Alphabet has agreed to buy Intersect Power for 4.75 billion dollars.
The acquisition reflects surging electricity demand from artificial intelligence data centres.
Bloomberg reported the cash deal includes existing debt.
Alphabet seeks tighter control over power generation for Google facilities.
Expanding AI workloads are straining United States electricity grids.
Google partnered with Intersect through a minority investment last year.
The takeover grants access to projects already contracted to Google.
Sundar Pichai said Intersect will accelerate capacity expansion.
He called the move essential for United States leadership in artificial intelligence.
Industry rivals are racing to secure power amid ageing grids.
Intersect develops large solar and battery storage assets.
The company controls fifteen billion dollars in energy assets.
Texas has emerged as a hub due to renewable resources.
Intersect will retain its brand under chief executive Sheldon Kimber.
Assets contracted to other customers remain outside the deal.
TPG Rise Climate will keep stakes in excluded projects.