Energy Storage



Energy storage (also known as battery back-up, a home battery, or a solar battery) gives you the ability to store energy produced by your solar system to use at a later time of your choosing. Solar energy storage has been around for decades. However, more and more recently it has become more available as a cost-effective measure for homeowners to decide how they will use their own power.

Adding a battery backup system to your existing or newly-installed PV solar panel system helps protect your home against power outages by providing energy to your home produced by your solar system to keep your lights on and your refrigerator running when the grid goes down.

A home battery can also be set to discharge daily when the sun goes down as a way to continue operating your house with self-produced electricity during the time of day when utility rates are high. 

An additional benefit of a home battery system is that adding power storage to a solar system allows the solar panels to continue to produce energy for use and also to charge the battery during times when a grid outage would normally prevent energy use. 

A home battery system allows you to set-up and adjusts the delivery/discharge schedule to meet your changing needs, whether that’s to prepare for an outage, take advantage of the arbitrage ability that comes with using stored energy during peak rate times, or perform full discharges as required by some rebate programs that make buying a home battery much more affordable.

Certified Energy Storage Installers

SunPower by HES Solar is a SunPower SunVault Certified Installer, a Tesla Powerwall Certified Installer, and an Enphase Encharge Cerfified Installer. This means we offer several customized solar-plus-battery solutions that allow you to access solar power and lower your reliance on fossil fuels and dependence on grid-provided electricity availability.

What is the advantage of energy storage?


Any solar energy generated from your solar system and not being immediately consumed by your household is sent to your home battery or battery system to charge it. This happens when your solar panels are producing more energy than your house is using.

Without a battery, this energy would be sent back through the grid to the utility company and purchased by the utility. For the home with a battery, the excess energy charges the battery until it is full, and then additional energy is sent back through the grid to be purchased by the utility company. Most home batteries convert AC electricity into DC electricity for storage. When the stored energy is needed, the battery’s inverter converts it back into AC electricity to be used by your home. 

When your energy needs exceed the electricity produced by your solar panels your battery will discharge and power the home if programmed for that, or maintain its full charge and your home will be powered by the utility through the grid. 

Homeowners have options on when, and how much of, their battery power is used to best fit the needs and goals of the household. 

To simplify:

SunPower by HES Solar and SunPower strive to provide Southern California homeowners with peace of mind knowing their solar panel system has the top combined product, power, and installation warranty. The warranties cover a durable and reliable solar system designed to give you more electricity and more energy in less space while maintaining the aesthetic appeal of your home.



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Net Energy Metering 3.0 (NEM 3.0) is the incoming law created by the California Public Utilities Commission (CPUC). The new tariffs and fees will impact both residential and commercial solar systems built in California. 

As this notice is posted in November of 2022, the Proposed Decision from the CPUC outlining the proposed NEM 3.0 terms is expected soon. This comes after a year’s delay. Once the new agreement is finalized and passed into law, there will exist a designation of the deadline under which new systems will continue to qualify for NEM 2.0 rates. 

The new NEM 3.0 rates will be designed to lower the value of electricity during the daytime hours, when solar is producing, and increase the value of electricity during the evening hours, when solar homes and businesses purchase electricity. In short, NEM 3.0 will create a “sell low, buy high” proposition to new solar system owners. 

To Californians looking to install a solar system on their home or commercial building, the NEM 2.0 rates will be preferred. As of this post, the solar industry does not know the details of how different the NEM 3.0 rates will be from the NEM 2.0 rates. 

Please use the HES Solar website as a resource to learn more, and please take our offer to speak with an HES Solar Energy Consultant at no obligation.

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Robert Laverty

Senior Energy Consultant, Residential

Robert Laverty joined the HES team in the summer of 2018, bringing his ten years of solar design experience and his Bachelor’s degree from the University of Puget Sound with him. Robert is dedicated to finding solutions to help families produce and store electricity in order to reduce their reliance on grid power as well as help reduce their household’s carbon footprint. Robert’s experience as a newspaper editor as well as his involvement with the sustainability-focused Rocky Mountain Institute drives him to constantly seek out innovative ways to meet energy needs through renewable resources as well as helps him share those ideas with Southern California homeowners. When not at work or volunteering time with his church or community, Robert spends time with his wife and two sons or pursues his passion of fly fishing.
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