插电式太阳能实测

Plug-in solar panels are a cheaper, simpler alternative to professionally installed panels. But can they really reduce energy bills and are they safe, asks Matthew Sparkes THE global surge in solar power is nothing short of extraordinary. Over the past 15 years, the cost of installing a solar system has dropped by 90 per cent and the technology now accounts for over 80 per cent of the world’s new electricity capacity each year. So when oil and gas prices soared as a result of the ongoing conflict in the Middle East, solar was the obvious place to look for relief for many countries. …