First candle lighting

Hi,

One who lights Shabbat/Yom Tov candles for the first time should recite Shehechiyanu. Where the first time is Yom Tov, the person lighting should recite Shehechiyanu once and have in mind both the first time performing the mitzvah and lighting for Yom Tov.

(Rivivot Ephraim 1:182)

Have a great day,
Mordechai