A measure of how efficiently a solar system converts sunlight into usable electricity. It’s the ratio of actual energy output to the system’s theoretical maximum output, as a percentage.
Return On Investment:
10.45%
The time it takes for a solar panel system’s energy savings to equal the initial installation cost. It’s calculated by dividing the total cost by annual savings from reduced energy bills.
Estimated Payback Period:
8.7 Years
The predicted amount of money a household or business saves on energy bills each month after installing a solar power system, based on energy production.
Estimated Monthly Bill Saving:
£134
The predicted amount of money a household or business saves on energy bills annually after installing a solar power system, based on energy production.
Estimated Annual Bill Saving:
£1,340
The total amount of money saved on energy bills over the entire lifespan of a solar system, accounting for installation costs and energy production.
Estimated Net Lifetime Bill Saving:
£29,731
System Overview:
The total capacity of a solar power system, measured in kilowatts (kW), which indicates how much electricity the system can produce under ideal conditions.
System Size:
10.36kW
How many photovoltaic modules (solar panels) were installed on this case study. PV modules are responsible for generating renewable energy from sunlight.
PV Modules:
28
Essential components in solar power systems that convert the direct current (DC) electricity produced by solar panels into alternating current (AC) electricity, for homes and businesses.
Inverters:
1 x 6kW
Devices that maximise the energy output of each solar panel by adjusting voltage and current, ensuring optimal performance even when some panels are shaded or underperforming.
Optimizers:
28
Batteries are used to store solar energy.
Batteries:
2 x 13.5kWh
Predicted Impact:
The total amount of electricity a solar power system generates in a year, typically measured in megawatt-hours (MWh), based on the system’s size and sunlight exposure.
Annual Energy Production:
9,149kWh
The total direct current (DC) capacity of a solar power system, measured in kilowatts (kW), based on the combined output of all the solar panels under ideal conditions.
Installed DC Power:
10.36kWp
The highest amount of alternating current (AC) electricity a solar power system has produced at any given time, typically measured in kilowatts (kW), after conversion from DC.
Max Achieved AC Power:
6kW
The amount of carbon dioxide (CO2) a solar power system prevents from being released into the atmosphere each year by replacing electricity generated from fossil fuels, measured in tons.
Annual CO2 Emissions Saved:
1.77t
The number of trees needed to absorb the same amount of CO2 emissions that a solar power system prevents each year, illustrating the environmental benefit in tree terms.
Our customer wanted to cut electricity bills while reducing their carbon footprint. They have continued to extend their system over the past few years.
Project Scope:
Design and installation of the original 10.36kW in-roof solar system with a 13.5 kWh Powerwall 2 battery.
Solution Implemented:
The customer then asked us to return to enhance the system further by adding another Powerwall 2, plus a Tesla Wall Connector (EV Charger).
Results Achieved:
Clean Energy Generation:
The installed solar PV system is projected to produce an estimated 9,149 kWh of clean energy annually.
Carbon Emissions Reduction:
The customer expects to cut carbon emissions by 1.77 tons annually from their solar panels alone. The carbon savings will be even greater once the batteries plus EV are considered.
Operational Efficiency:
By adding 2x 13.5kW batteries, plus an EV charger, the customer is utilising as much solar energy as they can, reducing their reliance on the grid, resulting in long-term cost and environmental savings.
