Octopus Energy is offering the reward through a special scheme tied to the upcoming celestial event on Wednesday, August 12. This day will mark the UK's fullest solar eclipse for the next 54 years, with over 90% of the sun set to be obscured by the moon. Octopus is also hosting an eclipse solar competition for the chance to get free solar panels installed in your home – or £12,000 in cash. How to watch the solar eclipse safelyAnyone planning to watch an eclipse must never look directly at the Sun without certified eclipse glasses or suitable solar filters, even when most of the Sun is covered. Will you be aiming to reduce your energy usage during the solar eclipse?