Why put solar panels on green space when we could put them over car parks?

. UK edition

An aerial/drone view of a solar farm in the UK at close to sunsetThe low sunset colours reflect off the solar panels
Could car parks meet the need for solar power generation? Photograph: Justin Paget/Getty Images

The long-running series in which readers answer other readers’ questions considers a hot topic within renewable energy

I would like to know why we build solar farms over green space, when we could just put them over massive car parks as a popular current internet meme suggests. Chris, Middlesbrough

Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday.