What Happens After Installation? Solar Aftercare Explained

Installing solar panels is an important milestone, but it is not the end of the journey. In fact, what happens after installation is just as important as the system itself. Effective aftercare ensures your solar PV system continues to perform efficiently, delivers the predicted savings and remains compliant for years to come.

At SolarTherm UK, we view aftercare as a core part of every installation we deliver across the South East. This guide explains what homeowners should expect once their solar panels are installed and why professional solar aftercare matters.

What Should You Do After Your Solar Panels Are Installed?

Once your solar panels have been installed, there are a few important steps to complete to ensure your system is working correctly and you are ready to benefit from your own solar electricity. Your installer should guide you through the handover process, but it is useful to understand what needs to happen next.

1. Make Sure Your Solar PV System Has Been Commissioned

Before relying on your new solar panels, confirm that your installer has completed the commissioning process and explained how your system operates. This should include checking the inverter, confirming that the system is generating electricity and verifying that any installed battery is operating correctly.

Your installer should also explain any remaining administrative steps, including relevant Distribution Network Operator (DNO) notifications or approvals.

2. Get Your Solar Monitoring App Set Up

Most modern solar PV systems offer online monitoring through an app or web portal. This allows you to see how much electricity your panels generate and, where the system supports it, how much energy your household uses, imports from the grid and exports.

Ask your installer to help you set up your monitoring account and explain what the different readings mean. Checking your system regularly will help you become familiar with its normal performance and spot unexpected changes.

3. Keep Your Installation Documents Safe

Your solar installation should come with documentation explaining the equipment, warranties and relevant certification. Depending on your installation, this may include:

• Your MCS certificate, where applicable.
• Electrical installation and commissioning documentation.
• Manufacturer warranties for your solar panels, inverter and battery.
• Instructions for your inverter, battery and monitoring system.
• Information about your export tariff and any relevant DNO paperwork.

Keep these documents somewhere accessible. They may be needed if you make a warranty claim, arrange repairs, change your electricity tariff or sell your property.

4. Check Your Electricity Tariff and Export Payments

If you want to receive payments for surplus electricity exported to the grid, check your eligibility for a Smart Export Guarantee (SEG) tariff or another suitable export arrangement.

You may need a compatible smart meter, an eligible installation and the relevant application documents. Export payments are not necessarily automatic simply because your solar panels have been switched on.

It is also worth reviewing your import electricity tariff. Using more of your own solar electricity can reduce the amount you buy from your supplier, while a battery may allow you to store surplus generation for later use.

5. Learn How to Get the Most from Your Solar Panels

Solar generation varies throughout the day and across the seasons. Where practical, running appliances such as washing machines and dishwashers during periods of strong solar generation can help you use more of your own electricity.

If you have a battery, learn how its charging schedules and operating modes work. The best settings depend on your household consumption, electricity tariff and whether you want to prioritise self-consumption, off-peak charging or another operating strategy.

6. Know Who to Contact if Something Goes Wrong

Keep your installer’s contact details and understand what support is available after installation. If your inverter displays an error, your monitoring app stops updating or your generation appears unusually low, record the warning message and contact your installer or aftercare provider.

Never open electrical equipment, remove covers or attempt repairs yourself. Your installer can advise whether the issue requires remote troubleshooting, an inspection or a warranty claim.

The good news: A properly installed solar PV system should not require constant attention. Once commissioning and handover are complete, regular monitoring and sensible maintenance are generally enough to help you keep track of its performance.

Commissioning and System Handover

Once installation is complete, your solar PV system is fully commissioned. This includes:

• Testing all electrical connections and safety systems
• Configuring the inverter and where applicable, battery storage
• Verifying generation and export functionality
• Ensuring compliance with MCS and DNO requirements

You will also receive a clear system handover, explaining how your solar panels work, how to read your monitoring data and how to get the most from your system.

Solar Monitoring: Keeping an Eye on Performance

Modern solar PV systems include online monitoring, allowing you to track generation and usage in real time. Monitoring plays a crucial role in aftercare because it helps identify issues early. Unexpected drops in generation can indicate inverter faults, issues with your panels or connectivity issues. Monitoring your battery will let you know if there are any issues charging or discharging. With proper monitoring, many issues can be resolved quickly, with minimal disruption to your solar savings.

Ongoing Solar Aftercare and Support

Professional solar aftercare does not end once your system is switched on. Ongoing support typically includes:

• Technical assistance if your system displays a fault
• Advice on optimising self-consumption and battery usage
• Support with warranty claims for panels, inverters and batteries
• Guidance on tariffs, export payments and future upgrades

This long term relationship ensure your solar PV system continues to perform as expected throughout its lifespan.

Solar Panel Maintenance: What Is Required After Installation?

One of the most common questions homeowners ask after installing solar panels is whether they need regular maintenance. The good news is that solar PV systems generally require relatively little routine maintenance because they have no moving parts in the panels themselves.

However, that does not mean your system should be ignored. Periodic checks can help identify faults, changes in performance and potential problems before they affect your electricity generation or savings.

Do Solar Panels Need Annual Servicing?

There is no single annual servicing requirement that applies to every domestic solar PV system. The appropriate inspection frequency depends on the equipment, the installation, the manufacturer’s recommendations and the condition of the system.

It is sensible to monitor performance throughout the year and arrange a professional inspection if you notice persistent problems. Your installer may also recommend periodic system checks based on the equipment installed and the circumstances of your property.

A professional inspection can include checking the inverter and battery, reviewing system performance, inspecting accessible electrical components and investigating any reported faults. Follow the manufacturer’s maintenance instructions and never attempt electrical inspections yourself.

Do Solar Panels Need Cleaning?

Rain will remove some surface dirt from solar panels, so routine cleaning is not always necessary. However, heavy soiling, bird droppings, leaves or other debris can sometimes reduce the amount of sunlight reaching the cells.

Check for visible build-up from a safe location. If cleaning appears necessary, consider a professional service rather than climbing onto the roof or using unsuitable cleaning products or equipment.

The benefits of cleaning depend on how dirty the panels are, their location and the cost of the work. Cleaning should not be treated as an automatic annual expense without considering whether it is actually needed.

What Should You Check Throughout the Year?

Although solar panels are designed to withstand UK weather conditions, seasonal changes can affect generation and may reveal issues that were not previously apparent.

• Spring: Review your monitoring data as daylight hours increase. Look for unexpected drops in generation and visible shading from growing trees or vegetation.
• Summer: Check that generation follows a broadly sensible pattern for the weather and daylight hours. Remember that exceptionally high panel temperatures can reduce efficiency slightly.
• Autumn: Look for shading or obstruction caused by falling leaves and check your monitoring system is still updating correctly.
• Winter: Expect lower generation because of shorter days, a lower sun angle and more frequent cloud cover. Persistent unexplained performance changes should still be investigated.

You do not need to inspect your roof yourself. Monitoring data and observations from ground level are useful starting points.

When Should You Contact Your Solar Installer?

Contact your installer or aftercare team if you notice persistent inverter error messages, an unexplained fall in generation, battery charging problems or signs of physical damage.

Before contacting them, make a note of any error codes, when the problem started and whether the monitoring app is still updating. This information can help the support team diagnose the issue more efficiently.

Never remove inverter covers, handle exposed wiring or attempt to repair electrical equipment. If you notice damaged equipment, exposed cables or another immediate electrical safety concern, keep clear and seek appropriate professional assistance.

Regular monitoring, appropriate maintenance and prompt attention to faults can help your solar PV system continue operating safely and efficiently over its working life.

Solar Panel Warranties and Certificates: What Should You Keep?

Your solar installation is a long-term investment, so understanding the paperwork and warranties supplied with your system is an important part of solar aftercare.

Different components have different warranty terms. Solar panels may have separate product and performance warranties, while inverters and batteries typically have their own manufacturer warranties. The length of cover, exclusions and claim procedures depend on the particular manufacturer and product.

What Is the Difference Between a Product Warranty and a Performance Warranty?

A product warranty generally covers specified defects in the panel’s materials or manufacture, subject to the manufacturer’s terms.

A performance warranty relates to the panel’s expected power output over a defined period. Solar panels naturally degrade gradually as they age, so a performance warranty sets out the manufacturer’s stated performance commitments and the conditions under which a claim may be made.

Your inverter and battery will have separate warranty terms, which may include requirements relating to installation, operating conditions, registration or maintenance.

Does Your Solar Installation Need an MCS Certificate?

Where an installation is completed under the MCS scheme, the relevant certification documentation should be provided in accordance with the applicable scheme requirements.

Keep your MCS certificate alongside your electrical installation documentation, commissioning records and manufacturer warranties. These documents can help demonstrate the details of your installation and may be requested when arranging an export tariff, dealing with a warranty issue or selling your property.

The exact documentation required will depend on your system and the relevant scheme or supplier requirements.

Who Should You Contact if Your Solar Panels Develop a Fault?

Your first point of contact will usually be your original installer or the designated aftercare provider. They can help establish whether the issue relates to the installation, an individual component or the wider system.

If a manufacturer warranty claim is necessary, the installer may be able to help you understand the process and identify the evidence required. Keep records of error messages, performance changes and any previous maintenance or repair work.

Before your installation is completed, make sure you know how to contact your installer and what support is available after the installation team has left.

Future Proofing Your Solar PV System

After installation, many homeowners choose to enhance their systems over time. Aftercare support helps assess options such as:

• Adding battery storage to an existing solar PV system
• Integrating EV charging or smart energy controls
• Adjusting system settings to suit changing household usage

Having an installer who understands your system history makes future upgrades far more straightforward.

Why Solar Aftercare Matters

Solar panels are a long term investment, often expected to perform for a minimum of 30 years, with most continuing to generate electricity efficiently for up to 40 years. Without proper aftercare, small issues can reduce efficiency, savings and system lifespan.

Professional solar aftercare gives homeowners additional benefits including consistent performance and predictable savings and ongoing system reliability. Our Aftercare Team at SolarTherm UK can help you resolve issues and fault find quicker and with minimal disruption to your generation and provide ongoing, expert advice as energy needs change.

Solar Aftercare with Confidence

For homeowners across Essex, Kent, Suffolk, Hertfordshire and the wider South East and East Anglia, solar aftercare provides reassurance that their system is supported well beyond installation day. From monitoring and maintenance to warranties and upgrades, aftercare ensures your solar PV system continues delivering clean, low cost electricity year after year.

If you are considering solar panels or want to understand the level of aftercare included with a professionally installed system, speak to SolarTherm UK for a clear, long term support you can rely on.

Contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice.

Your home. Your energy. Your future.

Frequently Asked Questions