Quasar Energy is described as 'AI-powered engineering reports and energy market analytics. Cable sizing, solar PV+battery design, and weekly/monthly energy market intelligence for EU professionals. No subscription — pay per report' and is an app. There are four alternatives to Quasar Energy for a variety of platforms, including Windows, iPhone, iPad, Linux and Android apps. The best Quasar Energy alternative is ETAP. It's not free, so if you're looking for a free alternative, you could try OnSun. Other great apps like Quasar Energy are Cable Pro Web and PVsyst.