Does Solar Battery Storage worth investment?

solar power batteries

Solar power is a great way to create energy without the use of fossil fuels. But, solar panels don't run on sunlight alone.

The sun doesn't shine all day and night. So there's no chance that your equipment will be able to do it either. That means you need an alternate source that provides constant energy, like battery storage.

Technically, solar power systems work without battery storage, but it can be more difficult to manage your energy needs. Solar panels produce DC electricity and need an inverter that produces AC current for use in households.

This means solar is not always available when you want or need it most like at night when no other sources of renewable energy are around. Solar power batteries convert DC to AC and store it in a rechargeable battery.

Solar power paired with battery storage will save even more money than if you just had one or the other.

Stores Energy

Solar batteries are an intelligent investment for the future. When you buy them, they can store electricity from your solar panels when it's on a cheaper tariff or being produced and use that stored power later to reduce expensive grid rates during peak hours.

The solar batteries can be charged up during the day by a combination of solar PV panels and off-peak electricity.

The generation is stored as Direct Current (DC) before it reaches the inverter or after an Alternating current (AC) has been transformed.

If you have a system that pays incentives for generated power then choosing DC will result in marginal losses, but if your setup consists of 3 phase electric supply and 3 phase inverters then using a battery could be more beneficial.

Maximizes your yield from solar energy

With a standard solar power setup, you install panels on your home and plug them into the grid. If for whatever reason your panels don’t produce ample energy, then any shortfall is made up by drawing from the grid.

You are charged just as much for this electricity if it comes directly or indirectly (from when you sell back to the grid).

Either way, once installed with no battery system in place yet there could be days where you literally have zero useable power coming through because of limited sunlight hours- something that can get expensive quickly.

With batteries though, excess power created during sunnier periods will automatically store onto these units so even after dark it’s not like starting at zero again tomorrow; while cloudy days may see some reduction.

Avoids Demand Charges

The utility company provides a demand charge for their residential customers that changes depending on how much electricity is used during peak hours of the day.

You will be able to avoid this higher fee by resorting to solar batteries in order to store your excess power while you are not using it so you can use it when rates go up and there’s more demand for energy.

Avoids time-of-use (TOU) electricity rates

We all know that the cost of electricity varies depending on the time of use. If your utility has TOU rates, you will pay more for energy during peak hours when demand is high and solar power generation from home batteries really soars inefficiency.

Energy bills are lower during periods with less need for additional power – typically daytime or early evening where homes consume a lot less energy than they do later at night while most people sleep in their cozy beds after long days full of work and fun activities outside.

Enhances Energy Security

Solar battery systems provide a level of security and power for your home that you don’t get with normal energy sources.

If the grid is unstable, or if you want to be more certain about supplying electricity in an emergency situation, these solar batteries will keep key aspects of your house powered up even when there isn't any other source available.

How Much Energy Can You Store in a Solar Battery?

Solar battery systems for the home are available in a variety of capacities. Kilowatt-hours are used to measure capacity (kWh).

1 kWh equals 1000 Watts used for one hour. So, a small system could power 20 LED bulbs for approximately 9 hours, or an average modern fridge for 6 hours of continuous operation.

There are many different battery systems that have a fixed storage capacity starting at around 2kWh to 14kWh but there is also the option of adding more modules and increasing the energy stored.

How Much do Solar Batteries Cost?

The cost of a solar battery is determined by its battery life cycle, storage capacity, usable capacity, chemical materials, and manufacturing method. The cost of a home solar battery system starts at around $600 per kWh.

The Tesla Powerwall 2 is a 14kWh system that will cost you around $7500. Other brands can cost up to $1100 per kWh, but it is important to research each product to see how it works and if it will be optimized for you.

The cost of home battery systems is going to drop as more electric vehicles come into use and some car manufacturing companies recycle used batteries. These second-life batteries will make the way homes store power much cheaper.


Home battery systems are the natural next step for people who have solar panels. They offer a way of storing power and using it to provide electricity in your home even when there is no sunlight, which increases their return on investment from PV panels.

For off-grid homes, solar battery systems are the primary solution. They must be set up differently because there is no electricity grid backup appliances and demand management become increasingly important as a result.

Solar batteries are durable, but their expected life depends on how they're used.

If you store the battery for a long time without using it, then its storage capacity will drop by about five percent annually and within that 15-year span of useability; your solar battery will only last half as long or less than what is typically advertised from other sources.