Is Photovoltaic with Storage Worth It 2024?

Is Photovoltaic System with Storage Worth It or Not? It’s one of the Most Frequently Asked Questions in the world of Solar Energy. Our Answer? We Reveal it to you by analyzing data and bills to understand when Installing a Storage Battery on a Photovoltaic System is Worthwhile.

What is a Photovoltaic Storage System?

Photovoltaics uses sun’s energy to produce Electricity. A portion of the energy consumed during daytime production hours is defined as self-consumption but, often, daily commitments do not allow it to be used. Storage Batteries solve the problem by storing all energy produced and not consumed directly to be used in the evening hours.

If you have arrived here it is because you too are wondering whether a Photovoltaic System with Storage is Worth It or Not. Continue reading and, through data and bills from a real case study of one of our customers, discover why Photovoltaic with Storage is convenient.

When is it Best to Install Photovoltaic System with Storage?

One of the Cornerstones of our company is that every customer is different. When we help customer decide whether to Install Storage Batteries on an existing or new Photovoltaic System, it is important to start with right data. That is Energy consumption of home, Energy needs of the family unit, and solar production.

The analysis of this data indicates tailor-made solution for the customer. Let’s take the example of Mario who installed 2.94 kW Photovoltaic System in Ostia area and find out why he can increase his savings, already confirmed by his bills, thanks to Storage Batteries.

General Data of Photovoltaic System

  • System Power: 2,943 kWp
  • Annual Plant Production: 4,153 kWh
  • Power Available on the Bill: 4.95 kW
  • Annual Energy Request Before Photovoltaic System: 4092 kWh/year
  • Annual Energy Demand Post Photovoltaic System: 3170 kWh/year

Thanks to Photovoltaic System, Mario has reduced his energy demand by 23%. Assuming an Energy Price of €0.284/kWh we can calculate an annual bill saving of €261.85.

0.284€ x (4092-3170) kWh/year = 261.85€

By analyzing the bills before and after the installation of the photovoltaic system we have confirmation of the lower energy demand. This is despite customer increasing his consumption by 500 kWh one year after Photovoltaic System became fully operational. Costs for electricity in bill also show a significant decrease.

Comparison Between two bills confirms that Mario’s System works but by better analyzing  remaining data we see How Storage Batteries can help him save more.

General Data of Photovoltaic System
General Data of Photovoltaic System

Self-Consumption Energy, used directly by Mario during the hours of Solar Energy Production, is approximately 35% of total. Remaining energy is fed directly into national electricity grid. Thanks to Exchange on Spot he receives a payment from the GSE of 0.12* €/KWh which corresponds to an annual contribution of €325.92.

€0.12 x 2716 kWh/year = €325.92

It is clear that, between 0.12 cents paid by GSE and 0.28 cents saved every kWh thanks to direct consumption, Mario needs to increase his share of self-consumption. A piece of data in second bill helps us to better understand why Installing Photovoltaic System with storage is convenient for Mario.

The bill data tells us that consumption is concentrated in the F3 nighttime band when standard system does not produce energy. By integrating Lithium Battery pack into Photovoltaic System, Mario can conserve energy that he now puts into grid and use it when he needs it most. Thanks to batteries, self-consumption can increase by up to 80%, with further savings on Bills.

Conclusions: Is It Worth Installing Photovoltaic System with Storage?

Self-consumption and analyzed data confirm that it is convenient for Mario to integrate Storage Batteries into his system. Personalized consultancy and in-depth Study of Energy needs are path to right and Tailor-Made solution for each customer.