Several important studies and white papers are being developed by EROCT that specifically relate to renewable generation, particularly Solar, Wind, Energy Storage and Distributed Energy Resources (DER).  TREIA’s president Hala N. Ballouz, is actively participating in the ERCOT groups overseeing these studies and we welcome input from TREIA members.

ON August 25 in the DREAM TF Workshop, ERCOT presented the DER White Paper, as well as presented Issues to be tackled that were identified by the Stakeholders during the workshop.  Both the paper and the issues list can be downloaded from the following link.  The white paper is an important read for stakeholders.

TREIA has taken the lead on two action items (see below) for the DER White Paper, which are very relevant to our members.  TREIA and our members are tasked with fleshing out the costs/benefits and significance of DER Light and DER Heavy options.

Item #4: What are the cost/benefit of proposed DER Light and DER Heavy? i.e., what are the impacts on LSE obligations (AS obligations, T&D charges, Load Ratio Share uplifts, etc.)?

Item #5: Should DER Light or DER Heavy status be optional, or mandatory?

  • How would it work if mandatory?
  • If optional, would the DER’s selection be permanent? If not permanent, how frequent could a DER change its status?

TREIA is also watching over the Panhandle Transfer Analysis study findings and has provided comments to ERCOT.  This study is going to the PUC on September 15.

ERCOT’s findings justify the addition of “Synchronous Condensers”  for the committed 3,604 MW of wind generation in the Panhandle (that have met section 6.9 of the protocols).

The study also briefly looked at the system needs if an additional 300 MW were considered (3,604 + 300 MW), and the justification of adding a “Second Circuit” on the Alibates-Windmill-OgallalaTule Canyon 345 kV line.

TREIA’s recommendation to ERCOT included suggestions to show the results of the aggregated benefits of the addition of both the “synchronous Condensers” and the “Second transmission Circuit” for the case of adding (3,604 + 300) MW of wind in the Panhandle.

Justification of the second circuit may be challenging and will be carried by the wind industry at the PUC after submittal of the ERCOT report.  If one more wind project in the panhandle were to meet the 6.9 protocol requirements beyond the currently 3,604 MW then that may significantly enhance the chances of the second circuit to be approved.

ERCOT also presented the first Scope of the West Texas Solar Penetration Study:

Electric Power Engineers and TREIA’s President will be working closely with ERCOT on this study, which will be conceptual at first, however is significant in terms of outlook on what the area needs are.  Note that ERCOT is also conducting in parallel on a West Texas Load study, which will target transmission upgrades to meet the high load growth in West and Far West Texas.