In the TCG, Power is a measure of a Dinosaur's attacking capability and the primary numerical statistic, merging the arcade Attack's function with the arcade Strength's front-and-center position. A dinosaur's Power is combined with that of its Move Card and compared to the opposing dinosaur and Move's to determine who is the winner of the battle, and a tie counts as both losing. Power is always a multiple of 100.
A dinosaur's Power is based on their Level, with a standard Power for each Level if no abilities, and then lowered (or raised) according to how helpful or easy to use a dinosaur's ability is to balance out the advantage (or disadvantage) the ability gives; more details here. Power generally ranges from 1000 to up to 2500; small form Special Dinosaurs (main dinosaurs) have 700-800 Power, and the Easter Set special egg cards have only 200 Power.
A Move Card's Power is also scaled by having useful effects (below average) or usage conditions (above average). A Normal Move with no effects (Tail Slam, Dino Stomp) gives +600; an Alpha Move with no effects (Alpha Blast) gives +700; Black and Super Moves with no effects (Black Rampage, Electric Charge, etc.) give +800; and Signed Super Moves with no effects (Fire Cannon, etc.) give +1000. Many Move Cards can give 2 different Power boosts, the higher boost dependent on certain conditions. At the lower end, 4 Moves give +0 Power for various reasons, while at the upper end, Black Howl can and the 6 Signed Fusion Moves always give +1500.