Free mock exam
Energy Storage — Renewable Energy & Solar PV Practice
Free topic-focused mock exam: 30 random questions from a pool of 42 on Energy Storage, drawn from the wider Renewable Energy & Solar PV bank. 35-minute timer, 70% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.
- Questions
- 30
- Time limit
- 35 min
- Pass mark
- 70% · 21/30
- Question bank
- 42
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01What is the most common battery technology for residential solar storage?
- ALead-acid
- BLithium-ion
- CNickel-metal hydride
- DFlow batteries
Why: Lithium-ion batteries are the most common choice for residential solar storage due to efficiency and lifespan.
02What is the typical depth of discharge for lithium-ion batteries?
- A90%
- B50%
- C100%
- D70%
Why: Lithium-ion batteries can typically discharge to 90% depth without significant degradation.
03What does round-trip efficiency measure in a battery storage system?
- AThe total installed cost per kWh of the usable capacity fitted
- BThe maximum power that the battery is able to deliver
- CThe number of full charge cycles before the end of service life
- DThe proportion of energy lost over a charge/discharge cycle
Why: Round-trip efficiency measures the energy lost during the complete charge and discharge cycle.
Common questions
Is the Energy Storage mock exam free?
Yes — 100% free, no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.
Can I retake the mock exam?
Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.
Does this count towards the real qualification?
No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.
