Solar Energy
Solar Energy | Solar Installation | Electrical | Athens
Bask in the abundant Attic sunlight with HEP’s tailor-made solar installation services, crafted specifically for homes and businesses across Athens. Our seasoned engineers handle every step—design, permitting, mounting, wiring, and grid connection—so you can seamlessly convert rooftop rays into clean, low-cost electricity. From Plaka rooftops to Glyfada villas, we leverage premium panels and smart inverters to maximize output even during sizzling summer peaks.
Switching to solar with HEP means stabilizing energy bills, boosting property value, and shrinking your carbon footprint, all while enjoying industry-leading warranties and 24/7 local support. Join thousands of Athenians who already power their lives with the sun, and let our team illuminate the path to a brighter, greener future.
FAQs
Is Athens’ climate good for solar energy production?
Yes. Athens enjoys more than 2,800 sunshine hours per year and an average annual solar irradiance of roughly 1,600 kWh/m². These figures place Attica among the sunniest regions in Europe, allowing a 1 kWp rooftop array to generate about 1,450–1,550 kWh of electricity annually—well above the EU-27 average. The high irradiation translates into excellent energy yields, shorter payback periods and reliable performance throughout the year.
What permits and approvals do I need for a residential solar installation in Athens?
For systems up to 10 kWp installed on a rooftop or façade, the process is streamlined: 1. Net-Metering Application submitted online to the Hellenic Distribution Network Operator (HEDNO/ΔΕΔΔΗΕ). 2. Simple Building Permit Exception (small-scale works notification) filed at the local Urban Planning Authority. 3. Electrical Installation Declaration (ΥΔΕ) signed by a licensed electrician/engineer after commissioning. Larger plants (above 10 kWp) or ground-mounted arrays require an environmental impact waiver, full building permit, and grid connection study. Your installer usually handles all paperwork on your behalf.
What financial incentives or subsidies are available in Greece for solar panels?
Homeowners can benefit from: • Net-Metering (Law 4414/2016 & Ministerial Decision ΔΑΠΕΗΛ/Γ/Φ1/οικ.175067): surplus electricity fed into the grid offsets consumption for up to 25 years, lowering your bill instead of selling power at a feed-in tariff. • ‘Photovoltaics on the Roof’ subsidy: a new scheme (2023-2024) offers up to 65% upfront grant plus a 700 € battery bonus for households with taxable income below set thresholds. • Reduced VAT (6% instead of 24%) when purchasing a complete photovoltaic kit with installation. • 40% tax deduction for energy-saving home upgrades under the “Exoikonomo-Autonomo” programme (subject to budget and eligibility). Commercial projects can also enjoy accelerated depreciation (100% in the first year) and favourable financing from the Recovery & Resilience Fund.
How much will a typical 5 kWp rooftop system cost and when will it pay for itself?
A turnkey 5 kWp installation in Athens, including mounting, inverter and paperwork, currently ranges from €6,000 to €7,200 (VAT included). With annual production around 7,500 kWh and an average residential electricity price of €0.18 /kWh (including taxes & grid fees), yearly savings are roughly €1,350. Even without subsidies, the simple payback period is 4.5 – 5.5 years; with the 40–65% grant, payback can drop to 2.5 – 3.5 years. Panels are warranted for 25–30 years, so lifetime returns exceed 15–18% IRR.
What does the installation process look like and how long does it take?
1. Site visit & shading analysis: 1–2 days. 2. Engineering design and permit submission: 1–3 weeks (dependent on HEDNO response time). 3. Equipment delivery & scaffold setup: 1–2 days. 4. Mounting structure, panel placement, cabling, inverter and AC/DC protections: 2–3 working days for a standard home. 5. Grid inspection & meter replacement by HEDNO: usually within 10 working days after installer’s completion notice. Overall, expect 4–8 weeks from contract signing to grid-tied operation. Our Athens-based team coordinates every step, minimising disruption and leaving your roof fully watertight.
What maintenance do solar panels require and how long will they last?
Photovoltaic modules have no moving parts and need very little upkeep. In Athens’ dry climate, an annual rinse with de-ionised water or a soft-bristle brush is usually sufficient to remove dust and pollen; steeper roofs may go two years between cleans. We provide: • Remote monitoring 24/7 via the inverter’s app • Yearly visual inspection & electrical testing (IV curve, insulation, earthing) • Rapid fault response within 48 h Manufacturers guarantee 25 years of at least 80–85% output and 12–15 years product warranty. Inverters carry 5–10-year warranties (extendable to 20). With proper maintenance, systems routinely operate for 30 years, delivering reliable green power for decades.