Battery Storage
Solar energy is abundant during the day, but the energy needs of a business or home do not stop when the sun goes down. At TopSolar, we offer comprehensive storage solutions with state-of-the-art batteries, allowing you to use your own free energy 24 hours a day.
Why is storage essential today?
Maximizing self-consumption
With the Net Billing system, the most profitable kWh is the one you never buy from the grid. The battery allows you to store surplus midday production and use it during peak electricity prices (e.g., 6:00 p.m. to 9:00 p.m.).
Energy Independence & Security (Backup)
Our systems offer backup capability. In the event of a power outage, the battery activates automatically, ensuring the operation of your critical loads (refrigerators, lighting, servers, security systems).
Peak Shaving
For businesses, batteries can be used to “smooth out” peaks in demand. By discharging the battery during peak hours of your production process, you reduce the power you demand from the grid, drastically reducing the corresponding regulated charges.
Our Technology
At TopSolar, we only choose certified Lithium Iron Phosphate (LiFePO4/LFP) systems, which offer:
• Long Life: Over 6,000 charge/discharge cycles (15-20 years of operation).
• Absolute Safety: The most stable lithium technology, non-flammable and resistant to extreme temperatures.
• Expandability (Modular Design): Start with the capacity you need today and add additional battery units in the future, depending on your needs.
Investment Incentives & Subsidies
As consultants with in-depth knowledge of the NSRF and the “Photovoltaics on the Shelf” or “Change Device for Businesses” programs, we guide you in choosing systems that meet the specifications for maximum subsidy. Adding storage often increases the subsidy rate and improves the rating of your investment portfolio.
Why TopSolar?
• Smart Energy Management: We install smart controllers that automatically decide when to charge and discharge the battery, based on energy market prices.
• Tailor-made Study: We do not offer ready-made packages. We calculate the capacity (kWh) based on your actual consumption profile.
• After-Sales Support: Remote monitoring of your batteries’ health through our control center.
Net Billing
Net Billing (Simultaneous Self-Consumption) is the next step in the energy transition. Unlike traditional Net Metering, where offsetting was done at the energy level (kWh), Net Billing introduces real-time monetary offsetting.
How does it work in practical terms?
The mechanism is based on two simultaneous processes:
• Self-consumption: The energy produced by the photovoltaic panels is consumed directly by the company’s electrical appliances or machinery. The consumer pays nothing for this energy (neither energy costs nor regulated charges).
• Surplus Export: Energy that is not consumed at the time of production is fed into the grid (HEDNO). The producer is compensated for this energy based on the Market Clearing Price (MCP) of the Energy Exchange.
The Financial Benefits for Your Business
For those of you looking for the best return on your investment, Net Billing offers:
• Immediate Liquidity: Surplus energy is converted into a credit balance on your electricity bill, drastically reducing the final amount payable.
• Protection from Instability: By reducing dependence on the grid during peak hours (daytime), the business is shielded from energy price fluctuations.
• Multi-year Contract: Compensation for energy fed into the grid is guaranteed through a contract with the Hellenic Electricity Market Operator (HEnEx), offering a stable investment horizon.
Virtual Net Billing: Solution for Remote Units
One of the most powerful applications is Virtual Net Billing. It allows a business or municipality to install a photovoltaic system in one location (e.g., a sunny plot of land) and offset the value of the energy produced against consumption in other locations (e.g., offices in the city center, hotels, or pumping stations).
The Importance of Storage (Batteries)
In Net Billing, adding a battery changes the ROI (Return on Investment) data:
• Increased Synchronization: You store energy at noon and consume it at night, avoiding the purchase of expensive electricity from the grid.
• Maximizing Benefits: Self-consumption is always more profitable than selling energy to the grid. The battery ensures that the largest percentage of your production remains “within the walls.”
Why is TopSolar your partner in Net Billing?
1. Specialized Study Software: We use advanced simulation tools to predict the degree of synchronization of your business, ensuring that the system is neither “too small” nor “too large.”
2. Subsidy Management: As consultants with experience in ESPA and the Development Law, we integrate the technical project into the appropriate financial framework for maximum subsidy.
3. High-End Equipment: We select inverters and panels that support smart energy management for automatic optimization of net billing.
