Planning to install photovoltaic panels at home? Whether driven by energy independence, cost savings, or environmental benefits, this clean renewable source delivers substantial daily advantages. With a flood of models on the market and scam risks, selecting the right solution demands careful consideration. Our expert guide draws on proven industry practices to help you decide confidently.
Using your panels' output covers all or part of your household energy needs. They generate electricity whenever the sun shines, powering appliances seamlessly. Excess production can heat water, charge batteries, or feed into the grid.
The process is straightforward: Sunlight photons excite semiconductors in the panels, freeing electrons to create current. Wiring channels this direct current, and an inverter converts it to home-compatible alternating current.
For peak performance, aim for a south-facing roof at 30° incline, free from shade. This maximizes sunlight exposure, boosting efficiency and returns.
You have three main options for your panels' energy: full self-consumption, partial self-consumption, or full resale.
Total self-consumption keeps all production for your use, powering devices and storing surplus.
Partial self-consumption (or partial resale) uses what you need and sells excess to the grid. Bonuses since 2017 make it attractive—surplus fetches about 0.10 euro per kWh, better than pre-2016 free injections, though less than full resale rates.
Total resale sells everything to providers like EDF under a 20-year fixed tariff at roughly 0.20 euro per kWh. Financially strong historically, it's less compelling now as resale and retail prices converge.
Income is tax-exempt if under 3 kWp, connected at max two points, and non-professional. Otherwise, it's taxed as Industrial and Commercial Profits (BIC).
Prioritize these preliminaries:
Thin-film or amorphous silicon panels: Proven, affordable, and versatile for any orientation. Yields 6-9%, suited to niche applications.
Crystalline silicon panels: Top choice for value, with 25-year lifespans and 1% annual degradation.
Two-layer, organic, or hybrid panels: Emerging tech with low costs but modest yields.
Core elements include:
Photovoltaics see frequent scams, so vet professionals rigorously. A delicate install merits expertise.
Plan thoroughly, compare quotes, and prioritize RGE Quali PV-certified installers. They'll advise on materials, steps, and shading analysis (solar masks). Opt for technicians over salespeople.
Verify credentials: Approval number, company longevity, 10-year warranty. Call EDF at 3249 to confirm reputation.
A 3 kWp (30 m²) system runs 9,000-12,000 euros TTC, covering admin and hookup. No CIDD credit or zero-rate loans since 2014, but 10% VAT reduction possible, plus local aids.
Factor inverter replacement every 10 years (~1,500 euros) and liability insurance.
Break-even: 15-20 years. Self-consumption shines amid rising electricity prices. Optimal sites yield ~1,000 euros/year, minus ~60 euros annual grid fee—not riches, but reliable savings.
