Latest ERCOT planning report again points to gains for wind and solar

Every month, ERCOT — the Electric Reliability Council of Texas — releases a monthly planning report which reviews existing and new generation resources, asynchronous tie interconnection, transmission planning and other notable activiites. Once again, the December  2013 System Planning report showed significant gains for wind. Thus, several new wind projects went on-line in December, bringing the total amount of wind within ERCOT to 11,255 MWs, including 2,775 MW in the South zone, which is essentially coastal wind resources which tend to blow more consistently during the days. In addition, three new wind projects signed interconnection agreements in West Texas.

According to their latest summary of Generation Interconnection Requests, some 15,301 additional MWs of generation have signed interconnection agreements. Of this, 7,484 MWs is gas generation, and 7,447 is wind generation. Some 130 MWs of solar projects have confirmed interconnection agreements with transmission companies. Only one coal project — the Summit carbon-capture project near Odessa — has a signed interconnection agreement. In addition, some 35,000 MWs of additional generation is in the study phase — looking to see if going forward makes sense. Of this, about 15,000 MWs is gas, and 17,000 MWs is wind, with another 2,700 MWs of solar in the development queue. There are no biomass, nuclear or coal plants, but there are 875 MWs of storage being considered. The planning report shows that the future of electricity in Texas will be some combination of wind, solar, storage and yes, some newer gas units. Coal and nuclear appear to have no future. The Sierra Club will continue to work to set the rules so that the cleanest resources — wind, storage, solar and of course energy efficiency and demand response – can compete and ultimately win. According to our electric grid operator, those resources are already winning!

The report also lists three “ties” — that is devices that allow the ERCOT grid to interconnect with either the Western, Eastern or Mexican electric grids. While a small interconnection will go into effect this year — known as Railroad — there are two major projects being considered which would allow significant renewable resources to move out of Texas to other markets, or alternatively, other markets into Texas’s.  The Southern Cross HVDC — an interconnection with the Eastern SERC grid — could move massive amounts of wind — up to 3,000 MWs — in Texas and Oklahoma (and solar too) into the Southeast, while the Tres Amigas project in eastern New Mexico could allow 1500 MWs of Texas wind into New Mexico, Arizona and California (and perhaps some solar from those states into Texas). While these projects are still undergoing studies, they could revolutionize the use of renewables throughout the Southern US. Sierra Club will also be watching these projects, and is generally supportive, though the location of transmission lines and wind development must be sited appropriately to avoid any special habitats or special places. Onward!

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