Classification
ETF - Fuel cells - general
12
ESB - Hydrogen energy
10
TKJ - Traffic
5
UHK - Traffic and environment - incl. automobile exhaust gas
5
EHA - Renewable energy sources
4
ETC - Energy conversion
3
TKH - Air flight, space flight
3
CNWK - Electric batteries
2
FJB - Electric materials
2
TEJ - Electric devices, mechanical devices, magnets, dielectrics
2
CNW - Electrochemical energy production and conversion
1
CXA - Coal and fossil fuel - chemistry and technology
1
CXX - Hydrogen production - chemistry and technology
1
EBA - Energy production, energy technology
1
ETA - Energy storage
1
EVB - Energy supply of Germany
1
EWA - Energy economy
1
EXA - Energy policy
1