The rise of electric vehicles (EVs) and the growing desire for energy independence make solar power a highly attractive option for working couples. A properly sized solar system can significantly reduce your reliance on the grid, offset the energy consumption of your EV, and create a more sustainable home.
But with all the options available, determining the ideal system size for your needs can be overwhelming. This guide will walk you through the key factors to consider when choosing a solar system for a working couple with an EV, helping you find the perfect balance between energy needs and budget.
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Understanding your energy consumption
The first step is to understand your current energy consumption. Here’s how:
- Review your electricity bills: Analyse past bills to determine your average monthly or yearly kWh (kilowatt-hour) usage.
- Consider future needs: Factor in potential changes in your lifestyle, such as working from home or adding another EV.
- Identify peak usage times: Knowing when you use the most electricity (e.g., mornings or evenings) helps determine battery storage needs.
Solar panels: The powerhouse of your system
The size of your solar panel system, measured in kilowatts (kW), directly impacts how much electricity you generate. Here’s a breakdown of factors to consider:
- Daily energy requirements: A 5kW system typically generates around 20kWh per day, which is sufficient for a couple with moderate usage. However, depending on your driving habits, add 2-3kW for EV charging.
- Roof space and orientation: North-facing roofs receive the most sunlight, maximising solar energy production. Measure your usable roof area to determine how many panels can fit.
- Panel efficiency: Higher-efficiency panels produce more electricity per square meter, allowing for a smaller system with a similar output.
Here’s a common solar system sizes for working couples with EVs in Australia:
- 3- 5kW system
This is a good starting point for couples with moderate electricity usage and a small EV with limited daily commutes. It might cover most of their daytime needs but require grid power in the evenings and during low sunlight.
- 6-8kW system
This solar system size caters to couples with slightly higher electricity consumption and a mid-range EV. It offers increased self-sufficiency and the ability to charge the EV during sunlight hours.
- 10kW+ system
This larger system is ideal for couples with high electricity consumption, a large EV battery, or aspirations for significant energy independence. It allows for charging the EV during the day and powering the home throughout the evening.
Choosing panels: Consider factors like brand reputation, warranty, and temperature coefficient (how heat affects efficiency). Opt for Tier 1 panels for better performance and longevity.
Read more about:
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- 8000 Watt Solar Panels | 8kW Solar Panel System
- 9000 Watt Solar Panels | 9kW Solar Panel System
- 10000 Watt Solar Panels | 10000kW Solar Panel System
- Solar Panel Sizes, Dimensions And Wattage
Solar batteries: Storing sunshine for later
Solar batteries store excess solar energy generated during the day for use at night or during peak grid pricing times. They are particularly beneficial for EV charging when you’re not home to harness sunlight. However, batteries add significantly to the upfront cost.
Battery capacity: Battery capacity is measured in kilowatt-hours (kWh). Aim for a capacity to meet your evening energy needs and some EV charging. A 10kWh battery can be a good starting point for a working couple with an EV.
Battery considerations: Battery degradation is inevitable, so consider a lifespan of 10-15 years when deciding.
Use our easy-to-use solar power and battery storage calculator to determine the size of your solar system with storage! Our solar calculator will generate performance information and potential savings.
We can send this information to 3 of our pre-vetted and trusted local installers in your area to receive obligation-free solar quotes.
EV chargers: Speeding up your charge
While you can technically charge your EV with a standard wall outlet (Level 1 charger), it’s slow. Consider a Level 2 EV charger for faster charging at home. Here’s what to keep in mind:
- Charger speed: Level 2 chargers typically range from 7kW to 22kW. Higher kW ratings offer faster charging but require a larger solar system.
- Smart EV chargers: These chargers optimise EV charging based on your real-time solar production and grid energy prices. This helps maximise your solar use and minimise grid dependence.
Choosing an EV charger: Consider your budget, desired charging speed, and compatibility with your car’s charging capabilities.
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Remember: These are just general recommendations. Consulting with a qualified solar installer is crucial for a personalised assessment based on your needs and roof space.
Additional considerations
- Financing options: Many solar companies offer financing plans, making the transition to solar more affordable.
- Future-proofing: Consider your future energy needs. If you plan to expand your family or add another EV, choose a system with some headroom for growth.
- Government incentives: Several Australian government programs offer rebates or financial incentives for installing solar panels and batteries. Explore these options to reduce your upfront costs.
Read more about:
- Home Solar Rebates, Incentives & Subsidies In Australia
- Solar power incentives, loans & rebates for small business
- Solar Battery System Rebates, Subsidies, & Incentives
- Australian Solar Feed in Tariffs Information
- Solar Feed-in Tariff Comparison: Best Tariffs by State and Territory
- Renewable Energy Certificates (RECs) information
- Large-Scale Generation Certificates (LGCs)
Getting quotes and choosing a solar installer
Once you understand your needs, obtain quotes from reputable solar installers. Look for companies with experience in residential solar systems, particularly those familiar with EV charging integration. Check their online reviews, licenses, and warranties.
Choosing the right solar system is a significant decision. Feel free to ask questions and get clarifications from potential installers. Remember, the ideal system should not only meet your current needs but also consider future growth in your energy consumption.
By following these steps and considering all the factors involved, you’ll be well on your way to selecting a solar system that empowers you to live a more sustainable and cost-effective life while powering your electric vehicle with clean energy.
Ready to go solar? Get an instant assessment
To find out how much a solar system with storage or even an EV charger will cost, try our easy-to-use solar power and battery storage calculator! It will generate performance data and possible cost savings.
We can forward your information to 3 trusted local installers in your area to obtain free, no-obligation solar quotes.
Find out how much you can expect to pay for solar
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*Prices quoted are to be used as a guide only and do not factor in state and other rebates and incentives. Includes STC discount.
