Powering Change

Installing since 2010 · 0118 951 4490 · info@spiritenergy.co.uk

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'No hesitation in recommending Spirit Energy'

 -Peter Dennis, Managing Director, Philip Dennis Foodservice

'Superior level of technical design'

-Sam, Berkshire Homeowner

'Installation was better than seamless'

 -Giles Owen, Operations Director, Hansgrohe UK

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Spirit Energy is one of the most experienced solar and battery installers in the South of England, specialising in the bespoke design and installation of solar and battery storage systems. Founded in 2010, we have installed over 6,000 solar and battery systems, helping homeowners and businesses save millions on electricity bills, become energy independent, and cut their carbon footprints.

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Design your own solar & battery storage system using our free online calculator

In 2016, Spirit Energy developed the first free online solar calculator, enabling homeowners and business owners to design their own solar and battery storage systems without needing to contact an installer.

The tool is highly flexible. You can design a system with both solar and battery storage, or just one technology, and see how it would perform alongside heat pumps and electric vehicles. It also allows you to compare potential savings across a range of electricity tariffs.

While our solar and battery calculator is a great starting point, nothing matches the accuracy and value of a bespoke quotation from Spirit Energy’s highly trained specialists. Every part of your project is handled in-house — from design and engineering through to installation and aftercare — ensuring the highest standards at every stage. Get in touch with us for a free, no obligation quote.

Why Choose Spirit Energy?

Spirit was founded by Erica Charles, a mathematician who returned to Oxford in her 30’s to complete a Masters on the maximisation of photon capture by solar panels. Anyway, the maths taught her that a well-designed and well-installed solar system will generate a considerably superior return on investment compared to one where insufficient attention has been applied to the design details.

That ethos continues today with Spirit’s commitment to recruiting the finest engineers and installers and providing them with the best in-house technical training that the industry can offer… regardless of the cost…

-Ian Charles, Financial Director

Established 2010 - Spirit Energy35 Staff - Spirit Energy100% In-House Installation & Design Team - Spirit Energy136 Years of Combined Experience - Spirit EnergyFamily Business - Spirit Energy

Ian Charles - Financial Director - Spirit Energy - Compressed - Cropped 2

Ian Charles        Financial Director

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Vishal Giga
Operations Director

Joined Spirit in 2010

Vishal joined Spirit Energy a few months after Erica and Ian founded the business in 2010 as a project manager, and is now our Operations Director. All of our project managers and installers are in-house, and Vishal oversees them all and is in charge of making sure that every project goes smoothly and is installed on time. Vish has a wealth of experience with both commercial and residential projects, and directly manages every commercial project that we do, including our installations at Philip Dennis Foodservice in April 2024, and Hansgrohe's headquarters in September 2024.

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. 

"My ultimate goal is to ensure our operations run smoothly, delivering exceptional customer service and top-quality installations to every customer, domestic or commercial."

-Vishal Giga, Operations Director

"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

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Some of our Commercial Case Studies

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Latest Case Study

St Matthews Care Home - 98.74 kWp (Jan '26)

Introduction

St Matthews Care Home, part of the B&M Care Homes group, has taken a significant step towards improving both its financial resilience and environmental performance through the installation of a large-scale solar PV system. With energy-intensive operations running around the clock, the home required a solution that could reduce reliance on the grid while delivering long-term savings.

Read more...

Latest Blog

Do Solar Panels Reduce Your Electricity Bill in the UK? 2026 Guide

Posted by Alicja Kopinska on 20 Mar 2026

Why electricity bills keep rising in the UK

Electricity bills in the UK continue to rise because the market is still heavily influenced by global energy prices, particularly gas. Even though we generate a growing share of electricity from renewables, gas often sets the wholesale price of electricity. When global supply is disrupted or demand increases, prices rise across the board. This has been seen repeatedly in recent years, and it means households remain exposed to factors completely outside their control. As long as the UK relies on gas as a core part of its energy mix, price volatility is likely to remain.

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Some Products We Work With

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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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