Engineering & Materials Science
Energy security
100%
Fuel cells
70%
Electricity
43%
Hydrogen fuels
37%
Hydrogen
36%
Renewable energy resources
26%
Sustainable development
20%
Power generation
15%
Natural gas
12%
Gas supply
11%
Heating
10%
Snow
10%
Energy efficiency
10%
Disasters
9%
Synthetic fuels
9%
Costs
9%
Gases
7%
Hot Temperature
7%
Gas fuels
7%
Electric lines
7%
Electrolytes
7%
Coal
7%
Methane
6%
Social Sciences
energy supply
36%
energy
36%
electricity
34%
renewable energy
28%
Power generation
22%
interference
17%
efficiency
16%
supply structure
15%
electricity supply
13%
sabotage
11%
natural disaster
10%
coal
9%
customer
9%
costs
9%
demand
8%
decentralization
8%
Transport sector
7%
heat
6%
primary energy
5%
reform
5%
Chemistry
Electricity
55%
Fuel
46%
Energy
37%
Hydrogen
30%
Heat
8%
Natural Gas
6%
Gas
6%