South-facing solar panels produce more electricity per panel than east or west-facing ones, but east-west systems often produce more electricity overall, and the daily generation profile can be a better match for how most households actually use power. Whether south-facing is "better" depends on what kind of roof you have and what you are trying to achieve. For many homes, the most useful answer is that neither orientation is best used exclusively.
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.
Beaconsfield Services on the M40 has 840 solar panels on its roof, forecast to save the business around £67,000 in the first year alone. That single roof illustrates why motorway service stations, among the most electricity-hungry buildings in the UK, are also among the best candidates for commercial solar. The reason comes down to how relentlessly these sites use power, and how much of that demand solar can offset directly.
Spirit Energy now installs solar and battery systems for homeowners anywhere in the UK, not just within two hours of its Reading base. The only thing that changes outside that radius is who physically carries out the survey and installation: a local technician, vetted by Spirit Energy, rather than one of its own in-house teams. Design, specification, contract, warranty and aftercare all stay with Spirit Energy regardless of where you live.
The Minimum Energy Efficiency Standards (MEES) currently require commercial properties in England and Wales to hold an EPC rating of E or higher to be let on a new or existing tenancy. That has been the law since 1 April 2023. Properties below E are unlettable unless a valid exemption is registered.
TL;DR From 24 March 2027, every new home in England must have solar PV under the Future Homes Standard in accordance with the final Approved Documents. It is a functional requirement of Building Regulations, not an optional upgrade.
For those who have their finger on the pulse of the solar energy market, it's becoming obvious that there is an increasing shift towards the manufacture and use of n-type solar from p-type panels in both commercial and domestic settings, to the point where the former now dominate. But why has this shift come about, and more fundamentally what is the difference between the two?
In the space of just a few years, the average panel we install on domestic projects has shot up from around 315W to at least 375W, with more and more residential modules breaking the 400W barrier.
This is down to a few factors, such as the widespread adoption of new, more efficient technologies, bigger cells and bigger modules:
When researching solar PV, you may have come across the phrase ‘tier 1 solar panels’. It’s used as a selling point by some manufacturers and installers to demonstrate the reliability of their products. But is that really the case?
