Sorry to disappoint you:o, but "solar" in Spanish is "solar" (ex. the solar system = el sistema solar) .... oh noes! lol ...
"Solares" is the plural of "solar" (ex. solar panels = paneles solares).
So basically you coupled a singular name (TV, even if it's a ccTLD, it's written like a singular) with a plural adjective ... a mess ...lol ... and "solares" stand-alone is not particularly significant, it's a bit "out of place", it looks like it needs an add-on to be "complete".
Solar.tv and tvsolar.com (using .com ext) would have been correct, but they are taken already. But TVsolar.tv is still available, if you like .TV extensions (personally I don't like them so much).
Regards.
:wave: