The microgrid is built around 120 kWh of Redflow batteries and is supplied with building-integrated, thin-film photovoltaic solar panels, as well as a solar wall that supplies the warm air to a heat-pump for space and water heating.
According to Redflow, since being built the classroom has proven the Active Buildings concept by generating more energy than it has used over an annual cycle, and during high solar summer months, the system will return power to the local electricity grid.
Tom Griffiths, Technology Transfer Fellow (Smart Systems) at Swansea University said Swansea selected the Redflow technology because of its ability to deliver 100% of the rated system energy every day, without degradation in capacity over a long – 10 year – life.
“These characteristics were crucial considerations for us, and our application requires battery discharge duration of 4-8 hours depending on the time of year, making Redflow’s flow battery the ideal fit for our requirements in comparison to more conventional lead-acid or lithium alternatives.”
“Redflow is delighted that Swansea University selected our technology. This project with its dual renewable generation sources will be a bench-mark for flow-battery minigrids,” said Redflow CEO & Managing Director Tim Harris.
“ This is an emerging segment that Redflow is focussed upon, having recently deployed some PV-only minigrids in the agricultural sector in Australia.”