In 2025–2026, most utilities are migrating to STS Edition 2 (STS 2.0) , which introduces:
Edition 2 makes any legacy “numeric token generator” absolutely obsolete. New meters will refuse old STS-1 tokens.
If they do not work, why does the search term persist? Three reasons: Siemens Cashpower 2000 Electricity Code Generatorl
1. The Dunning-Kruger effect in coding: Amateur programmers find the open-source STS library on GitHub. They build a GUI that generates a 20-digit number. It is mathematically valid (checksum passes), but it is cryptographically wrong (decrypts to negative kWh). They upload it as a "generator." New users try it, get "Error 8 (Invalid Token)," and assume they did something wrong.
2. The YouTube loop: Scammers upload videos showing a generator "working" on a meter. Watch carefully: The meter is always a demonstration unit in a workshop, not a live utility meter. Demo meters use a default key (0000000000000000), which is trivial to generate for. Live meters use unique keys. In 2025–2026, most utilities are migrating to STS
3. Disgruntled insiders: Occasionally, a utility employee steals a batch of valid tokens from the vending server for a specific meter ID. They sell these as a "generator software." The buyer gets 10 valid codes, uses them, and thinks the software works. When the 11th code fails, the seller blames "an update." In reality, the seller merely sold pre-generated stolen tokens.
The name historically reflected a system designed for cash-based prepayment (no postpaid bills, no debt risk for utilities). “2000” referenced early firmware versions, though the term now broadly refers to STS-based prepaid meters from Siemens and its licensed manufacturers (Conlog, Hexing, Landis+Gyr, etc.). Edition 2 makes any legacy “numeric token generator”
The Cashpower 2000 uses the STS (IEC 62055-41/51) standard. This standard employs 3DES (Triple Data Encryption Standard) or AES-128 encryption. Each token contains:
Here is the critical engineering fact: The meter keeps a history of the last 255 TIDs used. Once a TID is entered, it cannot be reused. If a generator attempts to inject a code with a TID that is too old or already used, the meter permanently rejects it.
No "generator" has ever successfully produced a repeating sequence of valid tokens for a Cashpower 2000 meter in a laboratory setting. The only way a generator works is if the utility itself has leaked its master encryption key—a federal crime in most jurisdictions.
Every Cashpower 2000 meter has a unique 24-byte manufacturer key and a meter serial number. Without these, no token can be valid. A generic generator would need to know your specific meter’s credentials—which are stored only in the utility’s vending system and the meter itself.