Solar is the stage name of Kim Yong-sun (김용선) — from the English solar (relating to the sun). Kim Yong-sun (Solar, born 1991) is a Korean K-pop singer-songwriter — leader and main vocalist of the K-pop girl group MAMAMOO (마마무, RBW Entertainment, debuted June 2014). MAMAMOO's hits include Mr.
Solar does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Solar reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.