Diesel Procurement Timing Calculator: 2026 UA Price Cycle + On-Farm Storage ROI + 20% Counterfeit Risk

How the calculation works

The calculator uses the UA annual diesel price cycle: the structural trough is mid-August to mid-October (the EU summer-driving season ends, the gasoline crack collapses and pulls gas-oil down, and the ДП-З winter-grade premium is not yet priced in). The peak is February to April (spring sowing rush + EU refinery turnarounds + winter-grade grade price). The normal autumn-to-spring premium band is 8–12%, widening to 12–20% in dislocation years. Second pillar: the Institute of Consumer Expertise recorded 20% DSTU 7688:2015 non-compliance on UA retail diesel in late 2025 — up from near-zero at tier-1 networks in early 2024. BEB 2024–2025 enforcement documented a Kryvyi Rih clandestine mini-refinery (~100 t/day ≈ 120,000 L/day), a Chernivtsi mobile Mercedes Sprinter AZS (177,000 L falsified diesel / UAH 8 M damages), and the State Tax Service 2025 annual penalty total (UAH 463 M + 886 fuel licences suspended). Third pillar: on-farm storage math — the summer-to-spring gap of ≈ 8% × 74 UAH/L + 1 UAH/L winter-grade = ≈ 6.9 UAH/L gross savings per litre, minus a 0.75% degradation provision, divided by tank capex of 7–15 UAH/L returns the payback in months. Fourth: forward-contract hedge — lock 30–40% of the annual volume at 1.6–1.9 UAH/L (Scenario C of the 1,500 ha reference). Fifth: excise glide-path (Law №3878-IX) adds ≈2 UAH/L each January through 2028 (EU minimum €330/1000 L).

1. 1

   Enter hectares and consumption

   A typical UA cereals rotation burns 233 L/ha; 1,500 ha = 350,000 L/yr (the Batch 1C §3.3 reference case). Override consumption with your actual burn if known.

2. 2

   Pick a procurement strategy

   Spot = buy at the pump as needed. Forward = lock price 3–6 months out. On-farm storage = August-October bulk pre-buy into РГС tank. Mixed = 60% forward + 40% spot + РГС (delivers the full 700K–4M UAH/yr brief band).

3. 3

   Size the РГС tank (if chosen)

   New-tank capex is 7–15 UAH/L (РГС-10 m³ = UAH 90–140K single-wall, UAH 165–240K double-wall). Size for 2× daily burn plus a 10% safety margin — this is the 168-hour autonomy rule under Law №3817-IX.

4. 4

   Target operational-use month

   The month fuel is actually drawn — sowing (March–April), harvest (July–September), drying (October–November), or winter logistics (January–March).

5. 5

   Read the recommended buy window

   Structural window = mid-August to mid-October. In a dislocation year (Middle East + price at the peak) buy in August with a −6% discount; don't wait for September.

6. 6

   Cross-check the distributor shortlist

   OKKO / WOG / SOCAR = top tier (sulphur ≤4 mg/kg + B2B-direct channel). BRSM-Nafta is excluded: 2024 ICE samples at S 76–362 mg/kg and flash 45°C (standard ≥55°C), with material DPF and injector damage risk. Never buy spot-pump without a per-batch quality passport.