Grupo Opaia SA is a holding company operating under Angolan law based in Luanda, Angola, running projects in civil construction services, solar energy technology, drinking water systems, hotel service and tourism, agriculture, finance and more. It was founded by the Angolan Agostinho Kapaia, from Huambo, in 2002.

Axpo Holding AG is a Swiss energy company headquartered in Baden, in the Canton of Aargau, and the parent company of the Axpo Group. Established in 2001 through the reorganisation of the former Nordostschweizerische Kraftwerke AG (NOK), it is wholly owned by the cantons of northeastern Switzerland and their cantonal…

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A solar cell, also known as a photovoltaic cell (PV cell), is an electronic device that converts the energy of light directly into electricity by using the photovoltaic effect. It is a type of photoelectric cell, a device whose electrical characteristics (such as current, voltage, or resistance) vary when it is…

Leadership in Energy and Environmental Design (LEED) is a green building certification program used worldwide. Developed by the non-profit U.S. Green Building Council (USGBC), it includes a set of rating systems for the design, construction, operation, and maintenance of green buildings, homes, and neighborhoods,…

Although Alberta has a presence in many industries such as agriculture, forestry, education, tourism, finance, and manufacturing, the politics and culture of the province have been closely tied to the production of fossil energy since the 1940s. Alberta—with an estimated 1.4 billion cubic metres of unconventional oil…

Bryan Guy Adams (born November 5, 1959) is a Canadian singer-songwriter, musician, record producer, and photographer. He is estimated to have sold between 75 million and more than 100 million records and singles worldwide, placing him among the best-selling music artists.

Nuclear power in the United Kingdom generated 16.1% of the country's electricity in 2020. As of December 2025, the UK has nine operational nuclear reactors at four locations (eight advanced gas-cooled reactors (AGR) and one pressurised water reactor (PWR)), producing 5.9 GWe.

The American multinational retail chain Walmart has received criticism from parties such as labor unions and small town advocates for its policies and business practices. Criticisms include charges of racial and gender discrimination, foreign product sourcing, anticompetitive practices, treatment of product…

In a report compiled by the government of Alaska, the real GDP of Alaska was $51.1 billion in 2011, $52.9 billion in 2012 and $51.5 billion in 2013. The drop-off that occurred between 2012 and 2013 has been attributed to the decline in the mining sector, specifically the oil and gas sectors, a consequence of declined…