For me it is very important that I buy 100 % renewable energy for my car. Just like it is important that I buy 100 % renewable electricity for my household use. I see no difference here. I wonder, why there are so many people buying 100 % renewable electricity, but not buying 100 % renewable transport energy. As you see in the enclosed avatar picture of mine, my car, actually a van, has license plate CBG-100, i.e. Compressed Biogas-100, i.e. 100 % biogas. I want to drive on 100 % biogas or other 100 % renewable methane (I have filled my car also with 100 % synthetic biogas in Austria and 100 % wind/solar methane in Germany). And I want to avoid using natural gas, synthetic natural gas, shale gas and other fossil methane sources as well as gasoline. Price compared to fossil alternatives is not an issue just like price compared to fossil or nuclear alternatives is no issue for people buying renewable electricity. And none of those who buy renewable electricity buy blends with fossil or nuclear. It is clear that it is 100 % renewable. For me it is clear that transport energy must also be 100 % renewable and no blends are acceptable (for that reason E85 or electric cars with mixed electricity are no options).
I have driven from Eastern Finland via Lapland to Southern France by 100 % biogas, without any natural gas or gasoline, with the unfortunately exception of gasoline start (of which we should get rid of). There are already over 200 CBG100 stations in Western Europe allowing for driving across Europe by renewable energy. And it is the only fuel allowing it. For example, although ethanol and biodiesel are used in Europe a lot in blends, there are no E100 filling station in whole Europe and only very few B100 stations.
I really would think that 100 % biogas would be excellent PR argument for gas sellers, if they could advertise it like green electricity is advertised.
In Sweden the situation in this regard is bad, i.e. it is difficult to know, where 100 % biogas is sold, and usually information of biogas content, which I call environmental quality of the fuel, is not given. The Svanenmarken is useless and misleading, because it allows for 50 % natural gas use. As people are used to having a lot of environmental information in products they buy from supermarkets, I wonder why it is so difficult to give it them for their fuel, which is more important for environmental impacts than about any other product people buy. Why are there no mass movement in Sweden requiring this?
Most of the methane filling stations in Sweden sell blends of biogas and natural gas. Even if they do so, they could give the consumer a choice of buying 100 % biogas. This is easy to do and is done in many European countries, including Norway and Finland. For example, in Finland all stations, where biogas is available, sell 100 % biogas. Some of those stations also sell natural gas, but the consumer can choose at the pump, whether they want 100 % biogas or 100 % natural gas.Of 23 public methane stations 4 sell CBG100 only, 17 sell both CBG100 and CNG, and only 2 sell CNG only. Information about this is available in the Finnish biogas filling station map:
https://mapsengine.google.com/map/viewe ... gSa9MoWUuY
In Germany there are almost 200 CBG100 stations, and information of this is given in their fillig station map. However, in the Swedish filling station map, this information is not given.
There are many problems related to this issue in all countries. For that reason I published a discussion paper for improving the CBG100 network in Europe:
http://www.biokaasuyhdistys.net/media/C ... etwork.pdf
Most important things are:
1) Consumers should be given information of biogas content in the methane they buy for their cars.
2) Consumers should be given the option to buy 100 % biogas in stations, where biogas is available, i.e. all stations except those selling fossil gas only.
I have found curious resistance to this in Sweden. I really can not understand it in any other way than to protect the image of natural gas and even more the image of shale gas, which is expected in the Swedish market. But why do not consumers and politicians take the issue up and require change? In Sweden consumers take up many other environmental issues with much less environmental importance than transport fuels. As you see, this has already been solved in Finland. Why not in Sweden?