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Spirit Energy

Spirit Energy

4.8(203 reviews)See reviews ↓·Reading

About the company

Spirit Energy, trading as Spirit Solar Ltd, was founded in 2010 by Erica Charles. Ian Charles serves as Managing Director and Financial Director, while Vishal Giga is Operations Director and Justin Parsons is Head of Installations, both having joined in 2010. The company has installed over 6,000 solar and battery systems and specialises in bespoke design and installation of solar and battery storage systems. Its project managers and installers are all in-house. In 2016, Spirit Energy developed the first free online solar calculator. It is a Which?

Trusted Trader. Spirit Energy serves sectors including agriculture, care homes, contractors, corporates, councils/community, data centres, facilities management, golf courses, healthcare, hotels, housebuilders, schools, service stations and warehouses. Installations include Philip Dennis Foodservice in April 2024 and Hansgrohe's headquarters in September 2024. Services encompass solar PV, battery storage and EV charging, alongside CPD training and seminars, and solar financing options including Solar PPA, Hire Purchase Agreement and Capex.

What customers say

Based on genuine customer reviews

Reading-based Spirit Energy has built a reputation among customers for the design and installation of solar photovoltaic arrays paired with battery storage, most often Tesla Powerwall units and expansion packs. Reviews time and again mention the care taken during the planning stage, where system options are explained in detail and calculations for payback periods are worked through without sales pressure. Named member of staff Mark Golding is singled out for guiding customers through the choices and for his patience with those new to solar.

Customers writing about their orders describe installations that were well organised and finished on schedule, with attention paid to neat cable routing even when specific requests were made. Long-term users report systems running flawlessly for periods of two and a half to eight years, delivering significant savings and allowing overnight charging at lower tariffs. One thing mentioned again and again is the quality of communication before and after the work, with post-installation support continuing well beyond handover. The advice offered is described as thorough and professional, and the resulting systems are considered excellent, prompting several customers to recommend the firm to neighbours and friends.

Electrical engineerGreen energy supplierSolar energy system serviceSolar panel maintenance service
Spirit Energy — Customer photo
Spirit Energy — Customer photo
Spirit Energy — Customer photo
Spirit Energy — Customer photo
Spirit Energy — Customer photo
Spirit Energy — Customer photo
Spirit Energy — Customer photo

Reviews

Reviews are taken from publicly available sources.

FA
Frank Atkins19 July 2026

Spirit Energy, are a very professional company, Mark Golding helped us novices negotiate our way round the whole Solar panel system and took time to explain the system that would be right for our house, with no sales pressure at all. Their website is outstanding, and we were able to use it check out every detail of the system that suited us. Well Done Spirit Energy

ZM
Zoltan Markella24 June 2026

Fantastic service from end to end! Spirit Energy installed a Solar PV + battery system almost 3 years ago and we had a very pleasant experience with them. From the initial pre-sales/planning stage through installation and post-install support. Got a 6.5kW solar array paired with a 5/20kWh myenergi inverter/battery system. I was very particular about cable routing and the installers had no issues with complying to all my requests! Ended up with a super-neat install. I had some issues with the myenergi batteries and the team helped us to resolve these issues. Utilising the first years' learnings, we managed to set up the energy management (though Home Assistant) perfectly for the second year and had sub-£0 electricity bills for 6 months! Currently looking at 11 years RoI, which is shorter than initially estimated. Shout out to Megan, Jana, Ryan, Alpar and all others who were part of our journey! Thank you!

SM
Steven Moxey9 June 2026

I had a very good experience with Spirit Energy who installed a Tesla PW3 + Battery Expansion packs and some extra solar panels. The installation was very well organised and completed on schedule. I would be very happy to use Spirit Energy again for future work.

IB
Ian Bowman13 May 2026

Had a great experience with Spirit Energy when they designed and installed our system. We have PV and a battery and we’re an unusual installation due to our house being listed. Good advice, thoroughly professional and the system is excellent. Have personally recommended to a couple of friends and happy to do so here electronically. Our install was in June 2024 and the performance from then until now has been flawless

SJ
Steve Jones9 May 2026

An excellent company to deal with. We had solar panels already, but decided this was the time to add a battery. Having discussed the same with the guys at Spirit Solar we were able to do calculations with them to estimate the pay back time, which made economic sense give the installation cost and the absence of VAT on retrofits. We chose a Tesla Powerwall 3 and were delighted with the service and fitting throughout. From the guys in the office through to the site surveyor through to the electrician and his mate who did the installation. The only ‘drag’ in the system was the paperwork, but Spirit Energy helped us through it all making it as smooth as possible. All-in-all a seamless operation by a company who offers a 1st class service with people who know their business and are a delight to deal with.

RW
Robin Warwick7 May 2026

Spirit Energy installed our 12 solar panels in three arrays of 3, 4 and 5 panels in June 2022. The Tesla Powerwall 2 was installed in February 2023. They also laid in a car charger cable for later use. We went with roof level inverters because that was the best way of optimising the system at the time. We initially chose Spirit Energy because of the amount of useful information on their website when compared to others plus the help and advice given by Mark when came to do the initial visit. They kept us well informed throughout the installation which went through without ant hiccups. The installation team were a dream to have round the house also. The system has operated faultlessly over the past 3 years save one minor hiccup when the Enphase Envoy lost the panels but this was only a reporting problem which Spirit Energy support team quickly got rectified. We are extremely happy with the performance of the system and it is doing exactly what we wanted it to do namely reducing the running cost of the house. We are with Octopus and are using their Intelligent Flux tariff which works well with the system. We would have no hesitation in recommending Spirit Energy.

JC
J Cobb4 May 2026

My system was installed in January 2023 and has been running perfectly for 2½ years. It comprise three solar panels and 13.5kWHr Tesla Powerwall2. Given that I get electric car charging rates from Octopus Energy, I use overnight electricity to top up the battery (plus solar) and never pay peak time rates. Apart from car charging, I use about 7kWHrs a day to run the house which is perfect for my system design. Lat year my solar panels generated just over 1MWHr of energy which represented about a quarter of my total electricity usage (including car charging). I chose Spirit Energy through a recommendation from Tesla UK and had no previous knowledge of them. I feel I made the right choice as their performance in understanding my requirements and the design of a system that matched this was really excellent. The quality of installation and commissioning work was professional and I have experienced no problems since it was installed. We have lived though a number of electricity feeder issue in our road and each time the Powerwall has isolated itself and then resynchronised so we did not notice the outage. One small point to consider with car charging; Spirit Energy recommended that the car charger should be connected to the battery circuit and not directly to the grid connection so that I could measure my total usage and system performance. This was fully articulated to me, but in retrospect it has the disadvantage of not being able to charge the car in peak hours (which I rarely do) without draining the battery; in this case I must raise the Powerwall minimum charge capacity on the app each time, and then remember to swap it back to 20% after charging. They are a great company to work with and I am very happy to recommend them for their professional engineering and installation skills.

Other companies in Reading

Contact
+441189514490www.spiritenergy.co.ukSpirit Energy, Spirit House, 25 Albury Cl, Reading RG30 1BD
Working hours
Monday09:00–17:30
Tuesday09:00–17:30
Wednesday09:00–17:30
Thursday09:00–17:30
Friday09:00–17:30
SaturdayClosed
SundayClosed