Solar park for businesses — from rooftop to megawatt scale

What can be installed for a business?

We install rooftop systems, ground-mounted plants, battery storage, charging solutions and hybrid inverters — all from one place, compatible with each other.

Rooftop solar

The roof of a production building, warehouse or commercial premises becomes an electricity-producing asset — roof warranty preserved.

from €9,840 + VATRead more

Ground-mounted solar

When you have more land than roof — scales up to a megawatt, including for selling to the grid.

from €10,940 + VATRead more

Battery storage

Deye BOS-A for a production building — cuts consumption peaks and raises self-consumption without increasing the connection.

on requestRead more

EV chargers

VOOL chargers for employee and customer car parks, with load sharing and OCPP support.

from €1,500 + VATRead more

Hybrid inverters

Deye three-phase inverters 5–25 kW, series up to 50 kW for larger sites.

Read more

How much does a solar park for a business cost?

A 15 kW rooftop system costs €9,840 + VAT and a 15 kW ground-mounted system €10,940 + VAT, both including installation. This is the starting point for a smaller self-consumption system — the price of larger parks is project-based.

Prices exclude VAT and a battery. The price of larger parks is affected most by capacity, distance to the connection point and site preparation. We inspect the site and give a transparent quote with no later extras.

Rooftop or ground-mounted — which suits a business?

Rooftop suits self-consumption when the roof of the production building or warehouse is free. Ground-mounted suits you if you want higher capacity or plan to sell part of the production to the grid.

Read more about rooftop solutions or building a ground-mounted plant — if you are unsure which suits you, we come to inspect the site.

Zero export and selling to the grid

A company solar park has three basic configurations: sell the surplus to the grid, limit sales to the grid to zero, or stay off-grid.

Zero export means the plant is connected to the grid but set up so that it does not sell to the grid — the system continuously measures consumption and reduces the inverter output as soon as production exceeds consumption — or limits inverter power to match what is being consumed on site. It is needed when the grid operator limits feed-in or when the connection agreement does not allow production to be fed into the grid. Zero export works best together with battery storage or when daytime consumption is high — otherwise part of the production goes unused.

An asymmetric hybrid inverter helps set up zero export more precisely, because it directs power to the phase where consumption currently is — read more about asymmetric output.

Battery storage for industry and covering consumption peaks

Starting production equipment creates short consumption peaks for which the connection capacity would otherwise have to be increased. A Deye BOS-A battery system covers these peaks on site.

Besides peak shaving, the battery also raises self-consumption: the midday production surplus goes into the battery, not cheaply to the grid, and covers the evening or morning consumption peak. You will find all models, dimensions and technical data on the battery storage page.

Charging solutions for employees and customers

As electric car use grows, charging is becoming more and more important for businesses, housing associations and public places too.

Where does a charging point usually fit?

• company and office car parks
• housing associations and new developments
• hotels, restaurants and service locations
• shopping centres and public car parks

We help you choose the right charger according to how it will be used and what your electrical grid allows — VOOL chargers support the OCPP 1.6 and 2.0.1 protocols and automatic load sharing between several charging points. The charger is connected to the same system and uses the company's own solar energy first.

How does installing a company solar park work?

A smaller 15 kW system is completed in one working day. Larger projects take longer, but the process is the same five steps.

1. We inspect the siteWe assess the suitability of the production building roof or plot, the connection capacity and the consumption profile.
2. We calculate paybackWe give the payback calculation before the decision, not after — self-consumption, zero export or selling to the grid.
3. We prepare a quoteCapacity, production forecast and price — transparent, with no later extras.
4. We design and sort out permitsWe deal with Elektrilevi and, where needed, the local municipality on the company's behalf.
5. We install and hand overMounts, panels, inverter, cabling, monitoring and measurement protocol according to standards.

Payback calculation before you decide

We give the payback calculation before you decide, not after — taking into account the company's actual consumption profile, connection capacity and the chosen setup (self-consumption, zero export or selling to the grid).

The typical payback period for a smaller self-consumption system is 6–7 years without a battery and subsidies, and panels last over 25 years. The payback of a larger, project-based park depends on how much of the production goes to self-consumption — the more energy is used on site, the faster the investment pays off, because on self-consumed electricity you avoid paying the electricity price as well as the grid fee and the renewable energy charge.

Self-consumption can be raised with battery storage, EV chargers and by scheduling larger loads for the daytime.

Why should a business invest in a solar park?

Does a business need a permit?

A smaller rooftop system usually only needs an agreement with Elektrilevi on the connection. A larger ground-mounted plant mostly needs a municipal procedure.

We clarify the need for permits already at the site visit and sort out all the documents for the company — read more on the rooftop and ground-mounted pages. Planning the system for a home rather than a business? See solutions for homes.

Frequently asked questions about a company solar park