Xiamen builds 17 rooftop photovoltaic plants in six months

In summer, air conditioners and refrigerators become indispensable elements in life. While enjoying the cool, many people feel bad about the rapidly rotating meter, but at Li Yanquan’s home in Xiamen Tongan, this issue is no longer a problem from this year. Li Yanquan’s equipment for both large and small homes is almost inseparable from electricity: access to the gate is electronically controlled, flowerbeds are electrically controlled and even curtains are electronically controlled... Li Jia has 2 villas, and the monthly electricity bill is as high as 5000 Yu Yuan, but since the installation of photovoltaic panels on the roof of his home, Li Yanquan not only has to pay the electricity bill, but also sells the remaining electricity to the country each month.

The province's largest residents roof "power plant"

One month can save five or six thousand yuan in electricity bills in March. When the Xiamen Electric Power Bureau released the Top Ten Practices for Responsibilities in 2013, it revealed that the power sector will do a good job of generating electricity from solar energy, natural gas, wind energy and other clean energy sources this year. Residents installed their own power for their own use, there is surplus electricity can be sold to the national grid.

At noon on April 10th, the photovoltaic power generation project on the roof of Mr. Yang’s house near Zhongshan Park was formally incorporated into the trial operation of Xiamen Power Grid, the first personal photovoltaic power station officially incorporated into the grid in Fujian Province. On the morning of May 9, Xiamen Tong'an Li Yanquan's 15 kilowatt photovoltaic power station began to be integrated into the power grid. This is the second largest individual residential distributed photovoltaic power station in Xiamen, Fujian Province. This scale is distributed throughout the country. It is also rare.

Speaking of photovoltaic power generation, Li Yanquan is beaming. As the largest privately-owned distributed photovoltaic generator in Fujian Province at present, he has many plans for his own.

Last year, Li Yanquan set about renovating his own villa. He wanted to decorate his home as a "smart home," curtains, doors and windows must be automated, but "Smart Home" consumes too much power, so he learned from the "self-generating power." At first, Li Yanquan thought of solar energy and wind power. At the end of last year, the country introduced a "grid-connected policy" for distributed photovoltaic power generation. At the same time, China's photovoltaic industry was hit by the EU "double reverse" investigation, and the prices of photovoltaic modules have dropped significantly. In the end, Li Yanquan chose a photovoltaic power generation project and expanded his investment.

Today, Li Yanquan’s photovoltaic panels generate 70 to 80 kilowatt-hours of electricity per day. In more than 60 days since installation, they have generated more than 4,000 kilowatt-hours of electricity. "Invested more than 300,000 yuan, in seven or eight years to recover the cost." Li Yanquan said that his home use more than 50 kwh per day, the day can still sell nearly 30 kwh electricity sold to the country at night, no light can not be used to generate electricity Mains electricity. Such a home from the two villas monthly electricity costs 56,000 yuan to save.

Having tasted the sweetness of photovoltaic power generation, Li Yanquan now began to help individuals or companies involved in photovoltaic power generation. Some of his friends, after having seen the “scenery” of his house’s roof, became stunned and became his clients. In the future, Li Yanquan plans to rent roofs in factories, schools, and other places with large roofs. “Land rent and invest in photovoltaic power generation first, then transfer them to the roof owner or other people after the operation.” In his budget, these roofs were left unused for a long time. One square meter of rent for a year is only about 1 yuan. In addition, Li Yanquan also took a fancy to the parking lot, because the 1.6 square meter photovoltaic panel weighs about 15 kilograms. “Building a shed on the parking lot and then placing the photovoltaic panel will not only not affect parking but also shade and generate electricity.”

11 households build "power plants" on the rooftops of the community shopping malls also use solar power. According to the relevant personages of the Xiamen Electric Industry Department, distributed power projects built in residents' homes or their own housing sites, the power generation can be all online, all for personal use or for personal use. More than one Internet access will be selected by the residents themselves, and the lack of electricity will be provided by the grid. The electricity of the upper and lower nets is separately settled, and the electricity price executes the relevant national policies. In simple terms, after users install photovoltaic panels, they use solar power to generate electricity. All the power generated can be used for their own use. If there is surplus power, they will be sold to the power grid and sold to other consumers.

According to calculations, the average daily sunshine duration in Xiamen is 4 hours per day during the year. Taking 3 kilowatts of power generation as an example, it generates about 12 degrees of electricity a day (note: 1 kilowatt hour = 1 kilowatt hour). If an ordinary household uses electricity for 10 days a day, Degree, then basically meet their own needs. In July of this year, Xiamen will implement a new standard for ladder electricity prices. The first month's electricity consumption will be 0 kWh - 200 kWh, 0.4983 yuan per kWh; the second month's electricity consumption will be 201 kWh - 400 kWh per kWh. 0.5483 yuan; third-month electricity consumption of 401 kwh and above, 0.7983 yuan per kilowatt-hour. Before that, residents used clean energy to generate power and sold it to the national grid. One degree of electricity could sell about 1 yuan. However, it is understood that this data may change in the near future.

At present, there are 17 applications for photovoltaic power generation projects in Xiamen, 11 of which are scattered residents, with an average investment of nearly 55,000 yuan per household. According to Huang Shuning, the person in charge of smart electricity at the Xiamen Electric Power Bureau, the 11 households are the owners of the building or the villa. They use the spare space on their own roof to build photovoltaic panels. At present, these 11 households all adopt the “self-use, excess power-on-grid” model, which means that their own power generation will be given priority to their own homes. The electricity used will no longer need to pay the country’s electricity bills, and the remaining power generation will then be incorporated into the national grid and sold to the country.

Sanan Electronics, Taikoo Aircraft, Wuyuanwan No. 1 Residential Area and Yangtang Safe Housing Community also applied for photovoltaic grid-connected projects. Among them, Sanan Electronics, Taikoo Aircraft, and Wuyuanwan No. 1 Residential Area have been connected to the grid for transmission. Wuyuanwan No. 1 Residential Area is a pilot project for promotion in Xiamen City. It is applied for installation on the basis of the property. The roof of each building in the community has a large area of ​​solar panels, which can basically meet the needs of public lighting and other power needs of the community. At present, there is not much surplus power.

In June this year, Xiamen SM City Plaza also joined the ranks of photovoltaic power generation. "Now our own electricity supply can meet 10% of the daily electricity consumption in the mall." The project leader Zeng Yiping said that the project investment cost is over 13 million yuan, and after the state subsidizes 6.05 million yuan, the company's own investment is about 7 million yuan. It is estimated that 1.5 million kWh of electricity will be generated in a year and the cost can be recovered within 5 years.

The fact that the cost of electricity generated by households is not tens of thousands of yuan is not suitable for all households. Power generation is a matter for the country; now, residents and companies can generate electricity on their own. So, is investment in power generation cost-effective?

The relevant staff of the Xiamen Electric Power Bureau said that the 1 kilowatt power solar power crystal board needs 15-20 square meters, and the cost of such solar power crystal board is more than 10,000 yuan. Considering the economies of scale, it is generally faster to recover costs above the scale of 2.5 kilowatts. In other words, residents need to invest in tens of thousands of yuan or even hundreds of thousands of yuan for their own power generation. According to the scale of 2.5 kilowatts currently applied for in Xiamen, the input needs to be around 30,000 yuan, and the recovery cost should be more than 10 years.

People in the electrical industry frankly stated that if you want to obtain obvious benefits, the area of ​​solar panels must reach a certain size, and not all residents are suitable for installing solar panels on their own. This type of power generation model is more suitable for self-built and villa-type residential households. . As one staff member put it, “Solar panels should be installed in one household in an urban area, which is not realistic, because the installation on the balcony is too small and not worthwhile”.

The electric sector suggested that the residential community could apply for installation as a whole. If there is a residential community to apply as a whole, the developer or property company may be entrusted to the Xiamen Electric Power Bureau Business Office to apply, but this mode of promotion has certain difficulties, because if there is a household in the community do not agree, this plan will not be implemented. stand up.

â–  Links How to establish a personal power generation system According to regulations, citizens or organizations building distributed power generation projects must first apply to the electric power industry for grid connection. The power supply company shall issue an access plan confirmation form and an access opinion letter. After confirmation by the project owner, This choice of design and construction units is followed by construction. After the completion of the project, the power supply company shall pass the acceptance check, install the energy metering device, and sign the purchase and sale of electricity contract with the project owner or the power user and the grid-connection dispatching agreement. After commissioning, the power grid will be directly connected to the network. Where power generation equipment such as photovoltaics has been installed, the power grid directly installs related grid-connected equipment.

It is understood that on-grid networks are not complicated and are free to install and access the network. Simply connect the grid-connected controller and bidirectional meter to the existing home cable, and do not need to install another set of transmission lines. The controller and the bidirectional meter relate to the measurement of the electric power of the mouth and the measurement of the generation of electricity. How much electricity is sent to the grid, and how much electricity is used in the grid, it is not at all bad. As long as users who have previously installed distributed power supply can meet the grid connection conditions, they can apply to the power supply company at any time and sell surplus power to the power grid.