For more than a decade now, CleanTechnica has been the go-to leader of all things clean tech. The site is highly respected and has more readers than any other clean tech news site out there. The site is actively moderated and spammers and trolls are blocked/banned only after repeated warnings to improve their conduct. Those that are bitter and grumpy about the fact that they've been banned aside, millions upon millions of satisfied readers are stoked on the site and the global progress it promotes. The site does allow advertorials, as do most websites these days, but unlike many of those other sites, all advertorials are 100% very clearly labeled as such and all links in those articles follow Google's very clear guidelines on sponsored content. The advertorial content makes up less than 1% of the site's total content. Here's an example: https://cleantechnica.com/2017/02/02/led-lighting-retrofits-hawaiian-homes-faster-paybacks-solar-power/
CleanTechnica is known for clear-minded analysis. You'll find positive reviews of clean tech, and you'll also find reviews that cast doubt on clean technologies that are unproven. The editors of CleanTechnica are industry veterans that only want to see the right technologies used to solve the appropriate global challenges... it's technology agnostic. So you know you're getting the straight truth.