Advertising on the site, which will be introduced in several weeks, will be managed by BBC Worldwide's in-house ad sales team, headed by ad director of new media Colin Riddell.
Devised and developed by former Viz publisher Will Watt, the site is not a campaigning tool but instead aims to provide practical environmental advice.
Focusing on four key areas - finance, food, home and travel - BBCGreen will help users to prioritise energy-saving techniques.
Editorial features about issues such as recycling and carbon emissions will be complemented with instructional information, such as how to insulate buildings.
Watt, who approached the BBC with his idea at the end of 2006, said: "Many magazines and websites offer a lot of environmental information, but, as a publisher I thought someone should be making it easier.
"At the same time, the BBC had launched BigBritain research to find out what middle England believed in environmentally and ethically, which identified a lot of people who didn't know where to start."
BBCGreen.com, which goes live today (Tuesday) and carries the tagline "Think Big Start Small", will offer advice, tips and information on areas relevant to the consumer's selected priorities.
Each action will link to other areas of the site and, in the coming weeks, text information will be accompanied in some instances with video content.
A digital newsletter and blogging facility will soon become available, while discussion forums will be introduced later in the year.
Watt is working with BBC Worldwide online strategist Andrew Zincke, who ran the online marketing for Dennis Publishing's Monkey magazine. Provision of editorial content will be led by environmental expert and journalist Paul Allen.
Watt, who said BBC research had identified the internet as a key research tool for people seeking advice on green issues, added: "We want to avoid finger-wagging, but just help people understand the big issues."