Mr Anderson previously worked as CEO of ScottishPower Renewables (SPR), and Chief Corporate Officer of ScottishPower.
In his new role, he will be responsible for all ScottishPower businesses, and for the leadership of ScottishPower internally and externally.
Speaking on his new role, Mr Anderson said: "Just last week Iberdrola announced a major global investment plan over the next 5 years, with more than €6 billion set to be invested in the UK. We will be delivering this investment in renewables, networks and customer service at a time when the political and regulatory environment in the UK is as challenging as it has ever been.
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"In the role of CEO I will be working hard to ensure that all of our business areas can continue to deliver for our customers, while our major investments help to develop a smarter and cleaner energy system for the UK."
Elsewhere, former Director of Policy & Innovation, Lindsay McQuade, has been appointed CEO of SPR in the UK. She will oversee an operational portfolio of more than 40 windfarm sites, generating over two gigawatts of renewable energy, as well as the development of new projects.
Ms McQuade said: "ScottishPower Renewables has led the way in the UK over the last twenty years in driving forward the growth of wind power. We have an experienced team of professionals managing one of the largest portfolios of green power in the country.
"Looking ahead, we face the challenges of renewing and extending the life of existing projects, at the same time as finding ways to deliver new megawatts of green electricity. Our expertise in the sector will help us continue to grow the business."
(LM)
