Figure 5From: Techno-economic evaluation of stillage treatment with anaerobic digestion in a softwood-to-ethanol processEthanol production cost (SEK/L) as a function of co-product prices. Co-products: (A) electricity, (B) upgraded biogas, (C) pellets and (D) district heat. A summary of the scenarios is given in Table 1. REF: reference case; SEK: Swedish kronor.Back to article page