Plug-in solar panels can be fitted to balconies, walls and gardens, but safe installation depends on the right location, permissions and connection method.

Government regulations remain a major obstacle for this emerging solar technology. Here's where plug-in solar is allowed - and where it isn't.

Karen is an energy efficiency and sustainability specialist with 20+ years experience. She exposes unsustainable businesses, products, and processes, and looks for ways we can all buy better - for ...