Coal Fuel - Purchase, Inventory Tracking & Consumption at Coal Plant
Recording coal purchases into inventory, and subsequent consumption as boiler fuel at a coal-fired power plant, using weighted-average cost method for inventory valuation.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Coal Inventory (Purchased) | Asset (+) | 18,500,000.00 | - |
| Accounts Payable - Coal Supplier | Liability (+) | - | 18,500,000.00 |
| Fuel Expense - Coal (Consumed at Plant) | Expense (+) | 16,200,000.00 | - |
| Coal Inventory (Consumed - Weighted Average) | Asset (-) | - | 16,200,000.00 |
💡 Accountant's Note
Coal is purchased in bulk (long-term supply contracts with mines, or spot market), shipped by rail or barge, and stockpiled at the plant. Inventory is valued using the weighted-average cost method (most common for utilities) or FIFO. Consumption is tracked by tonnage burned and BTU content (different coal qualities have different BTU values — Appalachian vs. Powder River Basin coal). Environmental compliance costs (sulfur removal, ash disposal) are separately tracked from fuel costs. As coal plants retire, coal inventory liquidation and contract termination costs are significant issues.
Practitioner & Systems Framework
💻 ERP Architecture
Coal stockpile management requires physical inventory counts (by survey or measurement of pile dimensions × density). Significant differences between book and physical inventory require investigation. Long-term coal supply contracts may contain take-or-pay provisions — if the plant runs less than contracted volumes, the utility must still pay for undelivered coal. These contract obligations affect fuel cost projections.
⚠️ Audit Flags
Physical inventory observation of coal piles is required for material inventory balances. Auditors may require an independent survey of the stockpile. Coal quality variance (actual BTU content vs. contract specification) can affect both the quantity consumed and the cost calculation — test lab analysis records are reviewed.
📄 Required Documentation
Coal supply contracts, delivery confirmations (tonnage and BTU content from lab analysis), rail/barge delivery records, inventory count documentation (survey or pile measurement), weighted average cost calculation, FERC Account 501 coal fuel entries.
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