Crain's Chicago Business (March 5) -- Greenlight Planet, a company co-founded by Chicagoan and Illinois alumnus T. Patrick Walsh, has a new way of providing affordable electricity to people in developing countries. Co-founder and fellow Illinois alumnus Anish Thakkar, the company's CEO, is based in Mumbai, India. Greenlight Planet has sold more than 3 million solar lighting appliances in more than 30 countries, including more than 1.5 million in 2014 alone.