When trying to add a sensor that combines power of multiple entities it causes the card to become invisible and unusable. I have three light bulbs in a bathroom and if I add each bulb individually it works but if I create a helper sensor to add the three lights together and sum the power usage it breaks this card.
When trying to add a sensor that combines power of multiple entities it causes the card to become invisible and unusable. I have three light bulbs in a bathroom and if I add each bulb individually it works but if I create a helper sensor to add the three lights together and sum the power usage it breaks this card.