Quotation scope
Request a configuration—not just a kW/kWh price.
A useful BESS quotation connects one of eight documented product configurations to the operating mode, electrical boundary, site conditions, evidence and responsibility matrix.
RFQ inputs
Information buyers should send before asking for price.
Incomplete inputs create quotations that look comparable but contain different equipment and assumptions.
Application and operating modes
Peak shaving, PV capture, backup, microgrid, EV charging or UPS duty; dispatch windows, reserve and success criteria.
Measured electrical data
Interval load curve, PV/charger profile, critical loads, grid voltage/frequency, transformer and generator data.
Site and environment
Country, ambient range, altitude, corrosion exposure, indoor/outdoor placement, footprint, access and cable routes.
Delivery and evidence
Incoterm, schedule, certification list, drawings, FAT witness, packing, commissioning and training responsibility.
Buyer checklist
Copy this list into the project brief.
If a field is unknown, mark it as open. Hidden assumptions are harder to price and manage than visible gaps.
| Input | What to provide | Status |
|---|---|---|
| Project identity | Country, site type, end user, contact, currency, Incoterm and target delivery date | Required |
| Operating objective | Peak shaving, PV self-consumption, backup, microgrid, EV charging or UPS; priority order | Required |
| Load data | At least 15-minute interval data, peak/base load, operating hours and seasonal behavior | Required |
| PV / charger / generator | Rated power, production or utilization profile, control interface and operating sequence | If applicable |
| Grid and transformer | Voltage, frequency, phase/wire system, transformer rating/impedance, connection point and SLD | Required |
| Backup boundary | Critical-load list, motor/transformer inrush, outage duration, reserve SOC and transfer time | If backup is required |
| Site conditions | Ambient temperature, humidity, altitude, corrosion category, seismic/wind data and available footprint | Required |
| Installation and logistics | Indoor/outdoor, foundation, access route, lifting limit, cable entry, crane and site labor | Required |
| Codes and certificates | Grid code, fire requirements, product certifications, transport and customs documents | Required by jurisdiction |
| Delivery evidence | Drawing list, FAT plan, witness/remote FAT, packing record, commissioning and training | Required |
Starting configuration
Choose the closest documented platform.
The final architecture can change after voltage, duty, derating and site review; the starting model keeps the first quotation grounded.
Responsibility matrix
Make included, configurable and site scope visible.
Use the quotation to expose interface ownership before purchase order and production.
| Scope group | Typical items | Quotation action |
|---|---|---|
| Integrated product scope | Battery racks/packs, BMS, PCS where specified, EMS, liquid cooling, fire system and enclosure | Confirm exact model and bill of materials |
| Project-configured scope | Transformer/step-up unit, STS/ATS, switchgear, metering, protection, protocols, cable entry and auxiliary power | List as included, optional or excluded |
| Site and owner scope | Foundation, unloading/lifting, field cables, earthing, network, utility study, permits, fire-water and civil works | Assign owner and interface date |
| Factory evidence | Datasheet, drawings, document register, FAT, serial records, packing and manuals | Define approval and witness points |
| Field services | Supervision, commissioning, parameter setup, performance test, training and warranty response | Define days, location and travel terms |
Quotation preparation
Prepare comparable inputs before comparing price.
A credible RFQ links measured data, electrical boundary and cost responsibility to the same project scope.
Load profile for a BESS quotation
Prepare interval demand, tariffs, PV, generators, critical loads and operating schedules.
Read guideCommercial battery storage cost
Separate battery, PCS, enclosure, electrical BOS, delivery and commissioning cost drivers.
Read guide400 V vs 690 V BESS
Review current, cable, switchgear, transformer and AC interface implications.
Read guideQuotation questions
What a comparable BESS offer should answer.
Ask every supplier to answer the same boundary questions.
Is usable energy or only rated energy stated?
The offer should distinguish rated energy, usable energy, reserve SOC, cycle window and any end-of-life or ambient assumptions used for sizing.
Is the PCS inside the offered product?
The 105–250 kW cabinets and 100 kW hybrid platform include a defined PCS architecture. Container projects use a separate PCS step-up architecture. The quotation must identify the exact PCS, transformer and connection boundary.
What fire scope is included?
The documented platforms include detection and perfluorohexanone suppression inside the product. External fire-water, site alarm integration, ventilation interfaces and local fire-code requirements must be assigned separately.
Which documents should be approved before production?
At minimum: project datasheet, single-line, general arrangement, foundation/load data, cable and communication interfaces, responsibility matrix, document register and FAT plan.
Send one project brief. Get a clearer system boundary.
Include available load data, operating modes, target kW/kWh, grid single-line, site conditions, preferred configuration and expected delivery schedule.