In a joint statement, European leaders said Greece will use revenue from the country's Helios solar power project to help cut the country's debt by $21 billion.Helios is a €20 billion project that may install as much as 10 gigawatts of solar power in the country by 2050. The country's Environment, Energy and Climate Change Minister George Papaconstantinou said the project has the potential for revenue of €80 billion.“Greece commits future cash flows from project Helio