They opted for the computer simulations to probe deeper into the indium/gallium combination to increase the efficiency of Copper indium gallium (di)selenide (CIGS) thin-film solar cells. Till now CIGS has shown only about 20% efficiency though theoretically they can attain the efficiency levels of 30%.

During the recent heat wave, electricity consumption has increased sharply: on 19th June, 37 million KWh was used, on 20th June, almost 40 million kWh, increasing by nearly 40% over the same period in 2009. According to EVN Hanoi, the sudden growth mainly gathered in daily life consumption. Meanwhile, in other provinces electricity consumption were deeply reduced - 30% over the same period in 2009 because every week, these provinces have electricity outage in 2-3 days.