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Battery Storage Installations

Looking to start your solar battery journey?  You’ve found the right place.

Remote battery system designs until you’re ready for a survey. Leave your details in the box on the right and one of our team will reach out to you on the same day.

  • 0% VAT to pay as of March 2024
  • Get paid up to £4 per kWh with Demand Flexibility Scheme
  • With or without power-cut prevention
  • Interior or exterior installations available
  • Tesla Powerwall Certified Installer
  • All with a price match guarantee!
by 100% of customers


Talk to us today and get the information you need to make an informed decision in your own time.
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Our Process Made Simple

We like everything to be simple and easy, from beginning to end.


Telephone Consultation

We use satellite imagery to identify your property and remotely generate your battery storage system installation proposal. This can be refined until you’re happy with the design, brand choices and battery installation cost, ensuring it aligns perfectly with your goals and budget.


In Person On Site Survey

We will never send a salesman to eat all your biscuits. We will arrange for an independent surveyor to assess cable runs and check equipment install locations once you're happy for a survey. We’ll ensure the remote design is accurate and nothing is missed so that the battery system installation can proceed.


Battery Storage Installation Day

After receiving grid approval for your battery installation (if it discharges to the grid), our in-house electricians complete your battery installation in one day. Once complete we guide you through the monitoring platform and help you get the most out of your system.

Home Battery Storage: a local solution for global problems.

There’s more solar batteries being installed now than ever, some without solar panels! Is there any question why? Recent energy price hikes have halved the return on investment, making batteries an attractive option for most homeowners to consider.

Solar batteries are a low maintenance ‘set and forget’ technology. A power storage vessel of your own that pays for itself, increases your property value and lowers your carbon footprint.

With our cars, heating and the world around us becoming more dependant on electricity, it’s only a matter of time before there’s batteries everywhere

Reach out today to receive a free-of-charge, no obligation remote design and quote for batteries in your home.

Store your own power and reduce your reliance on the grid
Never experience power cuts again with whole home back up functionality
Get paid to help the grid with the Demand Flexibility Scheme AND 0% VAT from March '24
Drastically reduce your carbon footprint consuming more solar energy
Contact Us Today!

Frequently Asked Questions

There are pros and cons to each and no right or wrong, we can gladly advise which would would suggest with your home battery installation, explaining the logic behind our recommendation.

DC coupled batteries use a hybrid inverter, meaning that the inverter for the solar is the same inverter for the batteries. The advantage of this is that excess made energy is fed directly into your batteries in DC. The energy is only inverted once, as it leaves the battery (this is more efficient than AC coupled batteries, saving two steps of inversion). However, you’re limited on maximum system power delivery by relying on one inverter…

AC coupled batteries have a dedicated inverter for the battery, instead of relying on one inverter for battery and solar. This means excess made power has to be inverted from DC to AC through the solar inverter, then back into DC to be stored in the batteries, meaning another two steps of inversion. However, if there is a high demand at the property, there isn’t the ‘bottleneck’ of one inverter’s size. The solar inverter can deliver energy in conjunction with the battery inverter, allowing for a higher power delivery.

It’s a really common question and again, there’s no right or wrong- it’s mostly a matter of preference.

All lithium based batteries don’t perform as well in colder temperatures, this is down to the chemical composition. Similarly, when they’re “too hot” they will cease operation. Most batteries will cease operation if they reach 50°C which is very unlikely in most loft spaces in the UK. I would rather my battery stop working when it’s too hot, as the inverter will likely be covering the consumption, rather than it not working when it’s too cold, as it’s unlikely the solar will be generating too.

In short, no. Lithium batteries don’t require distilled water or ‘servicing’ like lead-acid based batteries did. They’re very much a set and forget technology.

It would be unfair to say that batteries aren’t a fire hazard, the same way that a toaster is technically speaking a fire hazard. People often have a 100kWh battery that charges at 7kW+, discharges at 500kW, gets thrown about at 2Gs in their internal garage and wouldn’t think twice about it (an electric vehicle). We’ve never had a battery fire in 10 years, the batteries are built with a plethora of technologies to prevent this ever occurring. Battery brands like Tesla or SolarEdge have the latest technology to lessen this possibility even further. The Tesla Powerwall 2 is still the only battery system on the market to incorporate a liquid thermal management system that enables it to operate in a wide range of temperatures from -20 to +50°C. The SolarEdge Energy Bank has the option of adding an inbuilt fire suppression system

As of March 1st 2024, there is 0% VAT on the retrofit installation, or addition of batteries to an existing or new system. This was at 20% VAT beforehand.

This could be your home battery installation...

CBF Lazaro
CBF Lazaro
December 5, 2023
Ended up not going ahead due to technicalities and planning permission requirements on my specific situation, but cahill renewables were the ones to go with if I did go ahead. Josh was polite and knowledgeable, got a very fair quote from them for a ASHP install and the quoting process was very pleasant and non pushy.
Praful Lakhani
Praful Lakhani
November 1, 2023
EXCELLENT - Every team from Sales to Scaffolding to Electrical to installers and tilers were just exceptional. Ours is a slate roof and required more careful work and matching. THEY EXCELLED in every respect. . They arrived on time, were most courteous and very clean and tidy.
Peter Laurence
Peter Laurence
October 23, 2023
A thoroughly pleasant and efficient company who were a great help throughout the solar panel "process". Great products, professionally fitted and our questions answered very promptly. A pleasure to do business with.
Jonathan Farnhill
Jonathan Farnhill
October 18, 2023
I have just had solar panels, an inverter and batteries installed in our house, and the service and support we received from Cahill Renewables was first class at every stage of the process. I have no hesitation in recommending them as a highly competent provider and installer of PV systems
Shulem Posen
Shulem Posen
September 21, 2023
10/10 Highly recommend. Very knowledgeable team who are experts in the field
attila czintos
attila czintos
September 11, 2023
Excellent team from the management team to the installers, very professional work. Thank you guys! Highly recommended team
Adrian JC
Adrian JC
September 9, 2023
It's not every day you have a solar PV system put in, so you want it doing right, from the word 'go.' Cahill's did that, and kept on giving outstanding service long after the work was done, the bill was paid, and the kit was powering our whole house. Cahill's went to great lengths to make sure we didn't just get what we wanted but also what we needed, including arranging the DNO authorisations for feed-in. They were open about what the system could and couldn't (and wouldn't) do, and about what it would (and does) provide. Their staff are no-nonsense, human, and straight-talking; technicians courteous and effective; contractors knowledgeable and efficient. Couldn't ask for more.
Ian Monk
Ian Monk
August 26, 2023
Recently had an installation of panels and batteries by Cahill. Installers we're excellent and have carried out a very neat and tidy install. Josh & Joe kept us informed at all times of what was happening and answered all our questions, before, during and after the process. Highly recommend Cahill Renewables
Simon Kleyn
Simon Kleyn
August 14, 2023
excellent attention to detail, minor bit of trunking that needed finishing due to our scheduling issues this took some time, Cahill did not give up and sorted the problem technician v picky and made sure the issue was resolved, great work :)
mark randall
mark randall
July 21, 2023
Very rare to find a company like Cahill that pays so much attention to the customer journey. From determining best panel/ battery/control solution, survey of property, scaffold set up, electrical installation and panel fitting - every step was superbly executed by specialists in their field and coordinated by a professional central team. To say the least, we are delighted , and have been very impressed by the amount of power we are getting too.

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Are you ready to start your battery journey with Cahill?

If you are looking for a battery installer near me, Cahill Renewables make it easy for you to find the perfect battery system to manage your energy better and reduce your bills. Whether you are looking for advice and guidance from an expert, or just want to understand the different systems available, our team of experienced battery installers near me is here to help. Speak with one of our trained battery system designers today.
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01206 646664
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Colchester & Canterbury
We are based in Essex and Kent.
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01206 646664
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Registration No: 084‍60430 | VAT number: GB180772691