Solar inverters and photovoltaic accessories in Madrid: installation and configuration
We select, supply, install, and configure photovoltaic inverters and all necessary accessories for self-consumption systems in Madrid and the Corredor del Henares. String inverters, microinverters, and hybrid inverters. 2-year installation warranty and 12-month repair warranty.
El inversor es el componente electrónico central de cualquier sistema fotovoltaico: convierte la corriente continua (DC) producida por los paneles a corriente alterna (AC, 230 V / 50 Hz) para su uso en la instalación doméstica o su volcado a la red de distribución. La correcta selección del inversor determina el rendimiento global del sistema, ya que las pérdidas por conversión (eficiencia típica del 97-99 % en modelos actuales) y la capacidad de gestión ante sombras parciales tienen un impacto directo en la producción anual.
The three main types are: the string inverter, the most common, connects all the panels in series or in several strings and converts the energy centrally; it is the most economical and reliable option, but a shadow on a single panel reduces the production of the entire string. The microinverters (e.g., Enphase IQ8) are installed on each panel individually, so partial shading or different orientations of various panels do not affect the rest; they are ideal for roofs with obstacles or multiple orientations, although their initial cost is higher. The hybrid inverter Integrates the grid inverter and battery charger into a single unit, simultaneously managing the panels, batteries, and the grid; it is the foundation of domestic energy storage systems (LFP lithium batteries like BYD Battery-Box or Pylontech).
The main accessories we install along with the inverter:
- DC optimisers (SolarEdge P370, Tigo TS4): they are installed on each panel to maximize individual output without the need for a microinverter; they are the intermediate solution between a pure string inverter and microinverters.
- DC and AC overvoltage protection (type 2 surge protectors in DC, residual current circuit breaker and MCB on the AC side): mandatory according to the REBT and the distributor company's regulations.
- WiFi production monitor: all current inverters (Fronius, SMA, Huawei, Growatt, Enphase) include WiFi or Ethernet communication to monitor real-time production from a mobile device and export historical data.
- Mounting structure: aluminium system with rails and clamps for pitched tile or fibre cement roof, coplanar structure for metal roof, or ballast system (weighted, without perforations) for flat walkable roof.
- Double insulated DC wiring (section 4-6 mm², class II, UV-resistant) and MC4 certified connectors to ensure electrical safety of the DC circuit.
- DC and AC isolator switches for safe maintenance of the system without the need to intervene in the main panel.
Frequently Asked Questions
What size inverter do I need for 6 panels of 400 Wp?
6 panels of 400 Wp add up to 2,400 Wp (2.4 kWp) of peak DC power. The usual practice is to select an inverter with a nominal AC power between 80% and 110% of the generator's DC power (DC/AC ratio). For 2.4 kWp, a single-phase inverter of 2.0-2.5 kW is appropriate. Common models: Fronius Primo 2.0-1, SMA Sunny Boy 2.5, Huawei SUN2000-2KTL. If you plan to expand to 8-10 panels in the future, opt directly for a 3.0-3.6 kW inverter to avoid having to change it.
Can I add batteries to my existing inverter?
Depende del modelo. Si tu inversor actual es un inversor de red estándar (string inverter sin gestión de baterías), no puede conectarse directamente a baterías: necesitarías sustituirlo por un inversor híbrido o añadir un inversor de baterías independiente (como el SMA Sunny Island o el Victron MultiPlus). Si el inversor ya es híbrido (p. ej., Huawei SUN2000-5KTL-M1, GoodWe ES, Solis S5-EH1P), admite la conexión de baterías de litio compatibles sin necesidad de cambiar el equipo. Revisamos tu instalación existente y te damos la solución más económica.
What is the difference between a hybrid inverter and a normal inverter?
Un inversor de red estándar convierte la energía DC de los paneles a AC y la vierte a la instalación o a la red; cuando no hay sol, el suministro viene íntegramente de la red. Un inversor híbrido incorpora además un cargador-descargador de baterías: cuando la producción solar supera el consumo, carga las baterías en lugar de verter el excedente a la red; cuando no hay sol o la producción es insuficiente, descarga las baterías antes de tirar de la red. Algunos modelos híbridos incluyen también función de backup (isla): mantienen suministro en los circuitos críticos durante cortes de red, siempre que las baterías estén cargadas.