Start the Powercalc config flow, choose Virtual power (library), and pick Tuya → SUNCO-5W_I2C_RGBCW.
Add this to your configuration.yaml, replacing light.my_light with your own entity.
powercalc:
sensors:
- entity_id: light.my_light
manufacturer: tuya
model: SUNCO-5W_I2C_RGBCW