The phrase "available substitutes" is correct and usable in written English.
You can use it when discussing alternatives or options that can replace a particular item or service.
Example: "When considering a new product, it's important to evaluate the available substitutes to ensure you make the best choice."
Alternatives: "alternative options" or "replacement choices".
Available substitutes, like natural gas, would need to be imported.
Reclaimed asphalt pavement (RAP) and portland cement concrete (RPCC) are abundant and available substitutes for natural aggregate in many areas.
And on Monday, Mr. Torricelli released an analysis purporting to show that BeneCard promotes drugs that cost more than many available substitutes.
But that was a relatively easy fight, because the chemicals in question were not central to the world's economy, and the manufacturers had readily available substitutes to sell.
("Because the ability of consumers to turn to other suppliers restrains a firm from raising prices above the competitive level, the definition of the 'relevant market' rests on a determination of available substitutes").
Faced with a keen sense of grievance and a distinct lack of super-villains, Andy launches a low-budget campaign of terror on the nearest available substitutes - an assortment of jocks, bullies and minor jerks.
Joyce became the fully available substitute mother, writing up her observations throughout the day.
Polls suggest that none of the available substitute Socialist presidential candidates would enthuse the electorate.
If insufficient quantities of native topsoil are available, substitute materials derived from the overburden may be used as soil media.
That's the sorry state of Spanish politics: naked personal revenge seems to have become the only available substitute for accountability.
I now see how criticism is a readily available substitute for creation; tearing down the work and ideology of others is far easier than taking the time to create something of your own.
