kredyty z tytułu redukcji emisji gazów cieplarnianych uzyskanej w wyniku produkcji produktów ubocznych o współmiernej wartości ekonomicznej
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Co-product Many ore deposits are worked for more than one element. Where those elements are of almost equal economic significance they are called ‘co-products
http://www.encyclopedia.com/science/dictionaries-thesauruses...

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CO-PRODUCTS
Displacement effects of animal feed by-product
As discussed previously, animal feeds co-produced with
maize ethanol can offset the need for conventional livestock
feeds, including maize, soybean meal and urea, and in fact
may offer improved animal performance when included in
animal diets. Sales of ethanol co-produced animal feeds
in the animal feed market reduce the energy and environmental
impacts of producing conventional animal feeds.
Incorporating the displacement of conventional feeds by
DGS and other animal feed into the LCA of ethanol therefore
provides GHG “credits” for the biofuel. These credits
are considered direct credits that are simulated in GREET.
http://www.fao.org/docrep/016/i3009e/i3009e.pdf
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DGS Distillers grain with solubles
GREET Greenhouse gases, regulated emissions, and energy use in transportation
GHG greenhouse gas
LCA Life-cycle Analysis

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Note added at 2 hrs (2017-03-10 14:02:02 GMT)
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Here, "credit" includes an "energy credit" as well.

2.3.3 Co-product credits
Many processes produce not only the required fuel product but also other streams or “co-products”. This is the case for biofuels from traditional crops such as bio-diesel from rapeseed. In some cases, e.g. soya it is not always clear whether the fuel or non-fuel products are the most important. In line with the philosophy described above we endeavoured to represent the “incremental” impact of these co-products. This implies that the reference scenario must include either an existing process to generate the same quantity of co-product as the alternative-fuel scenario, or another product which the co-product would realistically replace.
The implication of this logic is the following methodology (Figure 2.3.3):
• All energy and emissions generated by the process are allocated to the main or desired product of that
process.
• The co-product generates an energy and emission credit equal to the energy and emissions saved by not producing the material that the co-product is most likely to displace.
For example, in the production of bio-diesel from oil seeds, protein-rich material from e.g. oil seeds pressing are likely to be used as animal fodder displacing soy meal
http://iet.jrc.ec.europa.eu/about-jec/sites/iet.jrc.ec.europ...

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Note added at 3 hrs (2017-03-10 14:20:36 GMT)
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Widocznie istnieje słowo współprodukt w języku polskim

buraki cukrowe, o ile produkt pośredni jest wykorzystywany do wytworzenia produktów energetycznych i każdy współprodukt lub produkt uboczny zawierający cukier jest wykorzystywany zgodnie z rozporządzeniem Rady (WE) nr 318/2006,
http://gajanet.pl/przyjazne-rolnictwo/platnosc-do-upraw-rosl...

więc można skrócić odpowiedź w następujący sposób
kredyty z tytułu produkcji współproduktów