Policy makers often debate the constraints and opportunities of renewable energy. Renewable electricity production, from sources such as wind power and solar power, is sometimes criticized for being variable or intermittent.

World energy resources are the estimated maximum capacity for energy production given all available resources on Earth. They can be divided by type into fossil fuel, nuclear fuel and renewable resources.

Tigo Energy is an American private corporation, headquartered in Los Gatos, California, United States. It provides products, technologies, software, and services to installers, distributors, and original equipment manufacturers within the photovoltaic industry.

The Apple Watch is a line of smartwatches developed and marketed by Apple. It has fitness tracking, health-oriented capabilities, and wireless telecommunication, integrating with watchOS and other Apple products and services.

Cheese spread is a soft spreadable cheese or processed cheese product. Various additional ingredients are sometimes used, such as multiple cheeses, fruits, vegetables and meats, and many types of cheese spreads exist.

Greggs plc is a British bakery and fast food chain. It specialises in 'on-the-go' savoury products such as baked goods, sausage rolls, sandwiches and sweet items including doughnuts and vanilla slices.

Energy in North Korea describes energy and electricity production, consumption and import in North Korea. Primary energy use in North Korea was 224 TWh and 9 TWh per million people in 2009.

The Vaillant Group is a company that develops products for heating, cooling and hot water. The company employs ~16,000 people worldwide and generates an annual turnover of approximately 3.2 billion euros.

Obsidian Energy Ltd. (previously known as Penn West Exploration Ltd., Penn West Petroleum and Penn West Energy Trust) is a mid-sized Canadian oil and natural gas production company based in Calgary, Alberta.

ThyssenKrupp AG (, German: [ˌtʏsn̩ˈkʁʊp]) is a German industrial engineering and steel production company. It resulted from the 1999 merger of Thyssen AG and Krupp and has its operational headquarters in Duisburg and Essen.