Huaneng International and Xi’an Thermal Research Institute have applied for a patent for a method and system for assessing rooftop photovoltaic (PV) resources using Geographic Information System (GIS) technology. The application, titled “A Method and System for Assessing Rooftop Photovoltaic Resources Based on GIS,” was filed on January 2025 and is identified by publication number CN120014447A.
The patent summary indicates that this invention pertains to the field of photovoltaic resource assessment technology. The method includes acquiring remote sensing images of rooftops in a designated area and constructing a remote sensing dataset through preprocessing. An improved Fully Convolutional Network (FCN) segmentation model is then applied to identify rooftops within this dataset. Following this, remote sensing images of rooftops in the area to be evaluated are analyzed using the rooftop identification model to produce segmented rooftop images.
From these segmented rooftop images, the usable rooftop area is calculated based on the proportion of available rooftop space. Additionally, solar radiation levels in the area are analyzed using GIS, leading to the calculation of irradiance on inclined surfaces and the maximum number of PV modules that can be installed. Finally, the assessment of rooftop PV resources provides an estimate of the potential electricity generation from the rooftops, facilitating accurate evaluations of rooftop PV resources that optimize investment decisions and offer comprehensive support for rooftop PV projects, thereby promoting sustainable development in the photovoltaic industry.
According to Tianyancha, Huaneng International Engineering Technology Co., Ltd. was established in 2021 and is based in Baoding. The company specializes in professional technical services and has a registered capital of 1 billion RMB. Tianyancha’s big data analysis reveals that the company has participated in 739 bidding projects and holds 60 patents, in addition to 13 administrative licenses.
On the other hand, Xi’an Thermal Research Institute Co., Ltd. was founded in 2001 and is located in Xi’an. This company primarily engages in research and experimental development, with a registered capital of 3 billion RMB. Analysis from Tianyancha indicates that the institute has invested in 21 companies, participated in 5000 bidding projects, and holds 36 trademark registrations and 5000 patents, alongside 39 administrative licenses.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/huaneng-international-and-xian-thermal-research-institute-apply-for-gis-based-patent-for-accurate-rooftop-solar-resource-assessment/
