Question 1

How much does it cost to install solar panels in Tenerife?

Accepted Answer

A typical residential system in Tenerife costs €1.50–€1.75 per watt installed. Around 20–30% more than equivalent mainland Spain projects, mainly because of shipping, import logistics and a smaller pool of installers. A small apartment system (2–3 kWp) usually runs €3,000–€5,000, an average family home (4–6 kWp) €6,000–€10,000, and a large villa with high consumption (8–10 kWp+) €12,000–€18,000 before any grants are applied.

Question 2

How long does it take for solar panels to pay for themselves in Tenerife?

Accepted Answer

Most residential installations in Tenerife pay back in 5–7 years, making it one of the fastest-payback provinces in Spain. That's thanks to over 2,800 hours of sunshine a year and electricity prices of €0.20–0.28/kWh (island grids are isolated and more expensive than the mainland). Available IRPF tax deductions and IBI reductions specifically for self-consumption installations can shorten payback further. Panels themselves are typically warrantied for 25 years, so most of that lifespan is pure savings after payback.

Question 3

How much can I save on my electricity bill with solar panels?

Accepted Answer

Typical savings are 60–80% of your electricity bill with panels alone, rising to 90%+ if you add battery storage so you can use your own stored energy in the evening instead of buying it back from the grid at night rates.

Question 4

Do solar panels still work on cloudy or hazy (calima) days?

Accepted Answer

Yes. Panels generate electricity from diffuse daylight, not just direct sun, so cloudy days typically reduce output by 20–40% rather than stopping generation. Tenerife's annual average sunshine is high enough that this has a limited effect on yearly savings, though Saharan dust events (calima) can temporarily reduce output further and are also a reason to factor in periodic panel cleaning.

Question 5

What's the best angle and direction for solar panels in Tenerife?

Accepted Answer

For fixed-mount systems, roughly 25° tilt facing south gives the best year-round yield in Tenerife's latitude. East/west-facing roofs still work well and are common on the island, just with a slightly flatter production curve across the day rather than a single midday peak.

Question 6

Do I need a battery, or is grid feed-in enough?

Accepted Answer

It depends on your usage pattern. Without a battery you're on 'compensación de excedentes' (surplus compensation): power you don't use during the day is exported to the grid and credited on your bill at roughly €0.04–0.10 per kWh. Power you use directly from your own panels is worth far more. Around €0.15–0.18 per kWh in avoided purchase cost. If a lot of your household consumption happens in the evening, a battery captures that difference and can push total savings above 90%. If you're mostly home and using appliances during the day, a battery may not be worth the extra cost yet.

Question 7

What is compensación de excedentes and how does it work?

Accepted Answer

It's Spain's simplified surplus-compensation scheme for self-consumption installations up to 100kW. Any solar power you generate but don't use yourself is exported to the grid, and your utility credits you for it on your monthly bill at a rate set by your contract. Typically €0.04–0.10 per kWh, well below the retail price you'd otherwise pay. It's not the same as a full feed-in tariff or 'selling back' at retail price.

Question 8

Can I go fully off-grid in Tenerife?

Accepted Answer

Technically yes, with enough battery capacity and sometimes a backup generator, but for most homes connected to the grid it's rarely the most cost-effective option. Grid-tied with self-consumption and surplus compensation gives better economics for the vast majority of properties. Off-grid tends to make more sense for remote fincas or rural plots without an existing or affordable grid connection.

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