Expert experience in solar power for townhouses
(Baonghean) - According to Associate Professor, Dr. Le Anh Tuan - Deputy Director of the Institute of Climate Change Research, in current conditions, urban households need to use energy economically and efficiently and develop renewable energy.
Associate Professor Dr. Le Anh Tuan said that more than 2 years ago, his family installed a solar power system on the roof, using 12 German-made panels installed on an area of 24m2.2, cost 130 million VND (2016), capacity 3.9 kWp, saving electricity bill 1 - 1.5 million VND/month.
Solar panel usage time is 25 years, battery usage time is 10 years, payback period is 7 years.
According to Associate Professor Dr. Le Anh Tuan: If you deposit 130 million VND in the bank, with an interest rate of about 7.5%/year, considering an average inflation of 5.5%/year, the real interest is 2,600,000 VND/year.
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Meanwhile, the amount of money saved when installing solar power is about 14 million VND/year. "If using solar power for business, the profit will be higher. In particular, the profit for the environment is the biggest, so households, including urban areas, should invest more" - Associate Professor, Dr. Le Anh Tuan affirmed.
The benefits of investing in a rooftop solar power system are saving on electricity costs, excess electricity can be sold back to the electricity industry, reducing environmental pollution. In addition, the lifespan of a solar power system is up to 25 years; low operating and maintenance costs... To ensure safety when using, customers should choose a reputable supplier, minimize the purchase of panels of unknown origin; maintenance should be done at least once a year...
According to Decision No. 11/2017/QD-TTg of the Prime Minister dated April 11, 2017, rooftop solar power projects connected to the national grid are implemented according to the electricity compensation mechanism, using two-way meters. In a billing cycle, the amount of electricity generated from these projects is greater than the amount of electricity consumed and will be transferred to the next billing cycle. At the end of the year or when the power purchase contract ends, the excess electricity will be sold to the electricity buyer at the prescribed electricity price.
