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Table 5 Annual cash flows in million Swedish Kronor

From: Effects of steam pretreatment and co-production with ethanol on the energy efficiency and process economics of combined biogas, heat and electricity production from industrial hemp

 

AD 

AD-R

SP-AD

SP-AD-R

Et-AD

Et-AD+

Costs

      

Feedstock

-381

-381

-381

-381

-381

-381

Capital

-127

-139

-116

-124

-195

-161

Chemicals

-22

-13

-35

-30

-42

-51

Enzymes

-

-

-

-

-48

-48

Utilities

-1

-1

-1

-1

-6

-1

WWT

-19

-5

-16

-10

-41

-41

Others1

-21

-21

-20

-21

-23

-22

Total cost

-570

-560

-570

-568

-736

-705

Incomes

      

Ethanol

-

-

-

-

255

255

Biogas

255

305

316

335

241

241

Electricity

48

46

19

18

0

1

District heat

66

72

50

51

29

23

Total income

368

423

386

405

525

520

Deficit

202

137

184

163

211

185

  1. A summary of the scenarios is given in Figure 3. 1 EUR ≈ 8.9 SEK.
  2. WWT: wastewater treatment.
  3. 1 ‘Others’ includes maintenance, insurance and labour.