Why, despite its large roofs, does Australia have smaller rooftop PV systems than the UK? Related:Gryd, Zero In Developments launch homes with fully-funded solar and batteriesPut simply, Australia’s solar success is driven by large residential PV, whereas the British and Irish markets have smaller residential PV systems but proportionately more commercial PV. Home battery energy storage systemsIt’s a different story when it comes to battery sizes. The median figures also paint a different picture of the PV market, revealing typical UK PV capacities to be lower than in Ireland. The solar coaster isn’t a term that’s limited to solar uptake; it applies to the energy storage market, too.