Solar Panels is a Renovation that prevents the first play that would trigger Sun 2, keeps those runs, and converts them to runs for the team's next game. The number of runs saved is equal to the number of runs scored in that play, so if a player scores 4 runs, those would turn into 4 runs in the team's next game. This effect only triggers once, and the next time the score would cross 10, the Sun 2 activates normally. The runs apply to the team's next game regardless if they play in the same ballpark for their next game.
Solar Panels were unlocked: