How It Works

How WatterSaver Works

The cost of energy changes throughout the day and peaks when demand for energy is at its highest. WatterSaver sends signals to your electric resistance or heat pump water heater to heat water at off-peak times, when electricity rates are lower. By heating water before peak hours begin, WatterSaver ensures that hot water is available whenever you need it. You’ll be less likely to need to use electricity to heat your water during costlier, peak times. Gas water heaters are not eligible for WatterSaver.

Load Shifting & Time-of-Use (TOU)

When you shift some of your electricity use to times when demand is lower and renewable energy is more plentiful, such as during the daytime, you help reduce pressure on the power grid. That’s called load shifting, which is a form of demand response.

WatterSaver is a daily load shifting program that helps balance demand on our power grid, which can help avoid power outages and take advantage of abundant clean, renewable energy that’s available every day. WatterSaver requires that you are on a Time-of-Use (TOU) rate plan so you also get the advantage of lower off-peak electricity prices. 

WatterSaver sends signals to heat your water during off-peak times, taking advantage when energy is more plentiful and rates are lower, and heating your water heater so you’ll have hot water whenever you need it. WatterSaver may also send signals during peak times to help avoid your water heater turning on during costlier, peak hours. By shifting the energy you use to heat your water to off-peak times, you avoid paying the highest prices for electricity. It takes less energy to keep water hot, so you reduce the amount of electricity you use during peak hours. But don’t worry, if you need more hot water during peak hours, WatterSaver will still heat your water at these times.

By making this slight shift in your electricity use, you can save money on your energy bills, help reduce demand on California’s power grid and the risk of power outages, and help our state take advantage of cleaner, less expensive renewable energy sources.

With WatterSaver, you’ll also earn rewards, including a one-time $50 enrollment bonus and an additional $5 monthly reward.