This is going to need backed off. They're estimating more than 16.7M of these engines, yet only $30M planned for rebates.
I have a cordless leaf blower. Who is thinking this is much quieter? It isn't, if it has as much power. The battery for it is $130 to get 10 minutes of runtime.
Mowers, string trimmers, and some other tools are a different story, are significantly quieter but not equally powerful leaf blowers.
Now imagine a contractor who needs to run only one a mere two hours a day. Add on the expense of a vehicle lighter/battery powered charger to charge in the field, say 1X each pack/day, and you'd still need ~$850 worth of batteries and addt'l charger for two hours use. Granted, it's probably more like two or more guys with one hour use but that doesn't make the cost go down.
Get a weaker blower and it may run longer per charge, but takes longer to get the job done, as does going somewhere to recharge fewer batteries, so more man hours equals higher labor cost too.
The rebates (less than $2/engine) wouldn't even cover the additional labor cost from reduced productivity for a single day of swapping batteries multiple times, never mind that $850 per piece of equipment for batteries/charger, PLUS the equipment cost, or higher when talking about something larger than a leaf blower.
This doesn't even count replacement batteries. If you are charging one, say 300X per year (6x per hour per my leaf blower example above), you will need those soon enough.
This is just another liberal move by those who believe in unicorns. It will make sense once we have that new revolutionary battery tech that solves the cost and power density issues but until then, legislature should not trump math and science, because math and science always wins.
It's going to result in more repairing of older equipment, running 2 cycle engines with a richer oil mix (more pollution) to make them last longer, and a black market if the date of enactment isn't pushed back till that magical new battery tech hits the market.