Stripe won the six-figure account after a five way competitive pitch, which took place at the end of last year.
The agency’s remit will cover strategic media relations for ScottishPower across the company’s community investment, SME, sponsorship and CSR programmes.
It will also look after comms for its two independent charitable trusts ScottishPower Energy People Trust and the ScottishPower Green Energy Trust.
ScottishPower is one of the UK’s Big Six energy firms and part of the Iberdrola Group, which, with presence in 40 countries, is one of the world's top energy companies and the global leader in wind energy.
Vicki Steel, Joint MD at Stripe, said: ‘There is a real opportunity for us to take a more creative, innovative and integrated approach to the work of ScottishPower and we’re looking forward to working with the team there in order to make that happen.’