ERCOT has recently released a series of biannual reports suggesting adequate electric resources in Texas over the coming months and years. While “resource adequacy” has been a buzzword in Texas in recent years, due in part to a series of unfortunate outages from fossil fuel plants and extreme weather events, the ERCOT reports released today suggest a healthy reserve — in normal weather situations. This is due in part to the continued use of energy efficiency and demand response, as well as significant investment in new power plants, including wind, solar and natural gas.
According to its 10-year projection report known as the “Report on Capacity, Demand and Reserves in the ERCOT Region,” ERCOT expects that Texas will meet its current reserve target of 13.75% in 2015, 2016 and 2017. By 2018, reserves would dip under the current target, falling to 12.3%.It is important to note, however, that ERCOT — as per its current board policy — continues to discount the capacity of wind resources to only 8.75% at peak demand since wind values tend to be lower on a hot summer day. However, recent ERCOT proposals suggest that West Texas wind should be valued closer to 15%, while Coastal wind resources actually provide closer to 40% at peak times. Making those adjustments would raise the reserve margin. According to ERCOT’s latest Planning Report, also recently released, over 8,712 MWs of wind power is expected to be added over the next three-and-a-half years, bringing total wind capacity to some 19,777 MWs by 2017. That report also highlighted some 3,000 MWs of solar that is being developed in Texas, though only a few of those projects have signed interconnection agreements.
The report also used ERCOT’s latest load forecasts, which take into account the impact of energy efficiency, while also giving credit for demand response programs run by both ERCOT, as well as transmission and wire companies. Thus, the report assumes that at least 1,900 MWs of these demand response programs will be available to the market should they be needed.
A shorter term forecast — known as the Seasonal Assessment of Resource Adequacy — shows some concerns for the upcoming summer, however. ERCOT reports that the summer will start with tight reserves, but that six new gas and wind generating projects will add some 2,122 MWs of power by the end of the summer. ERCOT states that in normal weather there should be sufficient reserves, though in extreme weather situations, or should several large units have issues, they would need to rely on their demand response products, operating reserves and a call for additional energy conservation.
Sierra Club believes that new generation — particularly from wind and solar — along with continued investment in demand response and energy efficiency should keep the lights on in Texas for years to come. Among our recommendations are increasing the required utility energy efficiency goals to 1% of peak demand by 2018, increasing the budget for Emergency Reserve Services, and allowing demand response companies to bid in directly into the energy market. Stay tuned for more. Click here for access to several of the ERCOT reports.