Steve Chippy PaineMarch 23, 2015April 15, 2015Solar Equipment 1 Watt! Spring solar PC testing with the HP Stream 8. It’s the 23rd of March. We’re into Spring in Europe and the sun has just moved above my neighbor’s house. According to the local weatherstation there’s 365 W/m2 hitting ground level. I’m getting 1 Watt out of my 4W Changers Maroshi panel.