By the time solar energy reaches Earth’s surface, it is spread very thin – even midday sunshine will not boil the billy or make toast. And solar collectors will only convert about 20 per cent of that weak energy into electricity. Thus thousands of solar panels are needed to collect significant energy, and lots more to charge the expensive batteries needed to maintain the electricity supply overnight and during cloudy weather.
Already a subscriber? Log in
Easter flash sale:
10 issues for $1
Subscribe this Easter and get the next 10 issues of the magazine, plus website and app access, all for just $1.
- Weekly delivery of the magazine
- Unlimited access to spectator.com.au and app
- Spectator Australia podcasts and newsletters
- Full access to spectator.co.uk
Or
Comments
Easter flash sale: 10 issues for $1
Join the conversation with other Spectator Australia readers. Subscribe to leave a comment.
CLAIM OFFER 10 issues for $1Already a subscriber? Log in