HiQLCD 1.5.0

Overview

What's new

HiQLCD 1.5.0 contains 46,060 datasets (CUT_OFF), an increase of 14,316 over 1.4.1 (45.1%). It expands coverage of chemicals, non-ferrous metals, building materials and electrical equipment; 28,703 datasets carry data quality scores, a coverage rate of 62.3%.

• Chemicals: Adds 4,890 datasets, with representative reference products 硝酸钠; PE树脂; 碳酸氢钠; 钛白粉，金红石型; 磷酸铁锂.

• Non-ferrous Metals: Adds 3,213 datasets, with representative reference products 金; 镍; 原镁; 锌; 锰矿石.

• Building Materials: Adds 2,817 datasets, with representative reference products 预拌混凝土; 普通硅酸盐水泥; 火山灰质硅酸盐水泥; 矿渣硅酸盐水泥; 硅酸盐水泥.

• Electrical Equipment: Adds 1,155 datasets, with representative reference products 避雷器; 断路器; 电压互感器; 电流互感器; 绝缘子. The added datasets cover 35 activities.

• Water Supply: Adds 136 datasets, with representative reference products 自来水; 自来水厂.

• Waste Treatment: Adds 177 datasets, with representative reference products 污水管道; 城市固体废弃物; 沉碲尾料; 废有机玻璃; 废轮胎，用于回收.

Comparison: 1.4.1 to 1.5.0, CUT_OFF. Source: Sources.

Official release notes

Translated from the official Chinese release notes.

• Adds more than 12,000 datasets across six sector groups: chemicals, steel and non-ferrous metals, electrical equipment, transport, water supply and drainage, and waste treatment (CUT_OFF model only). Also updates characterization factors for selected LCIA methods.
• Adds or improves 150+ chemical entries across plastics and additives, basic chemicals, industrial gases and battery materials; includes targeted improvements to key datasets such as sulfuric acid and liquid oxygen.
• Adds or improves 100+ steel and non-ferrous metal entries, including ores, concentrates and smelting products for copper, lead, zinc, tin and nickel.
• Adds 35+ electrical equipment entries covering towers and poles, overhead lines, instrument transformers, transformers, surge arresters, power capacitors and smart electricity meters.
• Adds 29 road freight datasets (multiple vehicle specifications × China III to China VI emission standards).
• Adds 136 water supply and 75 sewage pipeline construction datasets.
• Expands waste treatment and recycling categories and improves recovery chains for glass, copper, rubber and aluminium.

Source: Official release notes at carbonx.hiqlcd.com

Changes

Catalog, ID and result comparisons use 1.4.1 to 1.5.0; metadata and characterization-factor comparisons use 1.4.0 to 1.5.0. Datasets are counted by Dataset ID within each system model.

Dataset counts

Browse by sector: Sector index

Dataset IDs (1.4.1 → 1.5.0)

Source: ID Correspondence

Model totals: 1.4.1 / 1.5.0

Coverage changes

CUT_OFF contains 1,969 activities and 1,304 reference products. Geography codes rise from 411 to 419, adding 8 district or county codes. Sector tags rise from 35 to 37, adding New Energy Vehicles and Parts, and Water Supply. Additions include 29 road-freight truck datasets, 136 water-supply datasets and 75 sewer-pipeline construction datasets.

Geographic distribution

Source: Database Overview

New dataset geographies (1.4.1 → 1.5.0)

New reference products (1.4.1 → 1.5.0)

Basis: the union of database-wide new Product UUIDs across comparable models, grouped by sector. Sector pages retain the within-sector set differences and names.

Data quality and documentation

Impact assessment

Impact assessment methods with characterization factors change from 44 to 42; category indicators change from 770 to 676, with 621 retained, 55 added and 149 removed. Added methods include four USEtox v2.13 variants, IMPACT World+ v2.0.1 footprint, and Inventory results and indicators.

Characterization-factor records change from 228,044 in 1.4.0 to 206,606 in 1.5.0. Migration uses complete category-indicator identifiers to check method, unit and version.

Impact assessment methods

Source: Database Overview：LCIA Methods / Impact Categories

Method catalog changes (1.4.1 → 1.5.0)

Result changes

The comparison covers 31,612 shared CUT_OFF datasets and 621 shared category indicators from 1.4.1 to 1.5.0. For IPCC 2021 / climate change / GWP100, the median relative difference among 30,503 significant results is 2.4557%, with P90 at 16.444%. A total of 30,250 datasets (95.7%) have a mean relative LCI difference above 1%. Use a consistent version when comparing results in an upgraded project.

Files

Worksheet and column definitions

Revision 20261107T020200Z

HiQLCD 1.5.0 Public catalog files

Files	Scope	Format	Size
Database Overview ↓hiqlcd_Database_Overview_v1.5.0_r20261107T020200Z.xlsx Catalogs of datasets, reference products, geographies, flows and impact assessment methods. SHA-256 2d7fece2db3e3009a0a2b142e19a2784972df7b7c573e969d25ee33bb8c9be53	1.5.0CUT_OFF / CONSEQUENTIAL / EN_15804	XLSX	10.0 MB
ID Correspondence ↓hiqlcd_ID_Correspondence_v1.4.1-v1.5.0_r20261107T020200Z.xlsx Dataset ID correspondence between adjacent versions. SHA-256 ba40428eab43aafceb49a1ea957487823982e6c901884aa393f95b69ba6737b5	1.4.1 → 1.5.0CUT_OFF / CONSEQUENTIAL / EN_15804	XLSX	15.2 MB
Change Annex Metadata ↓hiqlcd_Change_Annex_Metadata_v1.4.1-v1.5.0_r20261107T020200Z.xlsx Metadata changes in dataset, flow and LCIA catalogs. SHA-256 27f18ba84995517e57f6f72781e2d7729903900aef73394f66f50962fbbcb4a9	1.4.1 → 1.5.0CUT_OFF / CONSEQUENTIAL / EN_15804	XLSX	7.5 MB

Known issues and limitations

Sector tags overlap. Inventory revisions are counted by changes in core inventory fields; metadata revisions are counted separately.

Confirmed issues

No formal issue register has been obtained.

Documentation completeness (r1 field coverage)

Score coverage counts populated fields. Pending documentation: original characterization-factor sources, independent method-implementation versions, formal method revision notes, and expert review notes for indicators with large changes. Historical result statistics retain the significance selection and rounding precision of the source report.

Source: Database Overview：Field Availability

Citation

hiqlcd, version 1.5.0. Specify the system model, dataset and source when citing results. See citation format.

Sources

Sources and exact file revisions are recorded below each table or statement. File definitions are available in File definitions.

Database Overview supplies the current catalog. Documentation-coverage and inventory-revision figures use the version’s process documentation; result comparisons use existing results aligned by dataset and category indicator.