National Microgrid Company

英國國家電網公司（National Grid plc）是一間總部位於之與瓦斯供應公司，其營業範圍為地區，及東北部，並於與上市。 [pdf]

Household solar DC power generation

Solar panels generate DC electricity through a process called the photovoltaic effect. When sunlight hits the solar cells in a panel, it causes electrons to be knocked loose from their atoms. [pdf]