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2026-03-16

FAQs

Photovoltaic cells are made of semiconductor materials, primarily silicon. When sunlight shines on the cells, photons excite electrons to escape their atomic orbits, generating direct current (DC). This DC current is then converted into alternating current (AC) used in our homes via an inverter.

2. Monocrystalline Silicon vs. Polycrystalline Silicon: Which to Choose in 2026?

Monocrystalline Silicon: Darker in color (near black), higher efficiency (typically exceeding 22%), better performance in low light, and currently the mainstream choice in the market.

Polycrystalline Silicon: Bluish in color, lower cost, but slightly better in high-temperature performance.

3. How Much Do Shading and Dust Affect Power Generation?

Very Significant. Even a small patch of shade (such as tree branches or chimneys) blocking one cell can cause a significant drop in power for the entire module or even the entire cell string. Optimizer or micro-inverter technology in 2026 can effectively mitigate this "weakest link" effect.

4. Is My Roof Suitable for Solar PV?

Orientation: In the Northern Hemisphere, due south is best; southeast or southwest are next best.

Angle: The ideal tilt angle is usually equal to the local latitude to ensure maximum solar radiation throughout the year.

Shading: Ensure no shading during the critical power generation period from 9 AM to 3 PM.

This depends on local electricity pricing policies. If the local feed-in tariff is low, or there are frequent power outages, installing an energy storage system (such as lithium batteries) can significantly improve the self-consumption rate of electricity, using the electricity stored during the day at night.

6. How long can a photovoltaic system last?

Most high-quality photovoltaic modules have a linear power guarantee of 25-30 years. It is usually promised that after 25 years, the power generation efficiency will still be no less than 80%-85% of the initial value.

7. Do solar panels need frequent cleaning?

If there is a lot of rainfall in the area, rainwater can usually act as a self-cleaning agent. However, in areas with high winds or bird populations, dust and bird droppings can create a "hot spot effect," which can seriously damage the modules. It is recommended to inspect the system every six months, and wipe it with clean water in the early morning or evening (when the module temperature is lower).

8. Should the power be cut off during thunderstorms?

Modern photovoltaic systems are equipped with comprehensive lightning protection grounding systems and surge protectors. Normally, manual power disconnection is not necessary. However, in the event of extreme thunderstorms, for safety reasons, it is advisable to temporarily disconnect the AC side switch.

China and the United States dominate global photovoltaic industry investment, accounting for nearly 50%!

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Company News
2026-03-16

According to a recent research report released by the International Photovoltaic Power Consortium (ISA), China and the United States have consistently attracted the most photovoltaic (PV) investment in recent years. Since 2015, the PV industries of these two countries have collectively received approximately 50% of the total investment.

In 2022, global PV industry investment reached $308 billion, a significant increase of 36% compared to 2021. However, according to a research report released recently at the ISA’s sixth industry conference in New Delhi, India, PV system investment accounted for only 11.5% of total energy investment ($2.6 trillion) in 2022.

The report points out that the vast majority of global PV industry investment is concentrated in several developed countries in the Asia-Pacific region, followed by Europe and North America. In 2022, the Asia-Pacific region, Europe, and North America accounted for 55% and 33% of global investment in developing PV projects, respectively. In these regions, these investments are primarily driven by economies with mature PV markets, such as China, the United States, Japan, Spain, Australia, the Netherlands, South Korea, Brazil, Vietnam, Germany, and India.

China and the United States attract the largest amounts of photovoltaic (PV) investment annually, accounting for approximately 50% of all PV investment since 2015. Only a small fraction of global PV investment is concentrated in emerging and developing economies such as the Middle East and Africa, Latin America and the Caribbean. Consequently, these regions lag behind in market competition for PV system installations.

The report emphasizes that prioritizing developing and underdeveloped countries and regions with significant untapped PV power generation potential is crucial to accelerating global PV investment.

In 2022, investment in PV system installations accounted for nearly 90% of total investment across the entire PV value chain. In terms of market segmentation, utility-scale PV systems accounted for the largest share of total PV industry investment at 43%, followed by residential PV systems at 39%, and commercial and industrial (C&I) PV systems at 18%.

Private financing is the primary contributor to PV investment, accounting for over 80% of total investment from 2015 to 2022. The remaining PV investment during this period came from the public sector.

The report argues that more funding needs to be mobilized from the public sector to ensure a equitable and inclusive energy transition, as most private financing has flowed to developed economies.