☀️ 6 kW Solar with Battery and 40% Grant

Real example of an installed system with a 5 kWh battery, estimated ROI in just 4 years, 40% PNRR grant, and energy sharing via REC.

📍 Project Background

The installation refers to a detached house in a municipality with less than 50,000 inhabitants, eligible for a non-repayable grant. For privacy reasons, the address is not disclosed. The 6 kW system was designed to maximize self-consumption and energy sharing within a Renewable Energy Community (REC).

🎯 Project Goal

The goal was to ensure energy independence for the household, reduce electricity bills, and access all available incentives. Additionally, the project aims to generate economic benefits through the sharing of surplus energy, especially in the summer months.

📊 Consumption vs Solar Production

Seasonal Production Exceeds Consumption

In the summer period, the installed 6 kW solar system produces more energy than is consumed daily. This energy surplus is a concrete opportunity to join a Renewable Energy Community (REC), sharing clean electricity with other users on the same primary substation.

Energy Independence Even in Winter

During winter months, despite reduced solar radiation, the solar system still covers over 60% of energy needs. This is made possible by direct self-consumption and the storage provided by the 5 kWh battery.

Combined Economic and Environmental Benefits

In addition to savings on bills, energy sharing grants access to GSE incentives dedicated to RECs. This results in a dual benefit: lower energy costs and direct contributions for every kilowatt-hour shared.

🔋 Energy Independence with 5 kWh Battery

What Does a 5 kWh Battery Do?

A 5 kWh battery stores excess solar energy produced during the day for use in the evening or during peak demand. This means you can make the most of free solar energy.

More Self-Consumption, More Savings

Increasing self-consumption reduces reliance on the grid. As a result, annual savings increase and the payback period shortens. With a 5 kWh battery, you can self-consume over 75% of your solar production.

Protection from Future Price Hikes

With a battery, you’re less exposed to energy price fluctuations. In case of price increases, you can rely on your self-produced energy to keep costs stable. Additionally, if equipped with a backup system, the battery can supply power even during blackouts.

💰 Payback in 4 Years Thanks to 40% PNRR Grant

💸 Initial System Cost

The turnkey price for the complete solar system with a 5 kWh battery is €12,000, including installation, paperwork, and components.

🏛️ 40% Non-Repayable Grant

Thanks to the PNRR Fund, municipalities under 50,000 inhabitants can receive a 40% grant, equal to €4,800, significantly reducing the investment.

📉 Actual Investment

After subtracting the grant and adding costs for the CERESS application, the actual cost for the customer is about €8,550.

📈 Estimated Annual Benefit

Thanks to bill savings and REC incentives, the estimated annual benefit is around €1,790. This means the system pays for itself in under 4 years.

Official source: www.gse.it