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Domestic Solar Panel Installers


Inflation linked returns of ~ 10%, tax free, for 20 years. Solar PV is reliable, low maintenance and can look as good as this...


"Spirit provides an exceptional service - prompt and accurate responses to all queries, quick installation time, and a very neat and tidy installation on the day."


On-roof, in-roof, full-roof, solar glass and ground-mounted systems, installed by our in-house solar panel installers.

Are Solar Panels Worth It?

The cost of solar electricity is around 9p per kWh without export income. If you take into account 50% export paid at 5p per kWh, the lifetime cost per kWh is as low as 7.5p...  

If you are a homeowner and you intend to stay in your house for a reasonable time (7-10 years +), a solar PV installation makes seriously good sense.

Here are the main reasons hundreds of our residential customers installed domestic solar panels:

  • Grid independence - provides around 60% of annual electricity requirement, increasing to ~ 80% with solar storage.
  • Protects against rising electricity prices.
  • Bill savings in the region of £200 - £500.
  • Reduced carbon footprint, helps to reduce air pollution and tackle climate change.
  • Building Regulations compliance for new builds.
  • Reliable, low maintenance and very satisfying!

Get in touch

If you would like free advice, please call us on 0118 951 4490, or click here:

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Costs, subsidies and payback time

Domestic solar panels usually cost around £1,400-1,750 per kWp installed, depending on roof access costs, roof covering and roof pitch (flat, sloping etc). A 4 kWp system will cost anywhere between £5,500 and £7,000 inc VAT.

A kWp typically gives a saving of around £100 per year, so £400 per year for a 4kWp systemgiving a payback time of around 15 years.  The panels will last 25 years or so (with one inverter replacement expected during this time).  The % return over 20 years is usually in the order of 9% (IRR%). This is non-taxable, so compares very favourably to any other investment, especially one that depends only on the sun coming out.

The lifetime cost per kWh of solar energy cost is remarkably low, around 7.5p.

On average over 25 years (taking into account degradation of panels), a kWp will generate between 850kWh and 1000kWh a year.  That's around 20,000 kWh over the life. Before maintenance costs the unsubsidised cost per kWh of solar energy is only 9p. Now that's something to shout about! 

If you then subtract the export income, assuming 50% of solar is used on site, the cost per kWh falls to around 7.5p per kWh! The grid cost is 15p+ for the typical homeowner, and rising .... and rising.... and set to rise a little bit more when the coal fired power stations have all been shut down (target date: 2025). 

For more detail, see our recent blog.

Have you considered battery storage? Store excess solar on site, avoid peak grid charges, provide a back-up ... and don't forget the VAT incentive

If you are considering installing solar PV, we strongly recommend you consider battery storage at the same time.  Click here for more information.

Note that when battery storage is installed at the same time as solar PV, the 5% VAT rate applying to the solar PV installation will also apply to the battery storage system.  Furthermore, there is a saving to be made by purchasing an all-in-one inverter / charger. Overall, savings of over £1,000 can be made by installing battery storage at the same time as solar, rather than retro-fitting storage at a later date.

Why choose Spirit to install your solar panels?

We’re MCS approved solar pv installers – an award winning, specialist company that has installed around 2,000 solar systems, working both for homeowners and in the commercial sector.

We are passionate about solar technology and can help you find the right solution, whether that’s on-grid, off-grid, on-roof or in-roof.  We keep abreast of the latest developments in building integrated PV and in battery storage, and all of our systems utilise best-in-class technology, customised to meet the requirements of our clients.

We don’t employ pushy salesmen – just technical people, passionate about energy efficiency - who will provide you with a solar PV installation combining technical excellence and value for money. With systems typically lasting 20 years or more, we are here to support you and your system over the long term.

All projects are managed in house and installed by our solar panel installers. 

How do I size my system and which kit should I choose?

We cover these questions in our knowledge bank and in our 15 Minute Residential Solar Installation Guide. Here are some links:

Which solar panels should I choose?

Which inverter do you recommend?

On-roof, in-roof or building integrated?

Residential Solar PV Installation Guide

15 Minutes for everything you need to know about solar PV installations.


Solar Panel Installer Download now


What is an MCS Approved Solar PV Installer?

The Microgeneration Certification Scheme was set up in 2008 to protect consumers - and provide reassurance to them - by setting such standards and requiring manufacturers and solar PV installers to register for the scheme in order for installations to be eligible for the Feed-in Tariffs (closed 31st March 2019).  Spirit is inspected every year to ensure that we continue to exceed the required standards.

Call us on 0118 951 4490, request a quote online, or email your plans to  We would love to talk about your project; there is no charge for an initial consultation or quote.

Spirit Energy | Homeowners Solar PV

Areas We Cover

We install within a 90 mile radius of ReadingBerkshire, a 50 mile radius of Coventry and a 50 mile radius of Telford:


Call us on 0118 951 4490 to discuss your project, or send in your plans for a free quotation.

Free 15 Minute Residential Solar PV Installation Guide

Domestic Solar Panels.jpg Download now

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