Re: we lost the majority of our historical data for the last 20-25 years.
The difference between a customer who always pays on time and one who needs chasing - is substantial in that business.
And then there are the records of properties built, wired, inspected and connected, meters installed... Obviously the vast bulk of records will be substantially newer, but a few outliers can go back a very long way. And *those* records could be very important.