Solar Photovoltaic Solutions for Public Facilities

Rendering of solar PV BIPV program for public facilities

Solar photovoltaic applications for public facilities, the use of solar photovoltaic power generation systems for public places to provide electricity solutions, can be applied to the government, schools, medical and other institutions, help to reduce carbon emissions from public facilities, and reduce the cost of electricity, but also to provide a stable source of electricity for the organization.

I. Program Objectives and Policy Background

1. Core Objectives

Installation of solar photovoltaic facilities in public places can realize the self-sufficiency rate of 30%-60% of electricity consumption in public facilities, significantly reduce the dependence on the supply of electricity, effectively improve the stability of electricity consumption, and can contribute to the reduction of carbon emissions by 150-800 tons per year.

2. Scope of application

Government agencies, educational institutions, medical institutions, cultural venues, transportation facilities and parks and green space and other public buildings, where the roof area available is more than 800 square meters and the average annual sunshine is more than 1200 hours.

3. Application needs

For government and educational institutions, in addition to installing solar photovoltaic panels on the surface of the building, but also need to try not to affect the aesthetics of the building, this time you can use the BIPV program, that is, to achieve photovoltaic power generation, but also to further enhance the aesthetics of the building.

Ⅱ.Construction cost and investment model

Project	Parameter description (2025 price system)
‌Component Cost	Monocrystalline silicon module $10/W, thin film module $7.0/W
‌Total System Cost	Total investment including energy storage 1$/W, about 1 million USD for 1MW project
‌Payback Period‌	Static payback period of 4-7 years after subsidy, IRR up to 12%-18

III. Standardized Implementation Process

1. Planning stage

When installing solar PV equipment on roofs such as government offices, educational institutions, medical institutions and cultural venues, load testing is required, requiring a structural bearing weight of more than 35kg/㎡ and a waterproof layer with a life span of ≥10 years.

For relevant energy audits, analyze the peak and valley hours of electricity consumption, match the energy storage capacity, and suggest configuring 20%-30% of the power generation capacity.

2. Construction stage

When installing solar PV-related modules, BIPV integrated design (such as PV curtain wall) or conventional racking can be used, so that PV power generation can be realized and the building appearance can be further beautified.

When doing the electrical configuration, for projects above 500kW, centralized inverters or string inverters are required, and the actual expansion can also be flexible.

IV. Risk Control Strategy

1. Technical Risks

Based on the attenuation of solar cell storage modules, we can use our recommended high-efficiency modules, which have less than 1% attenuation in the first year, and also have a 25-year warranty.

In the formal construction, we also need to pay attention to the installation and grid-connection safety, the implementation of three-level fall prevention system, and mandatory configuration of fire warning system.

2. Policy Risks

Different countries and regions have different photovoltaic governments, and there is no policy to subsidize the region, you can use the “self-generation and self-consumption of the main + residual power on-line” mode, to reduce the impact of subsidy degradation.

3. Operation risk

For regions with low annual sunlight irradiation, power generation insurance can be purchased to ensure that the revenue deviation is less than 10% under extreme weather.

V. Grid connection and revenue mode

1. Grid connection program

In low-voltage grid connection (380V), it can be applied to projects less than 500kW and connected to the original distribution system of the building.

In high-voltage grid connection (10kV), it can be applied to projects larger than 1MW, which need to build a new booster station.

2. Revenue Calculation

For places that consume more electricity and need stability, self-consumption tariffs can be chosen to save, such as hospitals and other places with high tariffs have higher returns.

For places that require less electricity, the excess electricity can be connected to the grid to gain revenue.

Ⅵ.Typical Case

Solar photovoltaic panels installed on the roof of a hospital in Hebei

Take a tertiary hospital project in Hebei, China as a case study

The hospital has a roof area of about 3,000 square meters, with an installed capacity of 750kW and 200kWh of energy storage.

The annual power generation is 820,000kWh, covering 40% of the hospital's electricity consumption, and 15% of the residual power is connected to the Internet.

The total investment is 4.5 million RMB, including government subsidies, the annual income is 1.63 million RMB, and the total payback period is 5.5 years.

VII. Operation and Maintenance Management Standards

1. Daily maintenance

Optional use of intelligent cleaning robot to remove dust once a month, with power generation loss rate less than 3%. Testing string IV curve every six months, fault location response time is less than 4 hours.

2. Digital monitoring

Conditional organizations can choose to deploy AI energy efficiency management platform to realize power generation prediction and equipment health assessment.

The above solar PV application scheme for public facilities integrates the requirements and economic calculations of relevant public facilities, which can provide a full-cycle implementation path for the construction of PV for public facilities, and the specific design needs to be optimized by combining with the measured data of the site, and any solar PV program issues related to public facilities can also be exchanged with us.