The difference between a 1000-watt microwave and a 1500-watt microwave lies in their power output. Watts (W) measure the rate at which electrical energy is converted into other forms of energy, such as heat in the case of microwaves.
A 1000-watt microwave consumes 1000 watts of electrical power and produces 1000 watts of microwave power. This power level determines how quickly the microwave can heat or cook food. In general, a 1000-watt microwave is considered to be mid-range in terms of power.
On the other hand, a 1500-watt microwave consumes 1500 watts of electrical power and generates 1500 watts of microwave power. With a higher power output, a 1500-watt microwave can heat or cook food faster than a 1000-watt microwave. It is generally considered to be a higher-powered microwave.
It's worth noting that the wattage of a microwave is an important factor to consider when determining cooking times. Higher-wattage microwaves tend to cook food more quickly and evenly compared to lower-wattage models. However, cooking times can also depend on the specific features, technology, and design of the microwave oven.