Solar Battery » How Do Solar Panels Work on Cloudy Days?

How Do Solar Panels Work on Cloudy Days?

Our Smart Battery saves money for 1,000+ UK households.
Find out how much you could save.

Solar Panels on Cloudy Days

We get this question often. You’re sat at home browsing the Internet whilst it rains outside. That’s how the UK is a lot of the time, dreary, overcast and inconsistent. Sure, recent summers may have seen a glorious stretch of hot weather and clear skies for a few weeks, but the majority of the time this isn’t the case. You want to push forward with a lifestyle change at home, ditching traditional energy sources and becoming environmentally responsible by using a renewable energy source.

Get your personalised free quote

Solar panels have become more popular in the last few years, and less expensive to boot, but many customers have questions about their all-year-round viability, namely:

  • do solar panels work on rainy days?
  • do solar panels work on cloudy days?
  • do solar panels work in winter?

At Moixa, we have worked with over 1,000 customers in recent years. What we have heard back as feedback is that solar panels have helped changed home energy usage for the better. Not only do they give back a sense of control over the energy consumption and creation of a household, they help to significantly reduce energy bills, help homeowners to reduce their environmental impact and can even add value to properties when it comes to potential sale and refinance options. So, as for how do solar panels work on cloudy days, we will enlighten you on this throughout this guide.


Some key solar battery questions are covered in these guides:

How much money does a solar battery save?

How do solar batteries and solar panels work on cloudy days?

How much electricity does a solar panel battery system produce?


How do solar panels work when it’s cloudy?

We are used to cloudy weather in the UK, and as a homeowner looking to install solar panels we can understand why you might initially be worried, but there is no need to be. Although a cloudy or overcast day is not the optimum condition for solar panels to create electricity, they still can, even in limited daylight. What you’ll notice is that around a third of the electricity is produced when compared with the amount that is created on a completely clear day. This should still be enough to power a number of appliances throughout the day.

The exact amount of electricity produced will depend on the density of the clouds and the type and size of solar panel system you have installed, but you have to consider the year as a whole before making a definitive decision on whether to install solar panels at your home. Over the course of a year, even with the cloudy weather in the UK, our customers are experiencing up to 50% on average in terms of annual energy bill savings.

Even better, you can then add in the further benefits of a GridShare membership and generating clean energy to export to the grid. At Moixa, we offer every one of our Moixa Smart Battery customers the opportunity to join GridShare Membership. This comes with a free extended warranty for your Smart Battery and allows Moixa to unlock additional value from your battery by supporting the grid through a ‘Virtual Power Plant’.

GridShare Membership is one of the ways in which Moixa looks to support a low-carbon future, powered by renewable energy, by balancing the Grid with spare battery capacity.

If you sign up to GridShare Membership, not only do you receive an additional £50 per year for the first three years, but we will also monitor and report back on the impact of Grid Service involvement on your Moixa Smart Battery and make sure we reimburse you for any savings missed.

Get your personalised free quote

Can cloudy locations be an advantage for solar energy?

You might not think so, but a cooler, cloudier location is actually a better fit for solar power than places with extreme heat. This is due to the fact that during high temperatures solar panel systems can begin to become too hot to function correctly, causing long-term maintenance problems that are hard to correct in some cases.

There is also a phenomenon known as the ‘edge of cloud’ effect, where on a partly overcast day the sunlight can be magnified around the edges of a cloud, allowing solar panels to produce more electricity than on some completely clear and sunny days. So, even if you have one cloudy day, you’ll still produce 10-25% of the normal solar energy from a clear day, but over the course of a year you’ll see significant production and subsequent energy bill savings.


Why buy a solar battery?

  • Battery can be added to existing solar panels
  • Unused solar energy can be stored for use 24/7
  • Average annual savings from £425 to £680
  • New and improved 4.8kWh battery capacity
  • 25-year panel warranty, 10-year battery warranty
  • Free extended solar battery warranty for as long as you are a GridShare member


The value of the Moixa Smart Battery

The limited production of electricity during cloudy days was one of the reasons why we put our Solar Battery as part of the standard package alongside solar panel installation. It ensures that you make the most of a clear day when you can soak up as much sunlight as possible. Your solar panel system will be powering the home, but at the same time charging the solar battery for later use.

It gives you greater flexibility to continue using solar power at night, when the sun has gone down, or on cloudier days when your solar panel systems are not producing as much energy as during a clear day. You can benefit from the storage capabilities of our new and improved 4.8kWh Smart Battery unit. This can be installed in a variety of locations around your home.

Get your personalised free quote

How much will I pay for solar panels?

Now you know the answer to the questions of ‘do solar panels work on cloudy days?’, ‘do solar panels work on rainy days?’ and ‘do solar panels work in winter?’ we can help you figure out the right cost for your specific needs.

Our friendly team of experts will talk through your energy requirements to help you choose the right system for your needs and budget. Our Receive a Quote page will help you find a more precise price, but for now, here’s an example of solar battery cost on our flexible payment terms:

  • You’re quoted £4,450 for a 4.8kWh Moixa Smart Battery (inc. VAT & installation)
  • You pay a 50% deposit of £2,225 followed by 12 monthly payments of £185.42 to settle the original balance.

Visit our Contact page to speak to a member of our team. From there, we can offer more answers to your question of ‘how do solar panels work on cloudy days?’ and put in motion the process of installing solar panel systems and the Moixa Smart Battery at your home.


See what our customers are saying about their Moixa experience…

Play Video

Moixa is a leading British technology company, making solar technology smarter in order to help our clients to save up to 50% on their energy bills.

Founded in 2006, we have been developing intelligent battery products since day one. We have always focused on making energy more intelligent and efficient for homes, supporting the move away from fossil fuels by optimising the way people generate, distribute and consume renewable energy.

Our focus is always on value for the end user, and we believe a sustainable future is one that brings benefits to all involved. Through our solar battery and solar panel bundles, we have helped thousands of households to save money. Our systems allow you to store solar power and/or cheap-tariff electricity, ready to use at a time that suits your home’s energy needs and maximises your savings.

Today, with more than 45 employees, and offices in London and Manchester, we are ready to help provide ideal renewable energy solutions to clients around the UK. Each and every home solar project we take on is marked by our core values of Innovation, Collaboration, Integrity, Quality and Passion.

Our team of friendly and knowledgeable experts are always happy to speak to individuals and families about finding just the right solar battery system to meet their home’s energy profile, ensuring you get lasting value that will carry many years into the future.

More About Moixa

GridShare Software

GridShare Software

Adds intelligence to the world’s batteries and facilitates smart energy storage and sharing

Read more
Trustpilot Reviews

Trustpilot Reviews

Find out what our customers think about our Moixa Smart Battery and service.

Read more


Learn more about how the Moixa Smart Battery works to make the most out of solar energy.

Read more
About Us

About Us

Learn more about Moixa and how we want to help the world live in a renewable future.

Read more
Leave your details to receive a callback from one of our Solar Storage Specialists