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Table 7 Gross profit calculation for the model 500 kW biogas plant [EUR/a]

From: Using aquatic plant biomass from de-weeding in biogas processes—an economically viable option?

Item Case 1
Maize silage 100%
Case 2
90/10 Maize/Elodea
Case 3
90/10 Maize/Elodea-straw mix
1. Revenues from feed-in-tariff 797,600 768,739 793,586
2. Cost of input material, all in 371,058 236,742 429,570
3. Cost of digestate disposal 39,425 65,735 44,611
4. Gross profit p.a. 387,118 466,262 319,405
5. Gross delta profit/(loss) 0 79,144 (67,713)
6. Elodea taken on [tFM] 0 6944 1031
7. Per tonne profit/(loss) (5 ÷ 6) 0 11.40 − 65.68