Contractor Blog

David Woon

Recent Posts

SolarEdge Optimisers vs Enphase Micro-inverters

David Woon · 04 Mar 2022

In a perfect world, UK roofs would all face south, with a 35° pitch and no shading in sight. But we don’t live in a perfect world. As solar installers, we have to find clever ways to maximise the potential power from roofs of all make ups, orientations and shaded spots.

The most common suggestion to do this is with micro-inverters or power optimisers, which are designed to improve performance at the panel level. But there are risks, such as high costs to access and repair them if they fail, and sometimes you’re better off with a regular string inverter.

So which is the best solution? Let’s focus on the most popular brands, and compare SolarEdge optimisers vs Enphase micro-inverters.

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Topics: Solar PV

Spirit Speaks at Solar & Storage Live 2021

David Woon · 26 Nov 2021

Rewinding to the start of summer, we released a blog digging deep into the analysis of solar panel shading and the effective ways it can be mitigated. On the back of the technical flavour of this blog, I was contacted by Solar & Storage Live and invited to speak on a panel at the event.

The show brought together manufacturers, suppliers, installers, and councils as well as many other personnel from the industry, with over 4,000 attendees across the three day event. This provided a great opportunity to meet other members of the solar, storage, and electric vehicle industry as well as providing valuable insight into established and emerging technologies in the market.

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Topics: Battery storage, Spirit Energy news, Solar PV

Solar Panel Shading: Analysis and Solutions

David Woon · 10 Jun 2021

Solar PV panels work by converting sunlight into DC electricity which then undergoes a DC-AC conversion via an inverter (or multiple micro-inverters) to be used in your household. As the energy generation is dependent on the irradiance or amount of sunlight, it is no surprise that shading is the biggest enemy when it comes to solar PV.

Technologies over the years have dramatically improved to mitigate against the effects of shading, but like with any technology the most appropriate system specification needs to be deployed for a given scenario to yield the greatest benefits.

In the following solar panel shading analysis, we’ll investigate the causes, impacts and solutions for solar PV systems.

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Topics: Solar PV, Inverters

Heat Pumps with Solar Panels and Battery Storage

David Woon · 04 Dec 2020

Image source: Wikimedia.

With more and more properties looking at reducing their reliance on fossil fuels, becoming more sustainable, and increasing their grid independence, opting for a heat pump ticks a lot of these boxes. Heat pumps may also see a significant rise in the coming years due to the announcement that it is highly likely gas boilers will be banned in new build properties in the next few years.

Though Spirit does not install heat pumps, we are interested in how they form part of a renewable energy powered home.

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Topics: Battery storage, Tariffs, Solar PV

10 Years of Spirit Energy: A Timeline

David Woon · 28 Jan 2020

As it’s our 10th birthday today, we felt that it would only be right to reflect on some of the most significant moments of our lifetime. It has been a decade of change within the company and the world of renewable energy, with shifting government incentives, growing awareness of climate change and improving technology. The makeup of Britain's electricity supply has changed dramatically over recent years, with approximately a third of the energy now coming from renewable sources. As Spirit continues to grow we will hopefully see the number of homes and businesses generating their own free and clean electricity increase, helping to further decarbonise the UK’s energy mix.

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Topics: Battery storage, Spirit Energy news, EV charging, Solar PV

Solar Panel Orientation

David Woon · 02 Aug 2019

Solar panel orientation is a key determining factor in the output of a solar PV system, as it dictates how much sunshine the panels will see over the course of the day. The more sunshine they see the higher the output. In the UK the optimum orientation for a high generation is to face the panels due south. However; what happens if the panels face off south or even directly east or west? 

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Topics: Solar PV