Powering Change

Installing since 2010 · 0118 951 4490 · info@spiritenergy.co.uk
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Welcome to Spirit Energy

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Skip to our Battery Offerings

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Store excess solar for self consumption

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Buy cheap, off-peak power, to store and use later

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Become more grid independent

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Increase bill savings

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Mitigate rising electricity costs

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Protect against power cuts

Why Choose Spirit Energy?

"We're a family-run solar specialist that has been installing solar panels and battery storage systems throughout the South of England since 2010. We pride ourselves on our 100% in-house technical expertise and installation work, as well as our attention to detail, industry-leading design work, customer care, and the quality of our post-install support.

Installing solar PV & battery storage is such a large investment that it's paramount to work out the best specification and system design to maximise your return on that investment and make sure that the system ticks all the boxes. As such, we provide a free, bespoke design service for all of our clients, and are prepared to go back to the drawing board as many times as it takes to finely tune the design and achieve the best system and investment return for every household and building.

If you'd like to understand what you get when you request a quote from Spirit Energy, take a look at our case study series, Sam's Solar Journey. I'd recommend video 4."

-Tok Charles, Spirit Energy

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Residential Battery Storage

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Tesla Powerwall 3

Spirit Energy is one of the most established and decorated Tesla Powerwall 3 Premium Partners in the UK. We won the Tesla Excellence Award in 2021 and 2024, and typically install over 250 Powerwall units every year. In 2024, Spirit Energy was lucky enough to be selected by Tesla to install the first Tesla Powerwall 3 in the UK.

Learn More About Tesla Powerwall 3

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Sigenergy SigenStor

Launched in 2022, Sigenergy has taken the UK battery industry by storm, offering a battery system that is pushing the industry forward with many technological advances. Spirit Energy works very closely with Sigenergy and we install a lot of single phase and three phase SigenStor batteries with power cut protection.

Learn More About Sigenergy SigenStor

 

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GivEnergy Home Storage Systems

GivEnergy is a prominent British battery storage brand, offering an extensive range of versatile storage systems. Spirit Energy have completed a significant number of GivEnergy installations, including their popular 9.5 kWh battery and the highly regarded GivEnergy All-in-One. Unfortunately, following GivEnergy entering administration, we are no longer able to offer their products.

GivEnergy Battery Systems Knowledge Bank

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Victron & BYD Systems

Victron energy is one of the most established battery manufacturers in the world. Founded over 50 years ago, Victron began by building energy systems for commercial shipping vessels. Victron have since ventured into the home battery market, offering one of the most advanced and customisable battery systems available.

 

Victron Battery Systems Knowledge Bank

 

 

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How to learn more

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Read Spirit Energy blogs - learn from experts
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Meet the Team

Tesla Powerwall 3 Technical Breakdown - Everything You Need To Know

Sigenergy SigenStor - Everything You Need To Know

 

What is the Best Solar Panel in 2025? How to Choose the Best Solar Panel?

Mitigating Shade from a Chimney - Enphase not worth it? - Sam's Case Study Pt 4

Octopus Energy vs Local Solar Specialist - Choosing a Solar Installer

The Steps to Getting Solar and Battery | From Enquiry to Installation

Do You Need Battery Storage?

A home battery lets you store the energy your solar panels generate during the day and use it when you need it most, rather than sending it back to the grid at a low export rate. The more you can run your home on stored solar, the less you rely on your energy supplier and the more control you have over your bills.

Most home batteries can be configured to provide backup power during a grid outage, keeping essential appliances running until supply is restored. Whether it's a planned outage or an unexpected fault on the network, a battery gives you a buffer that most households simply don't have.

Electricity unit rates have risen sharply over the past few years and are unlikely to return to historic lows. A battery reduces the amount you buy from the grid at full price, insulating you from future price increases and giving you a greater return on any solar panels you already have.

On time-of-use tariffs like Octopus Agile or Intelligent Go, electricity is significantly cheaper overnight or during off-peak windows. A battery lets you charge at those lower rates and use that stored energy during the expensive peak hours, cutting what you pay without changing how you live.

A battery doesn't require solar panels to be useful. If you're on a time-of-use tariff, a standalone battery can still save you money by charging at cheap-rate times and discharging when rates are high. It's also a practical first step if you plan to add solar later. 

As Seen On

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Mark Golding - Vertical - Spirit Energy - Head of Sales

Mark Golding
Head of Sales & Design

Joined Spirit in 2016

My aim at Spirit is to make sure we get the right renewable energy solution for your home or business. It is a great feeling to take yourself off grid and generate your own power without needing to worry about power cuts or an increasing energy price over the next 25 years.

I have an in-roof PV installation at my home with a zappi and eddi. Having the technology you sell on your own roof fitted by the company you work for really helps to understand how the system works and what sort of experience a customer expects.

"At Spirit, we don’t believe in pushy salesmen. We employ well-trained and knowledgeable technicians who know our products, are up to date with the regulations and can carry out technical calculations. This lets us provide you with a detailed quote and plenty of guidance on what the best system for you is."

-Mark Golding, Head of Sales

Justin Parsons - Vertical - Spirit Energy - Head of Installations

Justin Parsons
Head of Installations

Joined Spirit in 2010

Justin is the backbone of the company and part of the leadership team. He has overall responsibility for the installers, electrical design and sign off of all systems as well doing a technical and structural survey for every project to ensure we can manage each job perfectly. His devotion and meticulous attention to detail has helped build Spirit into the reputable and trustworthy brand we are today. 

You will most likely meet Justin on your technical & structural survey where he will plan your entire installation and run you through every minute detail. 

"I know that the technical & structural survey is a step that other installers don't feel is necessary, but many of Spirit's customers appreciate the chance to talk to the actual installers before the installation date."

-Justin Parsons, Head of Installations

Accreditations

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Latest Case Study

Peterborough - 21.56 kWp (Mar '26)

Peterborough - 21.56 kWp (Mar '26)

Before installation, the household's annual electricity cost sat around £4,200, calculated against current tariff rates. Left unchecked, and assuming the long-run UK average electricity inflation rate of 7.2% (based on 2000 to 2022 data), that bill was projected to climb to over £22,000 a year by year 25, with a cumulative spend north of £275,000 across the same period.

Read more...

Latest Blog

What's The Best Battery Storage In 2026?

Posted by Alicja Kopinska on 17 Jul 2026
What's The Best Battery Storage In 2026?

The installed price gap between the Tesla Powerwall 3, Sigenenergy SigenStor, and Fox Evo is under 4% when measured on cost per usable kilowatt-hour of storage. Spirit Energy has installed all three, including the first Powerwall 3 commissioned in the UK, and the honest conclusion is that price alone should not drive this decision.

Read more...

We've installed thousands of systems since 2010, helping to make buildings across the South of England more energy efficient, as well as helping people save money and reduce reliance on the grid.
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Spirit Energy is the trading name of Spirit Solar Ltd  ·  UK Company Number 07138647

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