Battery Storage without Solar Panels

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Last Updated on 14th March 2024

Can You Have Home Battery Storage Without Solar Panels?

Can You Have Home Battery Storage Without Solar Panels?

Wondering if you can install home battery storage without the added cost of solar panels, especially in the context of the UK's unique energy landscape? The straightforward answer is definitely yes.

Thanks to technological breakthroughs, homeowners now have the flexibility to store electricity harvested from the national grid or other renewable sources. This innovation is not just a theoretical possibility but a practical solution for ensuring access to power during peak demand periods or in the event of an unexpected power outage.

By strategically shifting energy consumption to times when electricity rates are lower, households can leverage these systems to reduce their expenses significantly. Beyond the immediate financial benefits, investing in a standalone battery system also paves the way for greater energy independence and stability.

In a country like the UK, where energy prices can fluctuate widely, having a home battery system offers a valuable safeguard, helping your home's resilience against unpredictable changes in the energy market.

Key Takeaways

  • UK home battery storage works without solar panels, storing power for peak use or outages.
  • High upfront costs are balanced by future energy bill savings and increased independence.
  • Using energy during off-peak times cuts costs significantly.
  • Various efficient lithium-ion battery options are available for both homes and businesses.
  • Savings come from lower peak rates and possible government incentives.
  • Battery systems provide reliable power during outages and reduce energy expenses.

Best Battery Storage Only Setup

Best Battery Storage Only Setup

As we explore the battery storage options without solar in the UK, you'll find the variety is wide-ranging. Here's an overview of our top picks for best battery storage only setups:

1. Tesla Powerwall 2

Looking to splurge on something special? TheTesla Powerwall 2 might be exactly what you need. This high-capacity battery can handle up to 4,000 cycles, allowing for plenty of binge-watching sessions without any interruptions.

2. Puredrive II

If you're interested in supporting local innovation, the Puredrive II is a standout British option that's designed to meet your specific energy needs, boasting an incredible cycle life of up to 10,000 cycles. That’s a lot of holiday lights and celebrations over the years!

3. Pylontech 4.8

For those considering an option from abroad, the Pylontech 4.8 is a robust choice that offers a good balance between power and price, capable of up to 8,000 cycles. That's quite a bit of energy for powering your daily needs.

4. LG Chem RESU

In search of something more flexible? The LG Chem RESU comes in a variety of sizes to suit both your energy requirements and your budget, proving to be as reliable as your morning alarm.

5. Sonnen Eco

For a touch of sophistication, the Sonnen Eco brings European excellence with its consistent performance across 10,000 cycles - imagine relying on it as much as you do on your coffee maker.

6. BYD B-Box

Lastly, the BYD B-Box is ideal for those looking to save. It’s an economical choice that doesn’t skimp on quality, offering expandability for those who like to plan for the future.

Keep in mind, although there's a hefty investment, the potential long-term savings are significant. Check out the details below to compare and take your pick:

BrandCapacity (kWh)Average CostLifespan (Years)Cycle LifeAverage RatingWarrantyTechnologyHQ Location
Tesla Powerwall 213.5£9,000 - £13,00010 - 15Up to 4,0004.5/510 years (unlimited cycles)Lithium-ionPalo Alto, California, USA
Puredrive II5-25£1,60010 - 15Up to 10,0004.3/510 yearsLithium-ionChelternham, UK
Pylontech 4.84.8-72.6From £1,05910 - 15Up to 8,0004.3/510 years (or 6000 cycles at 80% DoD)Lithium iron phosphateSuzhou, Jiangsu, China
LG Chem RESU9.8-16£9,000 - £16,00010-15Up to 6,0004.4/510 yearsLithium-ionSeoul, South Korea
Sonnen Eco2.5 - 20From £6,10010 - 1510,000 cycles4.5/510,000 cycles or 10 yearsLithium iron phosphateWildpoldsried, Germany
BYD B-Box8.1 - 21.7£964.9110 - 15Up to 8,0004.2/510 yearsLithium iron phosphateShenzhen, Guangdong, China

So there you have it! With a varied range of options, these battery storage systems will ensure your home runs smoothly for years to come.

What is a Battery Energy Storage System?

What is a Battery Energy Storage System?

Battery storage systems, also known as battery energy storage systems (BESS), offer the capability to conserve electricity for later use.

This energy can be sourced from the National Grid or generated from renewable sources like wind or solar power. The main advantage of storing energy is its availability for use during periods of high demand or when the primary power supply is interrupted. We all know how much of a pain that can be!

The UK market provides a diverse array of BESS options, catering to both commercial and residential needs. Commercial setups might go for large, containerised units, while residential homes may find stand-alone 5kW batteries more apt. Lithium-ion technology currently dominates the battery storage market, enabling both homes and businesses to utilise renewable energy even during off-peak sun or wind conditions.

The Economics of Battery Storage Without Solar

The Economics of Battery Storage Without Solar

Investing in a home battery storage system without the sun's contribution is a bit like buying an umbrella in the Sahara – it might raise some eyebrows, but there could be reasons you'd want one.

Let's crunch the numbers and consider the potential savings, minus any golden rays.

Cost and Return on Investment

The initial cost for a home battery system can set you back a tidy sum, typically around £4,500. Return on investment (ROI) is a longer game here; without solar panels, you're relying on cheaper, off-peak grid electricity to charge the battery. So, it's a bit of a slow burner:

  • Buying low (off-peak) and selling high (peak times) can shave pounds off your energy bills.
  • Anticipated life expectancy of a home battery is between 10-15 years, bridging the gap until you may consider solar panels.

Government Incentives and Savings

Now, onto the juicy bit – government incentives. While there's no brolly for a rainy day, the UK government does offer some incentives to soften the blow on your wallet:

  • Enjoy a 0% VAT relief on energy-saving products, including home battery systems.

So, while you won't be flashing cash like you've hit the jackpot, there's a strategic reason to invest in a battery without the solar spotlight.

The Perks of Going Battery-Only

The Perks of Going Battery-Only

You'll find that this approach offers significant advantages, especially when it comes to powering your home during outages and managing electricity costs.

Power Security During Blackouts

  • Immediate backup power: In the event of a power cut, your battery system kicks in instantly, ensuring your lights and essential appliances keep running without a hiccup.
  • Energy independence: You're not solely reliant on the grid, so during widespread blackouts, your home becomes a beacon of light in a dark neighbourhood.

Shaving Off Peak-Time Energy Bills

  • Cheaper energy during peak demand: Battery storage allows you to use stored energy during peak times when electricity prices surge.
  • Time-of-use tariffs optimisation: By charging your battery during off-peak, cheaper rate periods and using the energy during peak times, you cleverly sidestep the highest rates.

In a nutshell, you're not just buying a battery; you're investing in peace of mind and a jolly clever way to manage your energy spend.

How Home Battery Storage Works

Understanding Home Battery Storage

Home Battery Basics

The main point of home battery storage is to have your essential power on hand whenever you need it. Consider it like an energy savings account; you're preparing for a brighter future. It's incredibly beneficial for those aiming for energy independence or just looking to reduce their electric bills.


The capacity of a home battery is measured in kilowatt-hours (kWh), reflecting how much electricity it can store.

For context, according to Ofgem, the average British household, which typically comprises 2.4 residents, consumes about 2,700 kWh of electricity annually. This equates to approximately 242 kWh of electricity per month.

A typical home battery system in the UK might offer anywhere from 5 to 15 kWh of storage, which can significantly support daily energy needs, especially for households aiming to optimise their energy usage or to rely more on renewable sources.

Battery Storage System

This term refers to the complete setup that includes not just the battery, but also the management system that oversees charging and discharging, and often an inverter to convert stored DC energy into AC power for home use.

A comprehensive system ensures your home efficiently utilises the stored energy, potentially saving an average household up to 50% on their electricity bills, depending on usage patterns, local utility rates, and the system's capacity and efficiency.

Energising UK Households

Embrace independence with a home battery storage system that allows you to store surplus energy during low-demand periods (such as the early hours) for use when electricity prices soar.

  • Peak Electricity Rates: On average, electricity prices during peak times can be significantly higher compared to off-peak hours. For instance, peak rates can be as much as 30% to 60% higher, according to industry data. A home battery system enables households to avoid these peak rates by using stored energy instead.
  • Reliability During Power Cuts: With over 1 million UK homes experiencing power cuts each year, having a home battery can be a game-changer. Not only does it provide a sense of security, but it also ensures that essential functions like lighting and heating continue uninterrupted. This reliability is increasingly critical as extreme weather events become more common, leading to more frequent and widespread power disruptions.

Incorporating a home battery system not only offers financial savings by dodging peak tariffs but also ensures your home remains powered during unexpected outages, adding a layer of comfort and security to your daily life.

Types of Batteries Available

Now, there's no need to worry; selecting the right battery isn't as complicated as it seems. Here's the lowdown on the different types:

  • Lead-acid: Old school, but cost-effective. Think of it as the vinyl records of the battery world.
  • Lithium-ion: The hip new tech on the block. A tad pricey, but they pack more punch in a smaller package.
TypeCostEnergy DensityLifespan
Lithium-ionMore ExpensiveHigherLonger

Frequently Asked Questions


How much does it cost to run battery storage without solar panels?

Running a home battery storage system without solar panels means you'll still cop the cost of electricity from the grid unless you've got another renewable source up your sleeve. You're looking at an outlay of approximately £4,500 on average for the storage system alone.

Can I install a home battery system myself?

While a bit of DIY spirit is grand, setting up a home battery system is not a stroll in the park. Professional installation is recommended to avoid a frightful shock or a muddled mess.

Can I go off-grid with a home battery system?

For a fully off-grid setup, it's essential to have a system with sufficient capacity to meet your home's energy demands. This includes a large enough battery for energy storage and a solar charge controller to balance energy production and consumption, ensuring the battery isn't overloaded too rapidly.

How long can a solar battery power a house during an outage?

Without the use of air conditioning or electric heating, a single 10 kWh battery can sustain the essential electrical needs of a typical home for a minimum of 24 hours, with the potential for longer duration through judicious energy management. Coupling this battery with solar panels enhances its capability, supporting a broader range of electrical systems and extending the backup power supply duration.

How much battery do I need to power my house?

Size does matter when it comes to storing your juiced gems. A typical home battery capacity ranges widely, so tally your energy usage to opt for a size that won't leave you power-thirsty.

Usage LevelBattery Size (kWh)Example Usage
Low<10 kWhSmall Flat
Average10-20 kWhFamily Home
High>20 kWhLarge Home / High Demand

Is a home battery worth it without solar?

A lot of homeowners might not realize that battery storage systems can operate separately from solar panels. These systems can draw and store electricity from the grid, making it available during power outages or periods of high demand. This capability provides a dual benefit of saving on electricity costs and enhancing energy efficiency, even without the installation of solar panels.

Can you add batteries to your existing solar system?

Yes, you can upgrade current systems by adding a solar battery bank. This enhancement significantly mitigates the effects of power outages, ensuring that solar-generated electricity is accessible around the clock. Compatibility between solar panels and energy storage systems is generally assured.

How do I connect battery storage to my house?

Setting up a home battery involves standard electrical procedures. This includes securely attaching the battery to a wall or placing it on the floor and connecting it to an inverter. The inverter's role is to transform the battery's DC (direct current) power into AC (alternating current) power, which is what your household appliances use.

How much can you save on your bills with home battery storage?

To calculate your average annual bill savings with a home battery, follow these steps:

Identify the capacity of your solar battery.

Example: 12 kWh

Multiply it by the average number of charges/discharges per day.

Example: 12 kWh x 2 charges/discharges per day = 24

Multiply the result by the difference between your grid rate and the solar feed-in tariff.

Example: Grid usage rate (30c/kWh) – solar feed-in tariff (7c/kWh) = 23c/kWh

23c/kWh x 24 = $5.52 average bill savings per day

Multiply this result by 365 (the number of days in a year).

$5.52 x 365 = $2,014.80

And that's how you calculate your annual bill savings with a battery!