☀ Self-Consumption Rate Calculator

Calculate how much solar energy you use directly vs export to the grid

Enter Your Solar Data

Your daily/monthly solar generation

Energy sent back to the grid

Your total electricity usage

Cost per kWh from the grid

Credit per kWh exported

Period for your data above

Frequently Asked Questions

What is solar self-consumption rate?

Solar self-consumption rate is the percentage of solar energy your system generates that is used directly by your household, rather than being exported to the grid. It is calculated by dividing the amount of solar energy consumed on-site by your total solar production. A higher self-consumption rate means you're maximizing the value of your solar panels.

How can I increase my solar self-consumption rate?

You can increase your solar self-consumption rate by shifting energy usage to daylight hours (running appliances during the day), installing a home battery storage system, using a smart energy management system, investing in a solar hot water diverter, or right-sizing your solar system to better match your consumption patterns. Battery storage is one of the most effective ways to increase self-consumption.

What is a good self-consumption rate for a home solar system?

A typical home solar system without battery storage has a self-consumption rate of 30% to 40%. With a battery storage system, self-consumption rates of 60% to 80% are achievable. The ideal rate depends on your system size, energy consumption patterns, and whether you use time-of-use tariffs. Higher self-consumption generally means better financial returns from your solar investment.