Client in Lubbock installed 5MW solar system and registered as Qualified Scheduling Entity in ERCOT. Now they're getting bills from both Oncor (transmission) and direct ERCOT settlement charges. Plus retail electric provider is still charging them for portions of usage. Three separate bills for the same facility. Anyone navigate ERCOT wholesale participation with solar?
ERCOT solar + wholesale market participation - billing nightmare
Wayne - ERCOT wholesale participation is complex. Your client is probably registered as both load and generation resource. That creates dual billing with TSP (Oncor) and ERCOT settlement. REP should only bill for non-wholesale portions.
Calvin's right about dual billing. But Texas rules require clear separation between wholesale and retail activities. If client is QSE for solar production, retail load should still go through REP at normal rates.
That's what I thought too, Lena. But ERCOT is charging settlement for both generation and load. REP claims they can't bill retail rates if customer is registered QSE. Three-way finger pointing between ERCOT, Oncor and REP.
Wayne - sounds like registration error. Client might be registered as "Load Serving Entity" instead of just generation resource. Check their ERCOT market participant registration carefully.
Good catch Leah! Checked registration and client is indeed listed as LSE not just generation. Solar installer must have checked wrong box on ERCOT application. Working to correct it now.
Update: ERCOT corrected the registration. Back to normal retail billing through REP. Lesson learned - double-check all ERCOT market participant paperwork before solar goes online. Wrong registration category can create billing chaos.