Facebook is in talks to buy Titan Aerospace, a maker of solar-powered drones, to step up its efforts to provide internet access to remote parts of the world, according to reports.

Techcrunch and CNBC cited anonymous sources who are familiar with the deal and put a purchase price at $US60 million ($67 million).

Facebook spokesman Tucker Bounds said the company does not comment on rumours and speculation. Titan Aerospace representatives did not respond to requests for comment.

If Facebook does buy Titan Aerospace, the purchase could fit with the goals of chief executive Mark Zuckerberg's internet.org project. The Facebook-led partnership, which includes Qualcomm, Samsung and Nokia, was launched last year and aims to connect the more than 5 billion of the world's 7 billion people who are not already online. Presumably, internet.org could use Titan's solar-powered atmospheric satellites to serve as airborne wireless access points.