This is an American product at the car park at Drain’s Bay. The UK distributor’s website describes it as “The BigBelly Solar compactor consists of a BP solar panel, with a twenty year warranty, which powers a 12v battery, which in turns provides the power for an internal compactor. There are two volume sensors within the bin and when the rubbish reaches a certain level, the sensors trigger the compactor. Each BigBelly takes up roughly the same "footprint" of an ordinary street bin but because of its compaction capability it can hold a minimum of 606, increasing to 800 litres of waste, up to eight times more capacity than the average street bin used by most local authorities. An additional Wireless Monitoring System option is also available which enables the BigBelly when it fills to 85% of it capacity, to send a text and/or email to the relevant division informing them that its ready for emptying.”
At the time of submission there was another on Geograph O1634 : Solar compactor on Trinity College campus.