How to sell an idea to Tesla
No stated policy
Tesla publishes no policy on outside ideas. It has bought SolarCity and Maxwell Technologies.
Read off Tesla's own pages on

What it has bought from outside
- 2016
SolarCity from Peter and Lyndon Rive $2.6 billion
“On August 1, 2016, Tesla announced that it would be acquiring the company in an all-stock $2.6 billion transaction as Tesla's mission since its inception has been "to accelerate the world's transition to sustainable energy."…” en.wikipedia.org
- 2019
Maxwell Technologies (ultracapacitors, battery tech) from Maxwell Technologies US$218 million
“In February 2019, electric vehicle and clean energy company Tesla, Inc. announced that it planned to acquire Maxwell Technologies.…” en.wikipedia.org
Other companies that take an invention or product idea
3MHas a submission portal3M takes ideas for patented products through a form on its idea submission policy page, which asks for the patent.
Acroterion, CC BY-SA 4.0 Colgate-PalmoliveHas a submission portalColgate-Palmolive takes product ideas through its submission website, colgatepalmolive.yet2.com, and pays nothing for a first submission.
en:User:DG, Public domain General MillsHas a submission portalGeneral Mills seeks outside partners through G-WIN, its Worldwide Innovation Network, and its Work with us page takes food solutions and…
Nyttend, Public domain Mondelēz InternationalHas a submission portalMondelēz takes new technologies and innovations through its Innovation OI Portal at mdlzcollaboration.com, unpaid at first.
Ralff Nestor Nacor, CC BY-SA 4.0 PepsiCoHas a submission portalPepsiCo accepts no unsolicited ideas, and anything sent is PepsiCo’s to use.
Tony Webster, CC BY 2.0 Procter & GambleHas a submission portalP&G looks for products and technology from outside innovators and patent holders through Connect + Develop.
Guilhem Vellut from Annecy, France, CC BY 2.0 QVCOpen applicationQVC looks for new products its customers will love, and brings vendors and entrepreneurs onto its broadcast and digital channels through…
掬茶, CC BY-SA 3.0 Stanley Black & DeckerHas a submission portalStanley Black & Decker calls makers, creators and inventors to its Open Innovation Sprint, at stanleyblackanddecker.com/submityouridea.
Leefisher91, CC BY-SA 4.0