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How to Choose Solar Panels for Your Home: Tips from ClimaEco

Solar panels are an investment for 25-30 years. To ensure the system pays off and delights you for decades, it's important to choose the right equipment. We share recommendations for residents of Alicante, Benidorm, and Gandía.

Important: Do not buy solar panels online from unverified sellers. Cheap panels often do not meet the stated specifications, have micro-cracks after delivery, and are not eligible for government subsidies.

1. Panel Type: Monocrystalline or Polycrystalline?

Monocrystalline panels — uniform dark color, "cut" corners. Efficiency 18-24%. More expensive, but more compact. Choose if you have limited roof space.

Polycrystalline panels — non-uniform blue color, square cells. Efficiency 15-18%. Cheaper, but take up more space. Choose if roof area allows.

2. What Does a Solar Power System Consist Of?

  • Solar panels: generate direct current (DC).
  • Inverter: converts DC to 220V AC for household appliances. This is the "heart" of the system.
  • Batteries: store energy for use at night. Optional, but very convenient.
  • Charge controller: protects batteries from overcharging.

3. Choose the System Type

Off-grid: not connected to the grid. All energy comes only from solar and batteries. For remote locations without grid access.

On-Grid: operates in parallel with the grid, no batteries. During the day — from solar, at night — from the grid. Excess can be sold back.

Hybrid: both grid-connected and with batteries. The most reliable solution — backup power in case of outages.

4. What to Look for in Specifications

  • Efficiency: the higher, the better. Critical for limited roof space.
  • Degradation rate: premium brands lose about 0.25% per year, budget brands — up to 0.5%. Over 20 years, the difference can be 5% in efficiency.
  • Temperature coefficient: shows how much power drops when heated. In Alicante's hot climate, this is important — the lower the coefficient, the better.
  • Warranty: look for at least 25 years warranty on performance and quality.

5. Manufacturer and Installer

Choose trusted brands with a proven track record. Work with local installers who provide warranties on both equipment and workmanship. A good installer will handle all subsidy paperwork themselves (in Spain, you can get up to 40% compensation).

ClimaEco is an official partner of leading manufacturers. We will help you select the optimal system for your budget and needs, and handle all necessary subsidies.