Advantages of installing solar batteries. Maximizes the use of solar energy.
Learn about the advantages of installing solar batteries in a photovoltaic system, and maximize the use of solar energy.
Renewable energy in Girona is transforming how homes, businesses, and communities produce and manage their energy. In this section, we analyze aerothermal energy, photovoltaic installations, energy communities, solar batteries, the profitability of solar farms, and technical sizing, with up-to-date information and a practical approach for Catalonia. Specialized content geared towards those seeking efficiency, savings, and regulatory compliance in energy projects.
Learn about the advantages of installing solar batteries in a photovoltaic system, and maximize the use of solar energy.
Discover how the size of solar panels affects their efficiency and performance. Learn how to choose the ideal size to maximize power generation and optimize your solar installation.
A comprehensive guide to boosting the uptake of heat pumps, optimizing energy efficiency and reducing consumption.
Aerothermal heating is ideal for complete and efficient air conditioning all year round, while air conditioning is perfect for occasional cooling or heating needs.
Installing aerothermal in a house already built is possible, but its installation requires certain adjustments. Everything you need to consider to do it right.
Everything you need to know about hot water aerothermal: the best, the worst and how to integrate it with your solar installation. Practical and straightforward information.
Combining a heat pump with solar panels can qualify for PRTR grants, income tax deductions and municipal tax reductions. Check amounts and requirements in our heat pump subsidy guide.
How much does aerothermal energy in Girona spend? We analyze real consumption in cold areas such as Olot and temperate areas such as the Costa Brava, with reference tables, comparison with gas and diesel, and tricks to reduce the bill, even with solar panels.
Brief explanation of what an energy community is and why Girona is becoming a reference in collective self-consumption.
Spain had 659 energy communities at the end of 2024, 44% more than the previous year. These are entities where neighbours, SMEs and local authorities produce and share renewable energy collectively, reducing electricity bills by 20% to 60%.
A REC (Renewable Energy Community) is a legal entity formed by citizens, SMEs and local authorities who join together to produce and consume 100% renewable energy collectively and locally. Its main goal is not profit, but energy savings and environmental benefit for the community.
The price of installing aerothermal energy in 2025 ranges from €8,000 to €20,000, depending on the size of the house and the type of emitters. The investment is amortized in 5-7 years thanks to energy savings of 40-70 % compared to gas or oil, and can be reduced to only 3-4 years if subsidies are applied.
Current equipment maintains an efficiency (COP) of 3-5 even at sub-zero temperatures, which allows savings of up to 70% compared to gas or oil boilers. To optimize it in winter, good insulation, buffer tanks and, in very cold areas, a combination with solar panels or hybrid systems are recommended.
Installing solar panels in a community of neighbors is a profitable investment: it reduces the electricity bill, takes advantage of subsidies and pays for itself in a few years.
Although many people use “heat pump” and “aerothermal” as if they were the same, they are not. We explain their differences, what types exist, how much they consume and how to choose the system that best suits your home.
Fan convector heating combines high efficiency and versatility to air-condition any space. We explain how it works, how much it costs and why it is one of the most sustainable solutions on the market.
The ideal inclination for solar panels in Girona is 38º and the optimal orientation is towards the south (180º). If this is not possible, orienting them to the southeast (135º) or southwest (225º) hardly reduces production (1-3% less per year).
The most common question is, “How many plates should I install?” It sounds easy, but it’s not answered by looking at your annual bills alone. It is not enough to know how much energy you use; what is decisive is when you use it. That’s why serious sizing is done by load curve (your hourly consumption). This is the only
The physical battery stores kWh in a computer and allows you to move energy to evening/night and cut power peaks (backup included). The virtual battery saves €: monetize your surplus on the bill without installing anything. The choice depends on your load curve, peaks and budget; in many cases, the hybrid strategy (physical + virtual) maximizes savings.
A legal photovoltaic installation in Spain must have direct current (DC) protection, such as gPV fuses, disconnectors, and surge protectors (SPDs), and alternating current (AC) protection, including circuit breakers, residual current devices (class A or B), and permanent overvoltage protection (VGA). The entire system must comply with the REBT (ITC-BT-40) and the UNE-HD 60364-7-712 standard to guarantee safety and allow for its legalization.
Last week we went to the Palamos Marina to review the photovoltaic installation with battery of the rowing boat of the OCEANCATS team (https://oceancats.org/).