ROI Calculator

System Size

The calculator estimates an appropriate solar system size based on your available roof space. For schools, we typically recommend utilizing suitable roof space to maximize energy generation while considering budget constraints and educational needs.

A typical commercial solar panel installation produces approximately 150 kWh per square meter annually in the UK.

Financial Returns

The financial benefits of solar panels for schools include:

• Reduced energy bills: Immediate savings on electricity costs
• Protection against rising energy prices: Hedge against future electricity rate increases
• Potential grant funding: Access to educational and sustainability grants
• Enhanced budget control: More predictable energy costs for long-term planning

Payback Period

The payback period is the time it takes for your energy savings to equal your initial investment. For school installations in the UK, typical payback periods range from 5-10 years, depending on:

• System size and efficiency
• Your current electricity rates
• Your energy consumption pattern
• Available grants and funding options

After the payback period, your solar system will continue to generate virtually free electricity for 20+ more years.

Educational Benefits

Beyond financial returns, solar panels provide significant educational value for your school:

• Real-world STEM learning: Live data for science and mathematics lessons
• Environmental education: Tangible example of renewable energy in action
• Energy literacy: Help students understand energy production and consumption
• Career inspiration: Introduce students to green technology careers

Environmental Impact

Solar panels significantly reduce your school's carbon footprint. The calculator estimates your CO2 reduction based on:

• The amount of grid electricity displaced by solar
• UK grid carbon intensity (approximately 0.233 kg CO2 per kWh)

These environmental benefits can enhance your school's sustainability credentials and provide practical examples of climate action for students.