20kW Commercial Solar System
What is a 20kW Commercial Solar System?
A 20kW commercial solar system is designed for small to medium-sized businesses, commercial buildings, and industrial operations. This system provides a substantial amount of energy that can significantly reduce electricity bills and contribute to a company’s sustainability goals. With the ability to generate enough power to support multiple operations, it’s an ideal solution for companies looking to decrease their reliance on the grid and offset operational costs with renewable energy.
How Many Solar Panels Does a 20kW Commercial Solar System Have?
The number of panels required for a 20kW system depends on the wattage of each panel. Common panel sizes range between 440W to 500W. Here’s a breakdown of the approximate number of panels needed:
| Panel Capacity | Number of Panels |
|---|---|
| 440W | 45 panels |
| 475W | 42 panels |
| 500W | 39 panels |
This variation is due to improvements in solar panel technology, where higher wattage panels allow for fewer units to produce the same energy outpu
How Much Electricity Does a 20kW Commercial Solar System Produce?
A 20kW system can generate around 75 to 90 kWh per day, depending on the location, panel orientation, and weather conditions. The annual production is roughly 27,000 to 33,000 kWh, which is suitable for small to medium-sized businesses with moderate electricity usage.
Here’s an estimate of daily electricity generation in various Australian cities:
| City | Average Daily Output (kWh) |
|---|---|
| Sydney | 80-85 kWh |
| Brisbane | 85-90 kWh |
| Melbourne | 75-80 kWh |
| Perth | 85-90 kWh |
These figures vary due to differences in sunlight hours and weather conditions.
What are the NSW Rebates for the 20kW Commercial Solar System?
In New South Wales, businesses can benefit from various government incentives, including:
Small-scale Technology Certificates (STCs): Under the federal government’s Small-scale Renewable Energy Scheme (SRES), businesses can receive financial incentives in the form of STCs. The amount depends on the size of the system and the geographical location.
Feed-in Tariffs (FiTs): NSW businesses can sell excess solar power back to the grid, earning additional revenue and reducing payback times. Tariffs vary by energy retailer
How Long Will it Take for the System to Pay for Itself?
The payback period typically ranges from 3 to 5 years. This timeframe can vary based on electricity consumption, feed-in tariffs, and whether government rebates are applied. Businesses can save between AUD 5,000 to AUD 8,000 annually on electricity bills, which speeds up the payback period.
What is the Cost of a 20kW Commercial Solar System?
The price of a 20kW solar system can range between AUD 15,000 to AUD 30,000, depending on factors such as panel quality, installation complexity, and additional components like inverters.
| Component | Estimated Cost |
|---|---|
| Solar Panels | AUD 10,000 – 15,000 |
| Inverter | AUD 2,500 – 5,000 |
| Installation Costs | AUD 2,500 – 5,000 |
Inverter and System Performance
For a 20kW system, it is recommended to use a 20kW inverter or multiple smaller inverters to manage the load. Inverters convert the Direct Current (DC) produced by the panels into Alternating Current (AC) used by businesses. It’s essential to choose an inverter that is compliant with Australian grid regulations and can handle potential overclocking if additional panels are added in the future
Considerations for Battery Storage
Adding a battery to a 20kW system can greatly enhance energy independence, allowing businesses to store excess power for use during peak hours or power outages.
- Recommended Battery Size: For a 20kW system, a battery with at least 20-30 kWh capacity is recommended
What Are the Cost Implications of Adding a Battery?
The cost of adding battery storage can range from AUD 10,000 to AUD 20,000, depending on the battery’s capacity and type. Over time, however, this investment can be recovered through increased self-consumption and reduced reliance on grid electricity
What Warranties Are Included with a 20kW Commercial System?
Most 20kW Commercial System come with robust warranties, including:
Panel Warranty
Typically 10-25 years for performance guarantees.
Inverter Warranty
Generally 5-10 years.
Workmanship Warranty
Installers often provide a 5-10 year warranty on installation work
Ready to Install a 20kW Commercial Solar System?
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