May 08, 2024

Past, Present, and Future: The Evolution of Solar Energy Systems

In the eternal dance between humanity and the cosmos, few innovations have ignited as much hope and promise assolar energy systems. From their humble beginnings as novel experiments to their popularity and their future imagination, the history, evolution, and future status of solar energy systems are a testament to human ingenuity and the relentless pursuit of cleaner, greener solutions to our lives.

Origins of Solar Energy System

To truly appreciate the evolution of solar energy systems, we should trace back to the 15th century when humans utilized solar energy as a kind of power. The French Salomon de Caus invented the machine that pumped water by using solar energy to heat air, making it expand to do work. After this, there were few inventions about solar energy systems, most of which had little practical value and were for personal research by enthusiasts.

Despite these early insights, it wasn't until the 19thcentury that humanity began to unlock the true potential of solar energy through systematic experimentation and technological innovation. In 1839, French physicist Edmond Becquerel made a groundbreaking discovery when he observed the photovoltaic effect in certain materials, laying the foundation for the development of solar cells capable of converting sunlight into electricity.

PV Solar System: A Solar Energy System for Everyone

The story of PV solar energy systems is one of persistent innovation, marked by incremental advancements and breakthroughs that have propelled solar power into the mainstream.

Following Edmond Becquerel’s discovery, Charles Fritts' pioneering work with selenium-based solar cells in the late 19thcentury, researchers continued to explore new materials and techniques to improve the efficiency and reliability of photovoltaic panels. One of the most significant breakthroughs came in 1954 when scientists at Bell Laboratories in the United States developed the first practical silicon solar cell with an impressive efficiency of 6%, laying the foundation for the PV system's flourishing. Today, this efficiency can reach over 25% in the lab, which means that more electricity can be generated from the same amount of sunlight, leading to increased energy production and improved cost-effectiveness of solar power systems.

Apart from PV panels, the PV inverter is also the key component of this kind of solar energy system. The inception of PV inverters traces back to the early days of solar power generation when the focus was primarily on improving the efficiency of converting sunlight into electricity. In the nascent stages, inverters were simple devices tasked with the basic function of converting direct current (DC) generated by solar panels into alternating current (AC) suitable for use in homes and businesses.

As solar technology matured and the demand for renewable energy grew, so too did the sophistication of PV inverters. Innovations in DC-DC using, control algorithms like MPPT, module design, and more have led to the development of highly efficient and reliable inverters capable of maximizing energy harvest from solar arrays.

As a result, PV systems becomes a new solution to utilize the solar energy. It makes everyone embrace it because it can harness sunlight directly, simply generating electricity. Besides, its simplicity suits various applications, from residential rooftops to large-scale power plants, driving the transition towards cleaner energy worldwide.

The Solar Energy Storage System: An Upgrade for PV Inverter

While directly converting sunlight into electricity, there are still some limitations in the PV solar system itself. Their intermittent nature means energy generation is dependent on sunlight availability, resulting in fluctuations throughout the day and cessation during nighttime.

In contrast, solar energy storage systems work by capturing and storing energy generated by PV systems in the daylight. This stored energy can then be utilized during times of low sunlight, at night, and power failure, providing a reliable and continuous power supply.

Solar energy storage systems serve a complementary yet crucial role in further maximizing solar power better and bringing solar energy systems to the next level. That’s why more and more people would prefer to choose the solar energy storage system at the beginning. According to the US Energy Information Administration, 29.1 GW of grid-scale solar power and 9.4 GW of battery storage are projected to be placed in 2023[1]. In Germany, the installation of home solar batteries has grown between 2020 and 2023, increasing from about 272K to nearly 1.2M[2]. Its Compound Annual Growth Rate (CAGR) reaches remarkably, getting around 64% from 2020 to 2023.Such rapid expansion signifies a vital shift towards renewable energy integration and grid modernization initiatives worldwide.

The Future of Solar Energy System: What Lies Ahead?

As the solar energy storage system is prevailing on the market now, people have started to envision the future of solar energy systems. Generally speaking, it is marked by 3 significant trends: the dominance of lithium iron phosphate (LFP) batteries, the emergence of all-in-one energy storage solutions, and the integration of AI.

The Invention of the LFP Battery

LFP batteries are poised to dominate the realm of solar energy systems due to their numerous advantages. These batteries offer enhanced longevity compared to Lead-acid chemistries, making them ideal for stationary storage applications. Additionally, using LFP batteries in your solar energy system boasts higher thermal stability, lowering the chances of overheating or thermal runaway, which is crucial for safety in large-scale installations. Moreover, LFP batteries are more environmentally friendly as they contain no mercury, while Lead-acid batteries incorporate it as a necessary component in their design for enhanced conductivity.

Plus, according to the estimation, 80% of energy storage systems would utilize lithium-ion batteries, and 90% would be LFP batteries in 2030[4].

With ongoing advancements in properties and the proportion of types of lithium-ion in future energy storage systems, LFP batteries are further driving their widespread adoption in residential, commercial, and utility-scale energy storage projects.

All-in-One Energy Storage System

Nowadays, the split solar energy system is the mainstream type on the market. It often leads to complexities during installation due to compatibility issues between disparate products. This complexity extends beyond, as installers must also possess an in-depth understanding of how different components interact, potentially complicating troubleshooting and maintenance processes post-installation.

It created the idea of all-in-one solar energy systems and now is gaining momentum. These energy storage systems integrate multiple components, including batteries, inverters, power converters, energy management systems, and more, into a single, compact unit. It is a once-and-for-all solution, getting rid of your agony when installing and maintaining it.

As the demands for plug-and-play solar energy systems grow, driven by residential consumers’ and businesses' needs, all-in-one systems are poised to become the standard choice for ESS installations.


AI has immense potential for future applications in the energy industry. It could become an integral part of our daily lives, powering everything, including our electricity supply. In the coming years, AI is poised to empower VPPs (Virtual Power Plants) to analyze power efficiency. VPPs serve as management systems that aggregate and optimize power generation, distribution, and storage, with management and control at their core. They require adjustments across multiple segments and the analysis of vast amounts of data to ensure optimization. This is where AI steps in. AI algorithms can automatically analyze data, generate solutions for power allocations, and take action, thereby enhancing the power efficiency and accuracy of VPPs.

This AI-powered management system would also decentralize, leveraging market movements and renewable energy resources (such as solar energy), and increasingly rely on small generation units, particularly home solar systems. In the future, AI will gather data from VPPs to develop models that can detect fluctuations in power fees and notify individuals of real-time and future trends. Each person can participate in this dynamic market by selling electricity from their solar energy storage system when electricity prices are high and purchasing electricity when prices are low. AI has the potential to generate greater economic benefits for individuals while maximizing the utilization of free, renewable energy from solar energy systems, thereby helping people achieve sustainability and intelligence in the future.

Introducing Sigenergy’s SigenStor: The Future of Solar Energy Systems

Our Sigenergy’s Sigenstor is one of the perfect products in solar energy systems to let you experience the future of energy storage. This innovative all-in-one solar energy storage system redefines convenience and efficiency by integrating five essential components into one seamless solution: a solar inverter, an EV DC charger, a battery PCS, battery packs, and an energy management system (EMS).

The invention of an all-in-one energy storage system is to simplify the operation,  providing users with a smart and seamless experience. Whether you're looking to power your home, charge your electric vehicle, or store excess energy from renewable sources, we can have you covered. Plus, with its sleek front eagle eye and side ambient lighting design, our SigenStor blends into any scenario, adding a touch of elegance to your home or business. Here are more details about our SigenStor:


SigenStor stands out in the realm of energy storage solutions for its robust design and advanced features, engineered to deliver unmatched performance and reliability. At its core, SigenStor boasts 280 Ah large-capacity battery cells renowned for their exceptional longevity and sustained power output, ensuring uninterrupted energy supply even during extended periods of high demand. Complementing this formidable capacity is a 5-layer comprehensive battery safety protection mechanism, meticulously crafted to prioritize user safety and shield against potential risks, thereby instilling confidence and peace of mind. The versatility in our SigenStor is exemplified by its IP66 protection rating, which allows for installation in any environment, whether indoors or outdoors, without compromising performance or durability.


Our SigenStor can offer scalability with 1-6 5 kWh or 8kWh battery modules stackable, delivering a 5-48 kWh battery energy storage.

For your home, we often provide 5 kWh battery packs to keep your home normal when power failure comes. For your business, the 8 kWh battery packs are the best for you to face any power emergency. Additionally, with 20 parallel connections, your business can be fully powered by renewable energy, resulting in significant savings on energy bills.

EV-Home Energy Bridge

Our SigenStor's advanced technology enables V2X capability. With it, the EV-DC charging module serves as a two-way energy transfer system, enabling users to not only fast charge their vehicles but also power their homes during grid outages or peak demand periods, delivering a diverse powering solution for you.

AI Optimized

We follow the trends in the market and use AI assistance in our SigenStor via our mySigen App, a mobile energy storage system integrated with GPT-4 technology. Users can benefit from the assistance of Sigen AI, which serves as an energy analyst, device management assistant, and after-sale engineer. It can ensure optimal performance, efficiency, and convenience for users through intelligent automation and decision-making processes, utilizing every piece of solar energy and maximizing its benefits to cut your energy bills.

Besides, by operating the updating AI algorithms capabilities, our mySigen App automatically and continually analyzes real-time electricity pricing fluctuations and user consumption patterns, enabling dynamic habits that fit your needs.


The history, evolution, and future status of solar energy systems have traversed from the rudimentary solar energy system to the cutting-edge innovations of the modern era. Today, as we stand at the precipice of a greener future, the SigenStor manufactured bySigenergyrepresents progress and a future in the realm of solar energy systems. Let’s embrace sustainability and contribute to a brighter future for generations to come!

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