Off-Grid 3 kW System
Battery included

Off-Grid 3 kW System

Off-grid
Single-phase

3 kW standalone solar kit for sites without grid connection. 6× Tensite 500W panels and Growatt SPF 3000W. Panels, off-grid inverter and compatible lithium battery — select storage capacity when you order. Supply plus certified installation.

4,950kWh/yrAnnual output
3.9yearsPayback
990per yearSavings

Ideal for a consumption of ~90–240 kWh/month.

Payback values the usable energy (~40%) against the cost of running a diesel generator, with ~4% average annual diesel price growth. Unusable surplus is lost — off-grid there’s no grid to export to.

Add-ons

Warranty

Panels· Tensite 500W TOPCon N-Type12 years · 85% efficiency for 25 years
Inverter· Growatt SPF 3000W5 years
Battery· Growatt HOPE 5kWh5 years or 6000 cycles
Installation work· Enera2 years

Your Solar Quote

System Type
Off-Grid
System power:3.0 kWp
Panels:6× 500W
PhaseSingle-phase
Inverter:Growatt SPF 3000W
Annual production:~4,950 kWh

Station2,914
Professional installation
INCLUDED
Paperwork
INCLUDED
In cart
Total4,124
Subtotal excl. VAT3,408 · VAT (21%)716

3 kW off-grid solar kit: production and autonomy

A 3 kW off-grid solar kit produces about 4,950 kWh of electricity a year — enough to power a home or finca with no mains connection. Supplied turnkey from €4,124, with panels, inverter, charge control and mounting sized to work as a standalone system.

With about 4,950 kWh a year, a 3 kW off-grid kit can run lighting, a fridge, pumps and everyday appliances without a grid connection. Pairing it with battery storage gives night-time and cloudy-day autonomy; the value here is independence from the mains and from a diesel generator, not a grid-bill saving.

The turnkey price has no hidden extras: it covers the solar panels, inverter, mounting structure and installation, the technical documentation, and the legalisation with the town hall and the electricity company — including the switch to a self-consumption contract. We hand it over working and registered, with no paperwork for you to chase.

A 3 kW kit suits a home using roughly 90–240 kWh per month. If your supply is three-phase, ask about the three-phase version; if your goal is full independence from the grid, look at the off-grid kits. The system can be expanded later with lithium battery storage.

About this product

3 kW off‑grid solar kit for country houses

The 3 kW off‑grid solar kit is intended for country houses, cabins and remote locations without access to the electricity grid. It is the ideal base to achieve energy autonomy in small rural homes.

It includes 6 panels rated at 500 W and a 3,000 W hybrid off‑grid inverter, which can power essential loads during the day and, with the right battery bank, also at night.

Why this system?

This kit suits monthly consumption in the range of 90 to 240 kWh for small homes used occasionally or permanently with a moderate load profile.

Every off-grid order includes at least one compatible lithium battery; you pick the capacity at checkout to match autonomy and usage.

It is a strong alternative to diesel generators, cutting fuel costs and noise while providing a stable solar‑based power supply.

Estimated production and savings

Estimated annual production for the 3 kW off‑grid kit is about 4,950 kWh, enough to cover basic needs in a small dwelling or holiday home.

Compared with running a diesel generator (fuel and maintenance) or paying for a long, costly grid connection, indicative savings are around €1,720–2,475 per year depending on usage, with a payback of roughly 1.6–2.3 years. Use the configurator for the exact figure for your consumption and battery.

Components included

The kit includes 6 Tensite 500W TOPCon N‑Type panels totalling 3 kW of peak power, with high efficiency and durability for rural environments.

The inverter is a Growatt SPF 3000W hybrid off‑grid unit that manages solar generation, battery charging and load supply and can be combined with a backup generator if required.

Battery capacity is selected on the product page (lithium matched to the inverter). The package includes mounting structure, wiring and basic protections.

Specifications

Specifications

Frequently Asked Questions

How much does a 3 kW solar kit cost installed?

From €4,124, turnkey — panels, inverter, mounting, installation and the legalisation and contract change are all included. You get a closed price up front, with no surprises on the day of installation.

How much electricity does a 3 kW system produce?

About 4,950 kWh per year in Spain, depending on roof orientation, tilt and shading. That is the figure used for the production and savings shown on this page.

Does the 3 kW off‑grid solar kit include batteries?

Yes. Off-grid kits always include at least one compatible lithium battery; you select the capacity on the product page to match autonomy and loads.

What can I power with a 3 kW standalone solar system?

You can cover lighting, an efficient fridge, small appliances and occasional power tools, as long as the battery bank and peak load are correctly dimensioned.

How much energy does a 3 kW off‑grid solar kit produce per year?

It produces roughly 4,950 kWh per year under average solar conditions.

Is a 3 kW off‑grid kit enough for a small cabin?

For a small cabin with moderate loads it is usually enough. If you plan to run many appliances at once or stay for long periods, the 6 kW off‑grid kit may be a better fit.

What kind of batteries are recommended for this kit?

For occasional use, deep‑cycle lead‑acid batteries can work; for frequent or daily use, lithium batteries are generally recommended due to their efficiency and lifespan.

Documents

Other ways to go solar with us

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Best if: you don’t know how many kW you need yet.

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Pick each component yourself: panels, inverter, battery, EV charger. Live price as you go.

Best if: off-grid, hybrid, or a specific brand in mind.

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