Who would have imagined that teabags can be used for purposes other than those of packaging tea leaves, and filtering their flavors? No one else except South Africa’s Stellenbosch University scientists led by Eugene Cloete, who invented a kind of teabag which, instead of filtering tea impurities, purifies water at the lowest price and energy consumption possible.

According to statistics, currently, the number of small and medium enterprises (SMEs) of Da Nang accounts for about 90% of total enterprises. Annually, the energy consumption of Da Nang is about 800 million kWh, in which, commercial electricity for production is about 700 million kWh. Besides, in the production process, large amounts of FO and DO oil used are also increasing every year.

Founded in the 1990s, the production line, machinery and auxiliary equipments at Thang Long Plastic Joint Stock Company are not compatible, leading to inefficient energy consumption. In order to find solutions to the problem, Thang Long Plastic Joint Stock Company has conducted energy audit and applied various measures to reduce electricity costs as well as to improve power efficiency.

That is precise data calculated on actual energy consumption for lighting of Vietnam announced by Dr. Vu Minh Mao, Chairman of Vietnam lighting association at the seminar "Effective Lighting and Energy Conservation "held in Ha Long City, Quang Ninh.

With active involvement of many ministries, industries, localities, businesses during the period 2006 – 2010, the National Target Program on economical and efficient use of energy has achieved very commendable first results, saving a total of 3.2% of the national energy consumption amount (the target was to save from 3% to 5%). There are, however, many difficulties ahead to attain the target of saving from 5% to 8% in the next period 2011 – 2015.

In recent years, together with the growth of the entire economy, construction companies obtained an annual growth rate of 12-16 percent. Production was expanded and the use of energy as well as natural resources increased. Presently, energy consumption by the construction sector accounts for 20-24 percent of the total amount of energy consumption nationwide.

EVN Hanoi has discussed energy saving with its prime customers consuming more than 3 million kwh per year or having capacity of greater than 500kW. Thang Long, Quang Minh and Noi Bai industrial zones agree to EVN Hanoi not to exceed the amounts of consumption stated on electricity supply contracts, avoid overloads and cut from 5 to 10% of its energy consumption demand, equivalent to about 3302.43 to 6603.86 MWh.