A battery turns the surplus you currently export to the grid into energy you use at night. We explain what capacity your real consumption needs, what each option costs installed, and how it is legalised in Andalusia. Free quote within 24 hours from your electricity bill.
Installed prices including VAT, hybrid inverter where the system needs one, RD 244/2019 legalisation included. Capacity is sized on your real night-time consumption.
Which storage size matches which night-time consumption.
| Capacity | Who it is for | Installed price |
|---|---|---|
| 5 kWh | Couple or small home, low night-time useEstimated payback 7 – 9 years | €3,200 – €3,900 |
| 10 kWh | Family with air conditioning or a poolEstimated payback 6 – 8 years | €5,500 – €7,200 |
| 15 kWh | Large home, electric car or heat pumpEstimated payback 6 – 8 years | €7,900 – €10,500 |
| 20 kWh | Villa with continuous climate control and full backupIncludes essential-circuits board | €10,500 – €14,000 |
| 32 kWh | Finca or off-grid home aiming at self-sufficiencyWith ATS and EPS output | €16,000 – €22,000 |
Indicative ranges including VAT and installation. The final price depends on whether the inverter must be replaced, the cable run to the consumer unit and how much backup you want covered.
Answer four short questions and see an indicative installed price right away. The final quote follows after a free technical check of your switchboard and inverter.
Going off grid with solar in Spain starts with the battery, so if you are asking how to go off grid with solar power on a finca, a cortijo or a rural plot without a grid connection, the storage capacity and the inverter decide everything. An off grid solar system replaces the grid instead of supplementing it: a hybrid inverter, 15–40 kWh of LFP storage, an automatic transfer switch (ATS) and an EPS backup output so the house keeps running when there is no grid at all. Our own reference project in Loja combines 28 Aiko 610 W panels, a 15 kW Deye hybrid inverter and 32 kWh of MTS storage with ATS and EPS. Off grid solar kits sold online rarely survive a Spanish summer with air conditioning and a pool pump, which is why we size on measured consumption and install with our own crew; prices, battery sizes and the full off grid vs on grid comparison are on our off-grid solar installation page. Solar batteries solve the basic mismatch of self-consumption: panels produce at midday while the home consumes in the morning and at night. Without storage, a typical household self-consumes 30–40% of what it generates and exports the rest to the grid, where it is compensated far below the price you pay to buy it back. With a correctly sized battery, self-consumption rises to 80–95%. The capacity you need depends on your night-time consumption, not on the size of your array: the practical rule is to cover what you use between sunset and sunrise. For a two-person household that is usually 5 kWh; for a family with air conditioning, a pool or an electric car, 10–15 kWh; for villas with permanent climate control, 15–20 kWh. Oversizing is the most expensive and most common mistake, because capacity that is never discharged never pays for itself. On price, we work with three ranges installed by our own technicians, always with a hybrid inverter where the system requires it. Pylontech offers the best value in conventional rack storage. Deye stands out where the system uses a hybrid inverter, because integration is native. Enphase is the choice for premium installations where safety and a long warranty come first. No solar panels and no way to install them, as in many apartments? Then you do not need an installed system but a plug-in battery: PowerHub ONE, our own brand, connects to a normal 230 V socket from €1,199 incl. VAT and works on punta/valle arbitrage. It is a different product, designed for apartments and smaller households, this page is about the installed systems. Every battery we install uses lithium iron phosphate (LFP), the chemistry that does not go into thermal runaway and that withstands thousands of full cycles. If you already have panels, in most cases storage can be added as an AC-coupled retrofit without replacing the existing inverter. Where the inverter is an older string model, swapping it for a hybrid often pays off because it also unlocks blackout backup, particularly valued in the rural inland areas of Málaga where grid failures are common. Installation is legalised under RD 244/2019 and we handle the amendment to your self-consumption file, the municipal IBI reduction and the IRPF energy-efficiency deduction. To size your system we only need your electricity bill with hourly detail and, if you already have solar, the production data from your monitoring.
Mi Techo Solar SL is based in Coín (Málaga) and works in Málaga and the surrounding area every week. Our own installers drive out from our own workshop, so service and warranty stay local.
Mi Techo Solar SL
Calle Arquímedes 86, Local 9
29100 Coín, Málaga
Monday to Friday 07:00 – 18:00 · closed Saturday and Sunday
Service area around Málaga
Málaga · Teatinos · El Limonar · Pedregalejo · Churriana · Campanillas · Rincón de la Victoria
Postcode 29001 · average drive time from Coín: under 30 minutes.
VAT B44974491 · Mi Techo Solar Energías Renovables S.L.
Beyond solar panels we install photovoltaic pergolas, aerothermal heat pumps and air conditioning. One team, one invoice and one company responsible for the maintenance.
Real installed prices, payback calculations and customer cases from the Costa del Sol.
Explore our complete solutions for solar energy, storage and home electrification.
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Tier-1 panels, professionally installed.
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Air Conditioning · Málaga
Mitsubishi A+++ aerothermal & split units.
INEA 2026 grant · Málaga
INEA 2026: 55% to 65%, applications from 22 October.
Pontio financing · Málaga
Spread the cost of your installation.
Mi Techo Care, maintenance · Málaga
Long-term monitoring & maintenance.
External links to official sources and partners. MiTechoSolar.com is a brand of Mi Techo Solar.
Home with fourteen existing panels exporting almost half its production to the grid. We added 10 kWh of AC-coupled storage without replacing the inverter. Self-consumption went from 38% to 86% and the average bill fell from €118 to €31 a month.
Inland home with frequent grid failures. We replaced the string inverter with a hybrid, installed 15 kWh of storage and an essential-circuits board: fridge, lights, WiFi, borehole pump and one air-conditioning line keep running for about twelve hours without the grid.
Finca with no grid connection: 28 Aiko 610 W panels, a 15 kW Deye hybrid inverter, 32 kWh of MTS storage, an automatic transfer switch (ATS) and an EPS backup output. The property runs generator-free year round except during long rainy spells.
Mi Techo Solar's own projects. Amounts are those actually invoiced, VAT included, and vary with roof, consumer unit and cable runs.
"Recomiendo encarecidamente Mi Techo Solar para la instalación de paneles solares y baterías. Son muy profesionales y fiables. Solicité una visita para inspeccionar la instalación y hacer recomendaciones, y Brandon vino al día siguiente. Esa misma tarde me envió el presupuesto. Analizó exactamente lo que se necesitaba y ofreció un precio muy competitivo. Poco después acordamos la instalación y el equipo llegó exactamente en la fecha prometida. La empresa tiene su sede en Coín, con taller y oficina propios, y cuenta con su propio equipo de instaladores, lo que transmite mucha confianza. El trabajo se completó satisfactoriamente y dentro del plazo acordado. Brandon es holandés y habla inglés y español con fluidez, por lo que la comunicación fue siempre muy sencilla."
trefor owen-jones
Google review · Hace 9 meses
"Excelente empresa! Te asesoran a la perfección, son profesionales, educados y buenas personas! Sin duda los recomiendo!"
Pablo Ariel Fontao
Google review · Hace un año
"Muy buena experiencia con Mi Techo Solar. Contacté con ellos para la instalación de dos baterías Deye adicionales en mi sistema fotovoltaico y el servicio ha sido rápido, eficiente y muy profesional. Quiero destacar especialmente el trabajo de Santi, el técnico que realizó la instalación. Además de dejar las nuevas baterías perfectamente instaladas y funcionando, dedicó bastante tiempo a explicarme diferentes aspectos de mi instalación y resolvió muchas dudas que tenía. Se nota que conoce muy bien este tipo de sistemas y agradecí especialmente que me explicara todo de forma clara y sin prisas. Aprovechando la visita, también revisó el problema que tengo actualmente con un magnetotérmico C40 de la instalación, que está saltando cuando la demanda de la vivienda es elevada. Hizo una valoración del cuadro y de la instalación y me explicó qué elementos cambiarían ellos y cómo plantearían la modificación para solucionar definitivamente el problema. Esta revisión no era el motivo principal de la visita, así que agradezco especialmente el tiempo y el interés que dedicaron a ello. En definitiva, muy satisfecho tanto con el servicio de Mi Techo Solar como con el trabajo de Santi. Instalación rápida, limpia y profesional, y sobre todo muy buen asesoramiento técnico. Totalmente recomendables."
Marcos Varela Lafuente
Google review · Hace una semana
"Mi Tech Solar personal llegó puntual y comenzó a trabajar de inmediato. Limpiaron los paneles solares según lo solicitado y ahora generamos más electricidad. Les pedimos que solucionaran un problema de conexión entre nuestro sistema y la aplicación móvil, y a pesar de las dificultades, el personal perseveró y logró que funcionara. Recomendamos ampliamente sus servicios.😁"
Lori saunders
Google review · Hace 1 mes
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Málaga
Prices, permits and legalisation explained for international home owners in Málaga province.
Go straight to prices, kits, batteries and maintenance for solar panels in Málaga and the Costa del Sol.
Direct links to our battery, self-consumption, off-grid, quote, town, pergola, climate and maintenance pages, using the exact term you searched for.
Six concepts that decide whether a battery pays for itself. Understanding them takes five minutes and prevents the most common buying mistakes.
A DC-coupled battery sits behind a hybrid inverter and is charged directly from the panels: one conversion less, about 2–4% more efficient. An AC-coupled battery has its own small inverter and connects to your switchboard, which makes it the standard retrofit solution for existing systems, no need to touch the current inverter.
All batteries we install are lithium iron phosphate (LFP). Unlike NMC lithium, LFP does not go into thermal runaway, tolerates full daily cycling and keeps working at Spanish summer temperatures. Expect 6,000+ full cycles: at one cycle a day that is more than 15 years of service.
A '10 kWh' battery rarely delivers 10 kWh. The depth of discharge (DoD) defines how much you can actually use: LFP batteries allow 90–95%, so a 10 kWh unit gives you about 9–9.5 kWh per night. We always size on usable capacity, not on the number on the box.
Capacity (kWh) says how long the battery lasts; power (kW) says what it can run at once. A 10 kWh battery with 5 kW output runs an air conditioner, the induction hob and the pool pump simultaneously, but not a second heavy load on top. We match the inverter power to your peak evening demand.
A standard battery switches off when the grid fails, that is a legal safety requirement. With a hybrid inverter with EPS output and an essential-circuits board, the fridge, lights, WiFi and a pump keep running for 8–24 hours depending on capacity. The switchover is automatic and takes milliseconds.
Manufacturers guarantee that the battery keeps at least 70% of its original capacity after 10 years or 6,000 cycles. In practice LFP degrades about 1–2% per year. All warranties are backed by Mi Techo Solar SL together with the manufacturer's Spanish office, so claims are handled locally.
The capacity that suits you depends on the municipality: an apartment in Málaga city does not consume like a villa with a pool in Marbella or a finca on a weak grid in the Guadalhorce valley. These are the capacities we typically install per area, with our own crew and legalisation included.
Málaga city is mostly apartments and collective self-consumption: storage is sized per home on night-time consumption, not on the shared roof.
Typical capacity: 5 – 10 kWh
Installed price: 3.500 – 7.900 € (incl. VAT and legalisation)
Solar panel batteries in MálagaMarbella is mostly villas with permanent climate control, a pool and an EV, so storage sits at the higher capacities and nearly always with a hybrid inverter.
Typical capacity: 10 – 20 kWh
Installed price: 5.500 – 14.000 € (incl. VAT and legalisation)
Solar panel batteries in MarbellaIn Estepona consumption peaks in the evening through air conditioning and the pool pump: exactly the profile where a 10–15 kWh battery pays back fastest.
Typical capacity: 10 – 15 kWh
Installed price: 5.500 – 11.000 € (incl. VAT and legalisation)
Solar panel batteries in EsteponaIn Fuengirola we mostly work on penthouses and communal roofs, where consumer-unit space decides: we choose compact rack formats.
Typical capacity: 5 – 10 kWh
Installed price: 3.500 – 7.900 € (incl. VAT and legalisation)
Solar panel batteries in FuengirolaIn Mijas most jobs are retrofits onto existing panels: AC-coupled storage added without touching the existing inverter.
Typical capacity: 10 kWh
Installed price: 5.500 – 7.900 € (incl. VAT and legalisation)
Solar panel batteries in MijasBenalmádena mixes old town, coast and hillside urbanisations; roof orientation varies a lot and with it the battery's charging curve.
Typical capacity: 5 – 15 kWh
Installed price: 3.500 – 11.000 € (incl. VAT and legalisation)
Solar panel batteries in BenalmádenaIn Coín and the Guadalhorce valley grid outages are fairly common, so most systems are built with a hybrid inverter and EPS backup.
Typical capacity: 10 – 20 kWh
Installed price: 5.500 – 14.000 € (incl. VAT and legalisation)
Solar panel batteries in CoínIn Alhaurín el Grande we install with an essential-circuits board: fridge, lights, WiFi and borehole pump keep running when the grid fails.
Typical capacity: 15 kWh
Installed price: 9.000 – 11.000 € (incl. VAT and legalisation)
Solar panel batteries in Alhaurín el GrandeTorre del Mar and the Axarquía are largely second homes: the battery is programmed for peak/off-peak arbitrage even when the house is empty.
Typical capacity: 5 – 10 kWh
Installed price: 3.500 – 7.900 € (incl. VAT and legalisation)
Solar panel batteries in Torre del MarIn Nerja many homes have little usable roof space: there storage delivers more saving than adding extra panels.
Typical capacity: 10 kWh
Installed price: 5.500 – 7.900 € (incl. VAT and legalisation)
Solar panel batteries in NerjaIn Torremolinos we work a lot with communities and small hotels, where storage is sized on the whole building's load curve.
Typical capacity: 10 – 20 kWh
Installed price: 5.500 – 14.000 € (incl. VAT and legalisation)
Solar panel batteries in TorremolinosAround Pizarra, Cártama and Álora there are many fincas with a weak grid or none at all: capacities go up and an automatic transfer switch (ATS) is fitted.
Typical capacity: 15 – 32 kWh
Installed price: 9.000 – 32.500 € (incl. VAT and legalisation)
Solar panel batteries in PizarraTypical capacity, installed price and lead time for each village in the Guadalhorce valley and the Sierra de las Nieves.
Everything you need before deciding on solar panels, batteries, a solar pergola or a maintenance plan in Málaga and the Costa del Sol.
Local installation teams, regional subsidies and yield data per municipality, choose your city for a tailored quote.
