While some still struggle to revive the corpse of the Office of Technology Assessment, some of the work they have done was shifted to the National Academies and the Congressional Research Service (CRS). Unfortunately, CRS reports are not made publicly available, at least officially.
However, you can occasionally get a handle on some reports, and a recent bunch includes some technology assessment efforts. One concerns electric grid energy storage, and two others are focused on hydraulic fracturing/fracking. All reports were ‘released’ in the last month or so.
This is just me being a pest, but I find it hard to believe that many in Congress access these reports if they aren’t made accessible to the public. That is to say, who is going to know about the reports, besides the members requesting the report, if they aren’t well publicized?