It’s rare to see a positive climate story hit the headlines, let alone one with an Irish angle, but last week Dubliner Paul Barrett PhD made Australian history by leading his company, Hysata, in the largest cleantech Series B in the country, raising AUD$172 million (€105 million).  The company, based south of Sydney in Wollongong, is developing high-efficiency electrolysers that aim to produce green hydrogen. Hysata’s unique selling point is rooted in its technology, which combines engineering and science in a unique capillary-fed alkaline electrolyser, using less energy to convert water to hydrogen.  This is the third funding round for…