How Long does solar last?

Solar energy systems, including solar photovoltaic (PV) and solar hot water systems, are a popular choice for homeowners seeking to reduce their carbon footprint and save on energy bills. However, one question that often arises is how long these systems last. In this article, we’ll explore the typical lifespan of solar PV and solar hot water systems, factors that impact their longevity, and what you can do to maximize their lifespan.


How long does solar power last for?

Solar PV systems are known for their durability and long-lasting performance. On average, a solar PV system can last between 25 and 30 years. However, it’s important to note that their efficiency will gradually decline over time, typically at a rate of about 0.5% to 1% per year. Despite this decline, solar PV systems can still produce significant energy output beyond the 25-year mark, making them a worthwhile investment for the long term.

How long does solar hot water last for?

Solar hot water systems, also known as solar thermal systems, have a slightly shorter lifespan compared to solar PV systems. Generally, a solar hot water system can last for 20 to 25 years. The system’s longevity depends on factors such as the quality of components, installation, and maintenance. Regular servicing and timely repairs can help prolong the life of a solar hot water system and maintain its efficiency.

Factors Affecting System Lifespan

Several factors can impact the lifespan of both solar PV and solar hot water systems, including:
– Quality of components: High-quality components tend to last longer and perform better over time.
– Installation: Proper installation by experienced professionals is crucial to ensure a system’s longevity.
– Maintenance: Regular maintenance, including cleaning and inspection, can help detect and fix issues early, prolonging the system’s lifespan.

How to Maximise your systems lifetime

To ensure your solar PV or solar hot water system lasts as long as possible, consider the following tips:
– Choose high-quality components from reputable manufacturers.
– Hire an experienced and certified installer to ensure proper installation.
– Schedule regular maintenance and inspections.
– Monitor system performance to detect any issues early.
– Keep panels clean and free from debris.




Investing in solar energy is a wise and forward-thinking decision for any business and home, offering both immediate and long-term financial and environmental rewards. The adaptability of solar solutions means they can be customized to meet the unique energy requirements of your business, wherever you are based. For a detailed analysis tailored to your specific needs, the EECA’s report is an invaluable resource. Ready to embark on the journey to a more sustainable, cost-effective energy future? Reach out to Sunshine Solar for a complimentary quote and expert guidance to transition your business to solar power seamlessly.

Get yourself a free quote here.

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