Coal, LNG, Natural Gas, Electric Power, Nuclear
December 01, 2025
Platts to update Conventional Energy Index component weightings for 2026
Platts, part of S&P Global Energy, will update the weightings for some components under its Conventional Energy Index, following a review of the available statistics, effective Jan 2, 2026.
The index reflects the physical prices of the global primary energy mix from conventional energy sources such as oil, gas, coal and nuclear.
The weightings for these primary energy sources, shown in the table below, will be updated based on the latest annual consumption data (i.e. for year 2024) of the four energy sources published by Energy Institute in its 2025 Statistical Review of World Energy.
The index weightings reflect the proportion of global energy consumption by source, excluding renewables. The weightings are reviewed annually to keep the index representative of global supply and demand trends.
| Energy Source | Current Weighting | New Weighting (from 2026) |
| Crude Oil | 37% | 37% |
| Gas (including LNG) | 27% | 27% |
| Coal | 31% | 30% |
| Nuclear | 5% | 6% |
The following table describes the components of the Conventional Energy Index, symbols, currencies, the units of measurement and the conversion factors used, where relevant, and the respective weightings.
| Assessment | Symbol | Currency/Unit of Measure | Conversion Factor | Current Weighting | New Weighting (from 2026) |
| Dated Brent | PCAAS00 | $/b | 5.8 | 18.5% | 18.50% |
| Dubai M1 | PCAAT00 | $/b | 5.8 | 18.5% | 18.50% |
| Dutch TTF Month Ahead | GTFWM10 | $/MMBtu | 1 | 9% | 9% |
| Henry HubFlow Date | IGBBL21 | $/MMBtu | 1 | 9% | 9% |
| LNG Japan/Korea DES (JKM) | AAOVQ00 | $/MMBtu | 1 | 9% | 9% |
| NEAT | JKTCA00 | $/MT | 27.78 | 31% | 30% |
| Uranium U308 Spot Canada M1 | AFUEM01 | $/lb | 180 | 5% | 6% |
Full details about the calculations and methodology of the index can be found in the Global Commodity Indices Specifications Guide here.
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