What this category of data looks like
Energy storage-related financial report data mainly comes from public periodic reports of listed companies on domestic and overseas stock exchanges, and operation monitoring data released by industry associations. The update schedule is as follows: quarterly reports are updated 1 to 2 months after the end of each quarter, and annual reports are disclosed by April 30 of the following year.
Document structures include modules such as business segment revenue details, production capacity and utilization rate, raw material procurement costs, and ongoing project progress. Core fields include "energy storage system sales revenue", "cumulative installed capacity", and "unit energy storage system cost", with corresponding units of ten thousand yuan, GW, and yuan/kWh. A single structured disclosure document is usually dozens to over 100 pages long. Bulk structured data files can reach hundreds of megabytes in size.
What constraints do these characteristics impose on HTTP interfaces and external systems
Data sources are scattered, involving public interfaces of stock exchanges and industry database interfaces. Multi-source interface aggregation logic must be configured to reduce business interruption risk caused by single interface dependency.
The non-real-time quarterly and annual update rhythm requires the interface polling interval to be set to no less than 7 days, to avoid triggering interface rate limiting policies. Energy storage financial reports include exclusive unit fields such as GW and yuan/kWh. Interface field verification rules must be configured to ensure that returned data units match business fields.
Single disclosure documents are lengthy. When pulling data in bulk, the interface request body size limit must be adapted, and the interface timeout period must be extended to complete full data parsing.
How to set the configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Disclosure documents related to energy storage financial reports are lengthy, with conventional parsing time exceeding 300 seconds. 600 seconds can cover the complete parsing process |
UPLOAD_FILE_MAX_SIZE | 2000 MB | A single complete energy storage financial report PDF or structured data file may exceed 1000 MB. 2000 MB can meet bulk upload requirements |
API_REQUEST_INTERVAL | 86400 seconds | Energy storage financial reports are updated quarterly. Polling daily will not trigger rate limits, while ensuring data timeliness |
FIELD_MAPPING_RULE | Map according to energy storage-specific fields | Energy storage financial reports include fields such as "cumulative installed capacity" and "unit energy storage system cost" that are not present in general financial reports. Custom mapping rules are required to adapt to external systems |
RESPONSE_VALIDATE_SWITCH | Enabled | It is necessary to verify that the units of the interface return fields match the business requirements to avoid data format errors |
MAX_BATCH_RECORDS | 10 | Pulling too many structured data records in a single request will increase interface load. 10 balances efficiency and stability |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require specific analysis, and it is recommended to test on your own samples before finalizing.
Three common mistakes
- The symptom is receiving a
413 Request Entity Too Largestatus code when calling the file upload interface. The cause is that theUPLOAD_FILE_MAX_SIZEconfiguration was not adjusted, resulting in the uploaded file exceeding the size limit allowed by the interface. - The symptom is that energy storage business fields received by the external system are empty. The cause is that
FIELD_MAPPING_RULEwas not configured, and the parsed energy storage-specific fields were not mapped to the standard field system of the external system. - The symptom is frequent rate limit error reports from interface calls. The cause is that the set
API_REQUEST_INTERVALis too short, exceeding the call frequency limit of third-party data interfaces.
How to confirm the configuration is correct
- Upload a 1500 MB energy storage financial report document, check that the interface returns a
200 OKstatus code, and the parsed fields include "energy storage system sales revenue". - Call the data pull interface, check that the units of the returned fields match the preset GW and yuan/kWh.
- Call the interface at 24-hour intervals, check that no rate limit error is triggered, confirming that the
API_REQUEST_INTERVALconfiguration takes effect. - Map the parsed fields to the external system, check that the external system can normally receive and display energy storage-related business data.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.