Selfio

Selfio is a German online-only retailer that sells solar PV kits, battery-storage systems, heat pumps, smart-home energy management hardware and the mounting accessories needed for residential self-consumption projects. Complete plug-and-play sets range from ±€1,500 for a 1 kW balcony unit to ±€15,000 for a 10 kW roof array with 10 kWh battery; most offers sit in the mid-price band, 20-30 % below installer quotations because the kits are pre-engineered and sold without installation labour. The company’s core promise is “do-it-yourself, but not alone”: every kit is pre-sized with matching inverters, cables and mounting rails, shipped on one pallet, and backed by telephone/video planning support, cloud-based design software and a commissioning hotline. Selfio’s best-known lines are the “Balkonkraftwerk” (600–800 W micro-inverter balcony set) and the “Komplett-Solar” 5 kW hybrid package that includes a 5 kWh lithium-iron-phosphate battery and energy-manager gateway, both of which regularly top Amazon.de and Idealo.de solar rankings. Typical buyers are owner-occupant homeowners and technically-minded tenants aged 30-55 who want to cut electricity bills, reduce CO₂ and avoid lengthy installer waits; they value transparency, German-language support and the ability to expand the system modularly. The brand speaks to a frugal, engineering-friendly lifestyle that favours self-reliance, data monitoring and payback periods under eight years. Selfio competes with both conventional solar installers and generalist DIY hardware e-tailers that also list solar components. It differentiates by bundling certified components into code-compliant kits, offering real-time technical support during installation, and providing a single German warranty handler—removing the finger-pointing common when inverter, panel and battery brands differ.