Photovoltaics and energy self-consumption

Photovoltaics and energy self-consumption

Harness the full potential of photovoltaics: Increase self-consumption of electricity

Photovoltaic installation is an investment that brings tangible financial and environmental benefits. However, in order to realize its full potential, attention must be paid to the issue of self-consumption of electricity.

Understanding the concept of self-consumption

Autoconsumption refers to the amount of electricity produced by a photovoltaic system that is consumed on an ongoing basis in a building or household. The higher the self-consumption, the greater the savings because you don’t have to buy electricity from an outside supplier.

In a typical household, the average self-consumption is only 25-30%. This means that the remaining 70-75% of the energy generated is transferred to the power grid. Although the net-billing system allows this excess to be accounted for, it involves losses of 20-30%.

Factors affecting self-consumption

Many factors play a role in determining the level of photovoltaic energy self-consumption. Here are the most important ones:

Installation size

The power of the photovoltaic system should be matched to the electricity demand of the building. If the installation is oversized, more power will be transferred to the grid, lowering autoconsumption.

Energy consumption profile

If most of the energy is consumed during the day, when solar panels produce the most power, autoconsumption will be higher. Conversely, if the greatest demand occurs in the evening or at night, autoconsumption will be lower.

Intelligent energy management systems

Solutions such as energy storage, smart inverters and load management systems can automatically adjust a building’s energy consumption to match the output from solar panels, increasing self-consumption.

Orientation of photovoltaic panels

South-facing panels produce more energy during the day. While east/west oriented panels generate more power in the morning and evening, which may better suit the energy consumption profile.

Weather conditions

The amount of energy produced by solar panels depends on insolation and weather conditions, which directly affects self-consumption.

Strategies for increasing self-consumption. Photovoltaics and energy self-consumption.

Here are effective ways to maximize photovoltaic energy consumption in your own building:

1. energy storage facilities

Installing energy storage, such as a lithium-ion battery, allows you to store excess energy produced by solar panels and use it during periods when the plant is not generating electricity. This is a key solution for increasing self-consumption.

2. energy consumption planning

Consciously scheduling energy-intensive appliances, such as a cleaning machine, dishwasher, air conditioner or oven, for the hours when solar panels produce the most energy can significantly increase self-consumption.

3. electric heating

By replacing traditional heating systems with electric heating, such as a heat pump or heating films, it is possible to use energy from photovoltaics to heat the building, increasing self-consumption.

4. domestic water heating

The installation of devices such as the Fronius Ohmpilot makes it possible to use surplus energy from photovoltaics to heat domestic water, which increases self-consumption and reduces heating costs.

5. electric vehicle charging

Having an electric car and a charging station allows the use of photovoltaic energy to charge the vehicle’s battery, which increases self-consumption and reduces the cost of operating the car.

6. east-west photovoltaic installations

Arranging solar panels in an east-west orientation can better match energy production with a household’s consumption profile, increasing self-consumption.

7. intelligent energy management systems

The implementation of load management systems that automatically adjust energy consumption according to production from photovoltaics can significantly increase autoconsumption without the need for manual control.

Benefits of increased self-consumption. Photovoltaics and energy self-consumption

Maximizing the autoconsumption of energy from photovoltaics has many benefits:

  1. Lower electricity bills due to less dependence on an external energy supplier.
  2. Higher profitability of investment in photovoltaic installation.
  3. Greater energy independence and resilience to power outages.
  4. Reduce carbon footprint and promote sustainability.

While there are many ways to increase photovoltaic energy self-consumption, each building and household has unique requirements. Therefore, it is advisable to consult with professional consultants who will help plan and implement optimal solutions tailored to your needs.

Maximizing the self-consumption of photovoltaic energy is the key to making this investment more profitable and achieving greater energy independence. With strategies such as energy storage, smart load management systems, electric heating and electric vehicle charging, you can significantly increase your energy consumption directly from solar panels, lowering your electricity bill and supporting sustainability.

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Lighthief is innovation, technology and science in the service of recycling photovoltaic panels and wind farms. The company's topics of interest touch on recovery and recycling in the broadest sense, mainly in the field of RES, or renewable energy sources.


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