Coal Grades G1 to G17 Fully Explained | GCV, Ash, Pricing & Sampling | Chapter 7
Overview
Indian coal is classified into grades — historically A to G, now largely standardised as G1 to G17 — based on Gross Calorific Value (GCV), which directly determines pricing in e-auctions and linkage sales.
Topics Covered
- How GCV bands define the G1–G17 grading system
- Why ash content and moisture affect grade and price
- Sampling and grade-verification procedures at the mine
- How grade slippage disputes are handled
- Using grade knowledge to bid more accurately
Who this is for: Coal buyers who want to understand pricing logic tied to coal grade before bidding.
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