As clean energy expanded rapidly in 2023, the coexistence – and occasional conflict – between solar installations and wild birds became a global topic. That year saw a series of innovative solutions and heartwarming events that together charted a course toward harmonious coexistence.

On one hand, solar farms attracted large numbers of birds for nesting, which could lead to equipment damage, reduced efficiency, and even risks to the birds themselves. On the other hand, the migratory routes of birds must not be interrupted. In 2023, several major solar projects were paused or rerouted to protect migratory birds.

📉 Conflicts and Hidden Risks Between Solar Installations and Birds

In 2023, as global installed solar capacity surpassed 1 terawatt, the "nuisance" caused by birds escalated, presenting new challenges for the solar industry.

 Guano Contamination and the "Hot-Spot Effect" : Accumulated bird droppings can create hot spots that may permanently damage solar panels. According to a 2023 study, at unprotected solar farms, bird‑related efficiency losses averaged 4–7% per year, and in some cases reached as high as 30% .

 Physical Damage and Safety Hazards : Twigs, grass, and other debris that birds bring in when nesting under panels can clog drainage systems or create fire risks. Birds also frequently peck at fragile cables, potentially causing system faults or even short circuits.

Risks to Bird Survival : The glass surfaces of solar panels can cause bird collisions ("bird strikes"), and the warm, sheltered space beneath panels also poses dangers – for example, young birds may become trapped in equipment gaps and suffer injury or death.

Safeguarding Power Stations: Protection Technologies and Products in 2023

To resolve the conflict between solar power and birds, 2023 saw numerous innovative products and solutions emerge as highlights of solar operation and maintenance.

Physical Barriers and Solutions

BirdBlocker's "Anti‑Nesting Barrier" : BirdBlocker, a Dutch startup, unveiled an innovative anti‑nesting system at the Genera trade fair in Madrid, Spain. Made of high‑density polyethylene (HDPE), the system is cleverly installed along the edge of the gap between solar panels and the roof. Its barbed design effectively deters birds from entering, and it can be fitted without removing panels or using screws, making installation easy. The product attracted considerable attention at the exhibition.

Hebei Tengfei's "Professional Protection Mesh" : Hebei Tengfei Metal Mesh Co., Ltd. in China launched an advanced protection mesh for solar panels aimed at clean‑energy sites worldwide. The product is available in galvanised, stainless steel, and PVC‑coated versions, and for common tiled roofs it offers pre‑cut kits. It effectively solves problems caused by birds nesting under modules, such as shading, hot spots, and structural damage.

Non‑Physical Deterrent Technologies

In addition to physical barriers, some new technologies have tried to "politely" move birds along.

Ultrasonic Bird Repellent : In Lujiang, Anhui Province, a power supply company introduced a new type of device – an ultrasonic bird repeller. It emits ultrasonic waves at specific frequencies to guide birds away from power lines, achieving both grid safety and ecological protection.

Laser Bird Deterrent : Laser bird deterrent technology, already used in agriculture, was trialled in 2023 on large rooftop solar arrays. The technology disperses birds by means of automatically scanning laser beams, without harming the birds.

Making Way for Life: Heartwarming Stories from 2023

Beyond protecting station equipment, many actions in 2023 demonstrated care for life, including cases where economic benefits were sacrificed for ecological protection.

Case 1: Shangyu, Zhejiang – Making Way for Migratory Birds, a ¥90 Million Solar Project Cancelled

In early 2023, a solar project in Shangyu, Zhejiang Province, drew widespread attention. To protect a migratory bird habitat, the local government proactively abandoned a ¥90 million solar project. This decision vividly illustrated the principle that "economic development and ecological protection do not have to be mutually exclusive." The project leader's remark – "Solar power can wait, but birds cannot" – conveyed deep respect for nature.

Case 2: Lanshan, Hunan – A Warm "Film" Applied to Address Bird‑Strike Risk

In November 2023, the Sihaiping Protection Station in Lanshan County, Hunan Province, was questioned about possible bird‑strike risks. Authorities responded swiftly, installing a layer of anti‑bird‑strike sun mesh on the glass curtain wall and fitting dark‑coloured curtains inside. By reducing light reflection, they reduced the likelihood of bird collisions, protecting the birds that passed through the area.

Case 3: Heilongjiang and Overseas – Relocating a "National Treasure" – the Oriental Stork

In Heilongjiang Province, State Grid Harbin Company provided a "new home" for a pair of Oriental storks that had built a nest on a 30‑metre‑high power tower.

In Greece, the Hyperion 150 MW solar farm undertaken by China Machinery Engineering Corporation (CMEC) discovered a stork nest during construction. Work was immediately suspended, and a detailed bird‑relocation plan was drawn up. The project successfully established a new habitat for these rare birds.

Looking Ahead: A New Starting Point for Harmonious Coexistence

The various practices of 2023 all point to a future direction: solar farms should no longer be seen as the antithesis of ecology, but as part of nature itself.

From product to philosophy : Whether it is BirdBlocker's physical barriers, Hebei Tengfei's specialised mesh, or ultrasonic bird repellers combined with AI and infrared sensing, these technologies enable large‑scale deployment and signal that the solar protection industry is maturing and becoming more specialised.

Eco‑friendliness is key to the future : A 2023 report by the International Energy Agency (IEA) noted that solar energy had become the fastest‑growing source of electricity worldwide. As it expands rapidly, how to coexist harmoniously with nature will determine whether the solar industry can truly fulfil its green mission. A solar farm with "zero bird strikes and zero nesting problems" will be an important design consideration for the future.