Key takeaways
- Provide twelve months of timestamped interval kW data when available.
- Separate total facility load, critical load, PV generation, generator and grid measurements.
- Include tariff, operating schedule, data gaps and meter location so the model can be reproduced.
Decision framework
Use this table to align the technical question before comparing equipment or supplier proposals.
| Data set | Preferred format | Why it matters |
|---|---|---|
| Facility demand | CSV/XLSX with timestamp and kW at 15-minute or finer intervals | Defines peaks, daily shape, seasonality and energy |
| PV generation | Timestamped AC production or inverter export | Shows charging surplus and self-consumption opportunity |
| Critical loads | Separate feeder profile or equipment schedule | Defines backup power, duration and transfer duty |
| Tariff | Demand charges, energy rates, time periods and export rules | Connects dispatch to economic value |
| Site operations | Shifts, shutdowns, planned expansion and abnormal periods | Explains outliers and future load changes |
Export the right interval data
Request interval demand from the utility portal, revenue meter, building management system or power-quality meter. Preserve the timestamp, timezone, interval length and measurement unit. If both kW and kWh are exported, label each column clearly and state whether values are interval averages or instantaneous readings.
Twelve months captures seasonal production, weather and tariff effects. Finer data may be needed for transfer, generator support or fast process peaks, but a consistent 15-minute series is a strong starting point for commercial screening.
Add the operating context
Mark weekends, holidays, shutdowns, maintenance periods and abnormal events. Provide shift schedules, planned equipment additions, contract demand, transformer rating and known power-quality constraints. Without this context, the model may treat an outage or data gap as a real load reduction.
For PV sites, provide generation and curtailment data separately where possible. For hybrid sites, identify generator rating, minimum loading, fuel objective, start logic and which loads must remain online during grid loss.
Check data quality before submission
Plot the time series and look for missing timestamps, duplicate rows, negative values, flat-lined meters and sudden unit changes. Compare monthly energy calculated from the interval file with utility bills. Record every correction instead of silently editing the data.
Identify meter location. A main incomer profile, a production feeder and a critical-load panel answer different questions. If the project uses multiple meters, provide a simple diagram showing how they relate.
Translate the profile into an RFQ
State the intended outcome: grid demand limit, PV self-consumption, backup duration, generator optimization or a combination. Ask the supplier to return assumed baseline, selected PCS power, usable energy, SOC policy, expected dispatch and unresolved data gaps.
Attach the cleaned interval file to the quotation scope together with site voltage, ambient conditions, layout and delivery information. This gives every bidder the same basis.
Project requirements, local codes and site conditions take precedence over this general buyer guide. Final system design should be reviewed by qualified project professionals.
Starting configurations
Compare documented platforms.
Use these configurations for screening, then confirm usable energy, electrical boundary and responsibility scope for the site.
105 kW / 233 kWh Cabinet
Compact 400 V AC cabinet platform for distributed C&I sites.
View product →100 kW / 233 kWh Hybrid System
PV-storage-diesel architecture with PCS, DCDC/MPPT, STS and EMS coordination.
View product →1.25 MW / 3.354 MWh Container
Energy-led container platform with a 690 V PCS stage and project step-up interface.
View product →Buyer questions
Frequently asked questions
Is a monthly electricity bill enough for a BESS quote?
It supports early screening but usually does not show peak duration or daily shape. Interval data is needed for credible power and energy sizing.
What interval length should the load profile use?
Fifteen-minute data is a useful commercial baseline. Faster data may be required for transfer, generator or short process events.
How much load history should be provided?
Twelve consecutive months is preferred so the model captures seasonal and operating changes.
Should PV data be included?
Yes. Timestamped PV generation and export data shows charging opportunity, self-consumption and curtailment constraints.
Match the requirement to a documented configuration.
Use measured site data, a clear electrical boundary and a shared responsibility matrix to request a comparable proposal.