-they would supply
The word abastecerían is the conditional form of abastecer in the third person plural.
See the full abastecer conjugation


10 de ellos... es poco menos de 93 mil metros cuadrados 75 mil metros cuadrados... 10 de ellos abastecerían a Sausalito... con esa diferencia.
10 of these—it's just under a million square feet—800 and some thousand square feet—10 of these would power Sausalito—the delta on this.
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