Changes

Jump to navigation Jump to search
Line 1: Line 1:  +
[[Category:Eco-Score]]
 +
[[Category:Environment]]
 
== Introduction ==
 
== Introduction ==
 
In January 2021 the eco-score has been launched. The eco-score is a label that indicates the environmental impact of a product. It is based on the lifecycle of ingredients in a product and their relative impact. This impact has been assessed for the agricultural methods used in France.
 
In January 2021 the eco-score has been launched. The eco-score is a label that indicates the environmental impact of a product. It is based on the lifecycle of ingredients in a product and their relative impact. This impact has been assessed for the agricultural methods used in France.
    
Although the eco-score is based on France, OFF would like to extend the eco-score to other countries. This involves adding the country specific aspects for:
 
Although the eco-score is based on France, OFF would like to extend the eco-score to other countries. This involves adding the country specific aspects for:
* labels
+
* [[Eco-score labels - en|labels]]
* packaging
+
* [[Eco-score recycling - en|packaging]]
* logistics
+
* [[Eco-score transport - en|logistics]]
    
In this document the logistic aspects are investigated.
 
In this document the logistic aspects are investigated.
Line 38: Line 40:  
NST/R category 1/6 will be the most important category. For this category the most important transport mode is the route (table 4.7 (p67), figure 4.35 (p80)). The rail option is only used for 1% of the transport (I assume this will be the animal fodder part).
 
NST/R category 1/6 will be the most important category. For this category the most important transport mode is the route (table 4.7 (p67), figure 4.35 (p80)). The rail option is only used for 1% of the transport (I assume this will be the animal fodder part).
   −
What should be the road cutoff distance? This is the distance above which by sea is more advantageous (economically). Eurostat (figure 4.12, p62) gives an average of 200 km for food products. Interestingly, food products prefer the road for longer distances (figure 4.25, p72).
+
What should be the road cutoff distance? This is the distance above which by sea is more advantageous (economically). Eurostat (figure 4.12, p62) gives an average of 200 km for food products. Interestingly, food products prefer the road for longer distances (figure 4.25, p72). It is clear that road is a less used option when going further away (figure 4.13 (p63)).
 +
 
 +
==== Cutoff distance ====
 +
A cutoff distance of 2000km will be used for the moment. However more input on this number is needed. It might be interesting to see for each country, how many extra-country producers there are. And how far thos extra-country producers are away.
 +
 
 +
==== Boat type ====
 +
Various types of boats can be used to do the transportation. The eco-score document list three types and corresponding environmental impact. We implement this as follows:
 +
* Atlantic - we use this boat type for anything that has to pass over the Atlantic ocean. So this is used for the Americas and west-coast of Africa. An exception is Iceland, Faroer Islands, Ireland and United Kingdom from Europe;
 +
* Suez - this is used for any destination/origin that has to use the Suez canal;
 +
* Mediterranean - this is used for any inter Europe transport (Mediterranean, Baltic, North Sea);
 +
 
 +
It might be that for some destinations the Atlantic and Suez boats are too large. We need more information on some destinations.
    
=== Transport routes ===
 
=== Transport routes ===
Line 109: Line 122:     
As the score is normalised by the maximum impact, any country correction is not seen in the score.
 
As the score is normalised by the maximum impact, any country correction is not seen in the score.
 +
 +
=== Bonus ===
 +
The final bonus should be calculated on the origin of the product and the origin of the ingredients. From the point of the eco-score, the word local used for the country of purchase. So local might imply a large area (France) or a small area (Luxemburg). We might have various cases depending on product and ingredients:
 +
* ''local'' - in this case the product is produced in country of purchase. Also all the ingredients are sourced locally. This implies a score of 100 and a bonus of 15 (?).
 +
* ''partially local'' - the production is in the country of purchase, but one or more ingredients are imported (non-local). The score is now the sum of the weighted score fractions of each ingredient.
 +
* ''imported'' - the producion is in another country. The score is now equal to the score of the country. It is assumed that all ingredients come from the same country.
 +
* ''multi-sourced'' - the production is non-local, i.e. in another country. And the ingredients came from multiple countries. (How to calculate this? Can we view the other countries a percentages?)
 +
 +
The formula presented in the eco-score [https://docs.score-environnemental.com/methodologie/produit/transport document] needs to be adapted to take the ''multi-sourced'' case into account.
 +
 +
score<sub>final</sub>(purchase, production, origin) = score(purchase, production) <big>Σ</big><sub>ingredient=1</sub><sup>N</sup> score(ingredient,production) fraction(ingredient) / 100
 +
 +
* score<sub>final</sub> depends on the purchase location, the production location and the origin location of each ingredient;
 +
* score(purchase, production) depends on the production and purchase location. If both are the same this is 100, otherwise it should be lower than 100;
 +
* ingredient is an ingredient in the product. So the sum iterates over all ingredients comprised in a product;
 +
* score(ingredient, production) is the score for getting the ingredient to the production location. If both are the same country this will be 100;
 +
* fraction(ingredient) is the fraction of the ingredient in the product. The sum of all fractions should be 1;
    
== Calculation method ==
 
== Calculation method ==
Line 118: Line 148:  
The centroid sheet lists the centroid for each country in the world. With OSM the closest town has been identified. In order to be able to calculate distances by road through OpenStreetMap, we need identify the closest town to this centroid. (Be careful with the place name recognition in OSM, sometimes the wrong location is given.)
 
The centroid sheet lists the centroid for each country in the world. With OSM the closest town has been identified. In order to be able to calculate distances by road through OpenStreetMap, we need identify the closest town to this centroid. (Be careful with the place name recognition in OSM, sometimes the wrong location is given.)
   −
The centroids were taken from [http://worldmap.harvard.edu/data/geonode:country_centroids_az8 here]. The countries in this list have been used as a starting point. Some centroids have been recalculated based on largest cities and population sizes.
+
The centroid cities were calculated based on population and road distances (see [[Centroid|here]]) or were taken from [http://worldmap.harvard.edu/data/geonode:country_centroids_az8 here]. The countries in this list have been used as a starting point. Some centroids have been recalculated based on largest cities and population sizes.
    
The worksheet contains the following rows and columns.
 
The worksheet contains the following rows and columns.
Line 139: Line 169:  
For each of the area's on the ''Centroid-worksheet'' a row and a column is created in the ''Container port worksheet''. In addition two columns that document a port have been added: one column is a link the wikipedia-page of the port and one column is a link to the port authority of the port.
 
For each of the area's on the ''Centroid-worksheet'' a row and a column is created in the ''Container port worksheet''. In addition two columns that document a port have been added: one column is a link the wikipedia-page of the port and one column is a link to the port authority of the port.
   −
Each cell that links to ports shows the maritime distance between the two ports, as calculated by [https://www.searates.com/services/distances-time/ Searates].
+
Each cell that links to ports shows the maritime distance between the two ports, as calculated by [https://www.searates.com/services/distances-time/ Searates] (black).
 +
 
 +
Ports that are not listed in Searates (or could not be found) have been taken from Shiptraffic. This requires conversion from nautical miles to kilometres (light green 1)
 +
 
 +
Some (landlocked) countries share ports. In that case the distances are linked, either between rows of the same port (light red 1) or between columns (orange).
 +
 
 +
There are many maritime routes that use the same sea passages, such as the Gibraltar straits. Instead of looking up all the routes in [https://www.searates.com/services/distances-time/ Searates], it is easier to look up the distances to a port on the strait and just copy the corresponding data. Only for the water basin behind the strait we need to do the lookup. The distances obtained via these strait ports have been coloured.
 +
 
 +
This can be done for:
 +
* Baltic sea <-> North Sea : Copenhagen port (cornflower blue)
 +
* Black sea <-> Mediterranean : Istanbul port (cyan)
 +
* Adriatic sea <-> Mediterranean / Durres port (cornflower blue)
 +
* Mediterranean <-> Atlantic Ocean / Algeciras (Gibraltar) (cyan)
 +
* Mediterranean <-> Red Sea / Damietta (purple)
 +
* Great Ocean <-> Atlantic Ocean / Panama (green)
 +
 
 +
For some ports there are some exceptions to the rules described above:
 +
* Faroer (Tórshavn) - is only supplied through Reykjavik and Helsingor (Denmark). The distances are calculated by the distance to Copenhagen plus 1870 km.
 +
* Svalbard (Longyearbyen) - is only supplied through Tromsø (Norway. The distances are calculated by the distance to Oslo + 1695 nautical miles.
    
==== Maritime Route matrix worksheet ====
 
==== Maritime Route matrix worksheet ====
Line 145: Line 193:  
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
! Transportation mode !! Impact
+
! Transportation mode !! Impact !! Explanation
 
|-
 
|-
| Road || Example
+
| Road || 79g || for transport by truck
 
|-
 
|-
| Coasters ||
+
| Coasters || 13g || for sea transport on medium distances
 
|-
 
|-
| Across the atlantic || Example
+
| Atlantic || 11g || for transport across the Atlantic
 
|-
 
|-
| Via suez canal || Example
+
| Via suez canal || 7g || for very large container transport
    
|}
 
|}
 +
 
==== Road Route matrix worksheet ====
 
==== Road Route matrix worksheet ====
 
This worksheet contains the impact of transportation between the countries by road. Each cell contains the impact between two countries. The distances are based on the centroids of the countries, and the distances of the directions calculated by OpenStreetMap. Routes that contain a trip by sea are taken from Google Maps.
 
This worksheet contains the impact of transportation between the countries by road. Each cell contains the impact between two countries. The distances are based on the centroids of the countries, and the distances of the directions calculated by OpenStreetMap. Routes that contain a trip by sea are taken from Google Maps.
Line 168: Line 217:  
The impact is normalised in order to calculate the score.
 
The impact is normalised in order to calculate the score.
   −
==== Intra country logistics ====
+
==== Export matrix worksheet ====
Does the eco-score or ACV take into account the impact of logistics required within a country? This probably needs to be changed for countries with different sizes. Not sure what is the best way to calculate the mean distance for each country.  
+
This worksheet shows the scores as used by OFF and are setup such that they can easily be imported. Instead of the country names the [https://en.wikipedia.org/wiki/ISO_3166-2 ISO 3166-2] codes are used. Rows and columns are alphabetically sorted on these codes. Each cell contains a formula to extract the data from the '''Score matrix worksheet'''.
 +
 
 +
Adding a new country can be done by:
 +
* inserting a column in the right (alphabetical) location;
 +
* linking the header of the new column to the corresponding row header;
 +
* copying a formula from an existing cell to all the rows of the new column;
 +
 
 +
==== Update Procedure ====
 +
The spreadsheet has been designed with updating in mind. Several type of updates might occur. It is described what should be done in each case.
 +
# Data
 +
# New origin territory
 +
Origin territories are encoded as rows. A new territory needs to be inserted in EVERY worksheet. Start with the centroid worksheet. Find the right row where the new territory should be put underneath. The right row is the country where the territory belongs to. After this is done for all worksheets, the data can be filled in. This has been described above.
 +
 
 +
Note that if an origin territory has multiple sea ports, then a separate row for each port has to be created.
 +
 
 +
# New purchase territory
 +
Purchase territories are encoded as columns.
   −
A worksheet is reserved for the recording of the mean size and the environmental impact.
   
== Check ==
 
== Check ==
 
the calculations and spreadsheet described above should be checked against the values publish by Eco-score. This can be achieved by recalculating the values for France.
 
the calculations and spreadsheet described above should be checked against the values publish by Eco-score. This can be achieved by recalculating the values for France.
   −
The first take at the calculations can be seen in the graph below:
+
The second take at the calculations can be seen in the graph below:
[[File:EcoscoreFrancecheck.png|thumb|center|Eco-score France check]]
+
[[File:EcoscoreCalculation.png|thumb|center|eco-score France check]]
   −
From the graph it can be seen there is still work to be done:
+
The graph shows that the calculation roughly follows what has been presented by Eco-score. There are some small differences:
* The eco-score values are in general lower than my calculation. This can be due to a different normalisation: what should be used as maximum, that corresponds to eco-score value 0. I used the impact to islands in the Pacific;
+
* The eco-score seems a bit more positive, which can be due to addition of rail in the modal mix;
* Is there a cutoff distance, where we rather transport by boat than road;
+
* For may countries a population based centroid was used, which sometimes increases the distance (countries in the South) and sometimes decreases the distance (countries in the north);
* I did not use any modal mix and assumed the worst option by road;
+
* No road cutoff distance was used. Above this cutoff distance transport by sea is preferred. This introduces worse values at the lower end. By adding a cutoff distance of 2000km, these values fall in line.
* There might be centroid issues, for instance why has Monaco (south of France) a worse eco-score than Denmark? Would also imply that internal transport should be taken into account.
  −
* There are many large individual differences reflecting other choices that have been made in centroids, distances, impact, etc. We really need to be more transparency and thus might get more consistency.
      
== Thoughts ==
 
== Thoughts ==
Line 190: Line 252:  
=== Base calculation method ===
 
=== Base calculation method ===
 
The calculation method used for the Agribalyse normalisation and bonus/malus system makes it difficult to understand. Ideally the Agribalyse CO values and the transport malus are comparable. This is not the case at the moment. So what does a transport malus actually mean? I would prefer a method where the normalisation is done after applying all the bonus/malus. So that in effect the Agribalyse values are directly adapted by the bonus/malus application.
 
The calculation method used for the Agribalyse normalisation and bonus/malus system makes it difficult to understand. Ideally the Agribalyse CO values and the transport malus are comparable. This is not the case at the moment. So what does a transport malus actually mean? I would prefer a method where the normalisation is done after applying all the bonus/malus. So that in effect the Agribalyse values are directly adapted by the bonus/malus application.
 +
 +
It is possible to use a percentage bonus/malus system, where the percentages are applied directly to the ACV-numbers. I tried to map the eco-score approach against the percentages approach. Checkout the [https://docs.google.com/spreadsheets/d/18Rln2Ku48d2qJ9TQf-FZ6_0OR-9eg1DO4Sh4cmzRgI0/edit?usp=sharing spreadsheet] (still needs more work, eco-score allows to downgrade a product with no ACV). Thus you can map a malus against a percentage, in order to get things going.
 +
 +
If more information is available, it is possible to apply a more detailed change to the ACV, instead of a percentage. For instance for the impact of transport. For this it is possible to calculate the impact in gram CO<sub>2</sub>. And this can directly be linked to the listed CO<sub>2</sub> impact of the ACV. Unfortunately the CO<sub>2</sub> can not be derived from the PEF, so really the original data should be adapted (I have seen fractions of 10-40%).
    
=== Transparancy ===
 
=== Transparancy ===
Line 230: Line 296:     
Thus a bonus of 0, should imply no distance larger than the mean distance, a larger distance would imply a malus and less distance a bonus.
 
Thus a bonus of 0, should imply no distance larger than the mean distance, a larger distance would imply a malus and less distance a bonus.
 +
 +
=== Olives niçoises ===
 +
The ''olives niçoises'' is a small black olive variety that comes from the region around Nice (or so they say). They are my preferred ones. What is the transport bonus for these olives. Well if you liven in France there a bonus score of 100, wherever you live in France, even if you live 1200 km away. However if you live 10km away in Monaco, the score is 62. The reason for this difference is the fact that the size of the respective countries are not taken into account. A [[Country correction]] is needed.
 +
 +
=== Impossible maritime routes ===
 +
The maritime distances have been calculated with Searates. This site also shows any available shipping companies or the corresponding route. For many of the distances there is no available shipper. Probably one has to ship via another port to each the required destination. This will make the shipping distances longer. And it requires more work to find the shortest (cheapest) shipping route.
 +
 +
=== Best or worst estimate ===
 +
There are two choices in calculating the transportation impact: the best estimate and the worst estimate. The best estimate uses the distances between country centroids, so that the calculation is valid for the majority of users. The worst estimate uses the longest distance between the outskirts of a country. In fact this worst calculation is now used for the calculation of the EU.
 +
 +
The rationale behind the worst estimate, is that we would like the producers to give more information on their supply chain (where is the factory? where are the ingredients come from?, etc), so that there is more transparency.
 +
 +
=== Individualised ecoscores ===
 +
The Ecoscore is in some extent an individualised score: it depends on the location of the consumer. In the official explanation this fact is hidden, but it is based on the assumption that the consumers lives/consumes in France.
 +
 +
== Adjustments ==
 +
OFF could add some minor adjustments to the transport score calculation, in order to better reflect the locally produced theme. These adjustments follow the eco-score calculation approach, but add some details.
 +
 +
=== Production countries ===
 +
The eco-score does not seem to take into account that the production of a product might take place in another country. Instead of looking at the origin of the ingredients, we can now assume that all the ingredients come from the production country.
 +
 +
=== Country correction ===
 +
Each country should have a standard transport score, which depends on the country size. The smallest country size should have a transport score of 100. Scaling should be based on country size and normalisation size (2000km). The centroid calculations give a good indication for country sizes.
 +
 +
=== Smaller Normalisation ===
 +
The normalisation is currently based on 2000km. This is very large. The consequence is that even large distances get a favourable bonus. And it is not possible to distinguish between small and slightly larger countries. A normalisation of 1000km would given better results. It would also allow to distinguish the bonus between French regions (+14) and departments (+15).
 +
 +
=== Transport malus ===
 +
The current transport corrections only allow to add a bonus. However this bonus is calculated using transport distance (currently 2000km by road). This implies that some destinations might result in negative scores. These are no cutoff to a bonus of zero. The negative scores could be retained and applied.
 +
 +
For example [https://fr.openfoodfacts.org/produit/9417574000083/fiji-water this water] imported from Fiji will have a '''malus''' of 67.
 +
 +
=== Support territories ===
 +
The eco-score calculation is based on countries. As some countries are very big, any transport in such a country might be seen as greenwashing. Also it makes comparison between countries impossible.
 +
 +
Instead of using countries as smallest entity, one could use territories of a country as smallest entity. For France this would mean the Régions, for Germany the Länder, etc. If the purchase and production location fall within a single territory, the bonus score would be 100. Any transport between territories would imply a lower bonus score. This might be offered as an option to a user, who wants to be more transportation conscious.
 +
 +
If both the purchase and production location are not known, we could fall back to the country based eco-score. If either the purchase or the production location is unknown, we can make the assumption that the it is in the most populous territory and calculate the eco-score based on this.
 +
 +
This idea can be explored a bit further. The first step is that we need to know the territory of the user. Then we have the following three situations:
 +
# Producer in the same territory - this will result in a score of 100 and thus a maximum bonus;
 +
# Producer in another territory - the distance between the territory centroids determines the distance used in the score calculation;
 +
# Producer in another country - the centroid distance between the consumer territory and the centroid of the country is added to the standard calculation;
 +
 +
A sample calculation with the Olives Niçoises (producer in department Alpes-Maritimes, région PACA):
 +
* Standard:
 +
** consumer in France: score = 100 (0 km);
 +
** consumer in Germany: score = 62 (769 km);
 +
* Territory:
 +
** consumer in région PACA: score = 100 (0 km);
 +
** consumer in région Hauts de France: score = 52 (966 km);
 +
** consumer in department Somme: score = 45 (1110 km), using Alpes-Maritimes;
 +
** consumer in Germany: score = 25 (722+769 km)
 +
** consumer in Bavaria: score = 7 (722+769+366 km)
 +
 +
The effect of the location of the consumer can be well seen.
 +
 +
=== Distances ===
 +
It also possible to look at the various [[transportation distances]] outside the context of the ecoscore.
3,390

edits

Navigation menu