What to look for when buying solar panels
When purchasing solar panels, it’s essential to evaluate several key factors to ensure you select a system that meets your energy needs, budget, and long-term expectations. Below are the critical considerations:
1. Assess Your Energy Requirements
Begin by analysing your household’s energy consumption. Review past electricity bills to determine your average monthly and annual usage. This assessment will help you estimate the number of solar panels needed to offset your energy consumption effectively.
2. Evaluate Roof Suitability
The condition, size, and orientation of your roof significantly impact the efficiency of a solar panel system. Key aspects to consider include:
Structural Integrity: Ensure your roof is in good condition and doesn’t require repairs before installation.
Orientation and Tilt: South-facing roofs with a slope between 15 and 40 degrees typically yield the best results although it is not an issue in regions like Kenya.
Shading: Minimise shading from trees or nearby structures, as it can reduce system performance.
3. Understand Solar Panel Efficiency
Solar panel efficiency indicates how effectively a panel converts sunlight into electricity. Higher efficiency panels produce more power in a given area, which is beneficial if you have limited roof space. Efficiency rates for residential panels generally range from 15% to 21%.
4. Review Warranties and Certifications
A comprehensive warranty reflects the manufacturer’s confidence in their product and offers protection for your investment. Look for:
Product Warranty: Covers defects in materials or workmanship, typically ranging from 10 to 25 years.
Performance Warranty: Guarantees a certain level of energy production over time, ensuring the panels don’t degrade beyond a specified rate.
Additionally, verify that the panels have certifications from recognised testing organisations, indicating compliance with industry standards.
5. Compare Costs
The cost of solar panels varies based on factors such as brand, efficiency, and installation complexities. To manage expenses:
Obtain Multiple Quotes: Comparing offers from different installers can help you find the best deal.
6. Choose a Reputable Installer
The quality of the installation affects the system’s performance and longevity. When selecting an installer:
Check Credentials: Ensure they are licensed and have relevant certifications.
Read Reviews: Look for customer feedback and ask for references to gauge their reliability and quality of work.
Understand the Contract: Review the terms carefully, including warranties, payment schedules, and project timelines.
7. Consider Future Energy Needs
Anticipate any changes that might increase your energy consumption, such as purchasing an electric vehicle or adding new appliances. Opting for a system that can accommodate future expansions can be more cost-effective in the long run.
By thoroughly evaluating these factors, you can make an informed decision and invest in a solar panel system that aligns with your energy needs and financial considerations.
Related Read: Mistakes to Avoid When Choosing Solar Companies
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