Solar system

A solar system is a technical system for using solar energy. It can generate either electricity (photovoltaics) or heat (solar thermal energy). In the context of BEO and modern energy systems, this usually refers to a photovoltaic system (PV system).

How it works

Solar modules — usually installed on rooftops or ground-mounted sites — convert sunlight into direct current. An inverter converts this into usable alternating current for self-consumption or grid feed-in.

Depending on the system design, the electricity can be:

• used directly on site
• temporarily stored (e.g. in a Battery Energy Storage System (BESS))
• sold (e.g. via a Power Purchase Agreement (PPA))

Typical applications

• Self-consumption solutions in commercial and industrial applications
• PV systems on industrial roofs, parking areas, or ground-mounted sites
• Combination with Battery Energy Storage Systems (BESS) to increase self-sufficiency
• Participation in electricity trading or tenant electricity models
• Integration into corporate energy or sustainability strategies

Key figures

• Capacity (kWp): maximum electricity generation under standard conditions
• Annual yield (kWh): electricity production depending on location and orientation
• Required area (m²): depending on module type, approx. 6–8 m² per kWp
• Self-consumption rate (%): share of PV electricity used locally
• Payback period: typically between 6 and 12 years, depending on the usage concept

Summary

Solar systems are a foundation of modern, sustainable electricity supply. They enable companies to reduce energy costs over the long term, become less dependent on the grid, and improve their CO₂ balance.

In combination with Battery Energy Storage Systems (BESS), they form a highly efficient and resilient energy system.