Energy firm with 20,000 customers on the brink of going bust

Ripple Energy, for a minimum of £25, lets customers co-own wind and solar parks (Picture: Getty Images)A green energy firm that helps keeps the lights on for more than 20,000 Britons is on the verge of going bust.Ripple Energy, a renewable energy generation firm, asks customers to chip in money to co-own wind turbines or solar farms in the UK.Rather than being an energy supplier, Ripple lets people buy shares in renewable energy sites. They receive discounted energy from major suppliers,