| Form of Membership | Membership Criteria | Euros/Year |
| Associations | 2% of membership fee | 1 000 - 10 000 |
| Companies* | > 500 million Euros | 30 000 |
|
200 – 500 million Euros |
20 000 | |
|
100 – 200 million Euros |
10 000 | |
| 50 - 100 million Euros | 7 500 | |
| 25 - 50 million Euros | 5 000 | |
| 5 - 25 million Euros | 2 500 | |
| < 5 million Euros | 1 000 | |
| Energy agencies, think tanks, universities etc. | 2 000 | |
* Based on turnover of the previous year. 50% fee reduction for organizations in LDC countries.
Individuals interested in supporting the work of WBA can join as individual supporters (Fee: 100 Euros)
Organizations can also join as supporter members (Gold/Silver). Please contact secretariat for further info