autoabastecerse

To be self-sufficient, producing or supplying enough of something for one's own needs without relying on outside sources — often about food, energy, or water: el pueblo se autoabastece de energía solar. Common in economics, agriculture, and sustainability writing.

• La granja se autoabastece de verduras todo el año. — The farm is self-sufficient in vegetables all year round.
• El país busca autoabastecerse de energía renovable. — The country is aiming to be self-sufficient in renewable energy.
• La comunidad se autoabastece de agua gracias a un pozo propio. — The community supplies its own water thanks to its own well.

Using autoabastecerse for a person meeting a single need once — it describes an ongoing, structural self-sufficiency (a farm, a country, a system), not a one-off act like buying your own groceries.