BUILDINGS, MAINTENANCE & REFURBISHMENT
or burdening their staff with specialised maintenance tasks.
Technology as an enabler
Advancements in solar technology, particularly solar inverters, are the key to addressing many of these challenges. Often referred to as the “brain” of a solar system, inverters serve two primary functions: they convert the direct current (DC) electricity generated by solar panels into alternating current (AC) electricity, which is used in homes and businesses, and they perform Maximum Power Point Tracking (MPPT), ensuring the system operates at its highest efficiency by optimising energy production.
Traditional string inverter systems connect solar panels in series, with energy production dependent on the performance of each panel in the string. A single shaded or underperforming panel can significantly reduce the entire system’s output. This is a common challenge for schools and on university campuses, where nearby trees or adjacent structures can cause shading. Additionally, traditional systems require panels to be aligned in identical strings, limiting flexibility in panel placement and making it harder to optimise space and energy production.
Due to these and other limitations, we are seeing a trend among educational facilities towards DC-optimised inverter solutions. In these systems, Power Optimizers are placed on each panel, allowing them to operate independently. This means that shading or underperformance of one panel only impacts that specific panel, improving overall system production. DC optimisation also addresses space constraints commonly found on school buildings. By offering flexibility in panel placement, orientation, and string lengths, DC-optimised systems maximise energy generation, even in tight or obstructed spaces.
Streamlining operation and maintenance The choice of inverter also has a significant impact on solar system operation and maintenance. Solar systems on educational facilities may include hundreds of panels. In traditional inverter systems, identifying the source of any underperformance can therefore be like searching for a needle in
a haystack. In contrast, systems equipped with Power Optimizers can pinpoint the exact location of a fault and automatically notify the responsible personnel where it is, enabling swift remedial action to be taken. This capability significantly enhances solar system uptime and is especially valuable for schools and universities where the maintenance team may not have specialised expertise in solar technology.
Other technology advances that can help schools and universities achieve a better return on their solar investment include battery energy storage systems. When paired with modern solar systems, battery storage enables excess energy to be stored for later use -such as powering evening school clubs or, for institutions that rent out their space, supporting activities on weekends. Additionally, stored energy can be used to power electric vehicles (EVs), including school buses or EVs owned by onsite personnel. This offers faculty and other staff a highly valuable benefit while further supporting sustainability goals.
Preparing for a successful solar installation When considering an investment in solar, the first step for any school or university is to partner with a reputable installer. A trusted installer will begin by assessing the suitability of school or campus buildings for solar energy, identifying potential issues like shading, and evaluating both current and future energy needs.
This process will also involve working closely with the school or university to define clear goals. For example, is the objective to install a large system for maximum electricity self-sufficiency? Or, due to budget or other constraints, is the plan to start with a smaller system and gradually expand over time?
It will also take into account any future planned developments. If the site is expected to undergo expansion or renovation, the solar system should be designed with flexibility to accommodate these changes. Additionally, if energy demand is expected to rise—such as with plans to adopt EVs—the system should be designed to handle these future needs as well.
Safety and cybersecurity first When installing a solar system, safety and security
must always be the top priority. Expert solar installers play a key role in selecting systems with built-in safety features that minimise risks. For example, SafeDC technology reduces voltage to safe, touchable levels, ensuring that maintenance teams or firefighters can work without the risk of electrical hazards. Arc fault detection and prevention systems are also crucial, as they detect high temperatures or faults and automatically shut down the system before more serious issues can arise.
Another important consideration is fire alarm integration. The addition of a Firefighter Gateway device connects the solar system to the building’s fire alarm, enabling a safe shutdown during emergencies and ensuring the protection of first responders.
As well as protecting both people and property, prioritising safety also has important financial implications. Many insurance companies now have specific standards for properties with solar systems to ensure proper coverage. It’s wise to consult your insurance provider before installation to understand their requirements. Failing to do so could lead to higher premiums being imposed upon the next renewal. It’s a sign of the times that safety concerns now extend beyond fire hazards to include cybersecurity; schools have become targets for hackers and online systems can provide an entry point into school networks. However, by choosing an inverter with integrated cybersecurity protocols, schools and universities can be sure of protecting sensitive data from cyber threats.
An invaluable investment Adopting solar energy in schools and universities is a powerful step toward creating a sustainable, cost-effective, and educationally enriching environment. Despite initial perceived challenges like upfront costs and maintenance considerations, the long-term benefits make solar power an invaluable investment for educational institutions. With the availability of a range of funding options, advanced technology, and a focus on safety and security, schools and universities can successfully navigate the transition to clean energy.
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www.education-today.co.uk
February 2025
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