Most appliances should have an information panel showing their consumption in watts (W) or kilowatts (kW) – 1kW is 1,000W. If your solar panels are generating over 1,200W at a particular time, you would be able to power a 300W fridge-freezer, an 800W microwave and a number of small appliances like your broadband router and LED bulbs.
Dishwashers typically use 1.2-2.4 kWh of energy. Any good quality solar panel generates enough power to support these appliances effortlessly. However, the size of the dishwasher can be a factor determining its power requirement. If you have a large one, more solar power would be required.
Typically speaking, the more energy you use, the more solar power you need. The opposite is true for peak sun hours. If you are in an area with a high number of average hours of sunlight, each solar panel will receive more light, and thus produce more power, so you may need fewer panels to power your home.
If you are in an area with a high number of average hours of sunlight, each solar panel will receive more light, and thus produce more power, so you may need fewer panels to power your home. To estimate the number of solar panels you need, look at three variables: Solar panel rating, production ratio, and annual electricity usage.
Voltage power of your solar system. The general rule is your solar array must be larger than the battery capacity. A 48V solar system should have a 36V battery bank, a 36V solar system should have a 12V battery bank etc. This allows the battery to cope with voltage drops and spikes, energy loss and fluctuations in power.
However, instead of using electricity to run the oven, if you use solar power, the energy consumption will go down. Generally, ovens consume between 1KWh and 4KWh of energy based on duration and temperature setting. Switching to solar power for appliances such as ovens that require higher energy makes your home energy-efficient.