IB ESS SL 7.2.5 Intermittent energy production Question Bank
Practise IB ESS SL/HL 7.2.5 by applying intermittent energy production concepts to exam-style environmental systems questions.
- Syllabus
- First assessment 2026
- Course
- ESS SL
- Level
- SL
Practise IB ESS SL/HL 7.2.5 by applying intermittent energy production concepts to exam-style environmental systems questions.

Figure:Electricity generation in Costa Rica by energy source (1990-2016)
Identify one possible reason why there has been a change in the quantity of electricity generated from wind as shown in Figure: Electricity generation in Costa Rica by energy source (1990-2016).
improved/cheaper technology;
change in environmental values / increase in popularity; greater awareness of benefits of using wind power; government policy / to achieve country's goal to become carbon neutral; increasing demand due to growing population
Note: Do not accept 'wind power is renewable/unlimited/more sustainable/a green energy source/more viable over the long term/produces less pollution'. Do not accept 'changes in wind current'.
Marking guidance:
Do not accept only 'greater investment/funds available for wind power/renewables'.