Huh?
CBO and JCT now estimate that the insurance coverage provisions of the ACA will have a net cost of just under $1.1 trillion over the 2012–2021 period — about $50 billion less than the agencies’ March 2011 estimate for that 10-year period.
http://www.cbo.gov/sites/default/files/cbofiles/attachments/03-13-Coverage Estimates.pdf
You say 'save' CBO says 'cost'...what am I missing?
I had not seen that report. I note they state the net cost will be $50 billion less over the next ten years than estimated in last years report.
The report makes it clear that eventually we will have to go to a single payer system as the Heritage Foundation alternative passed by Congress is just a bandaid.
At least though, as the CBO plan that you referenced states: it will reduce the number of nonelderly people with health insurance coverage by 30 million to 33 million people in 2016 and subsequent years.
"Compared with prior law, the ACA is now estimated by CBO and JCT to reduce
the number of nonelderly people without health insurance coverage by 30 million
to 33 million in 2016 and subsequent years, leaving 26 million to 27 million
nonelderly residents uninsured in those years (see Table 3, at the end of this
report). The share of legal nonelderly residents with insurance is projected to rise
from 82 percent in 2012 to 93 percent by 2022. According to the current
estimates, from 2016 on, between 20 million and 23 million people will receive
coverage through the new insurance exchanges, and 16 million to 17 million
people will be enrolled in Medicaid and CHIP. Also, 3 million to 5 million fewer
people will have coverage through an employer compared with the number under
prior law."
Not as good as a single payer system, but better than what we had!