m by 2.438 m |
Hand the cost brief across
Request factory quotes with the specification, quantity, destination, timing and the cost columns you need returned. Optional budget and supplier preference ride inside the same requirements field.
The public note on how to compare a storage quotation uses the same columns.