By Susanna Twidale LONDON, May 26 (Reuters) – British renewable power generator and network operator SSE Plc said on Wednesday it was on track to invest 7.5 billion pounds ($10.6 billion) in low-carbon projects up to 2025. The company turned its focus to renewable power generation and networks after selling its household energy supply and services arm to OVO Energy at the beginning of 2020 in a deal worth 500 million pounds. SSE is building the world largest offshore wind…