USA, Texas: Reconductoring existing transmission lines with high-capacity conductors could save around $20 billion in Texas under a high-growth electricity scenario, according to modelling by Evolved Energy Research.
The study examined the ERCOT system through 2040 and found that around $10 B of reconductoring investment could avoid approximately $30 B in new greenfield transmission costs.
Significant new infrastructure would still be required, however, with the model estimating around $35 B in remaining greenfield transmission investment.
The analysis used Evolved Energy Research’s RIO model, which compares three grid-expansion options: reconductoring, new transmission construction and voltage upgrades. The ERCOT network was modelled using approximately 5,000 buses and 7,000 transmission lines.
The researchers argue that detailed nodal modelling is important because simplified regional models may not capture where reconductoring can substitute for new lines.
ERCOT was described as comparatively favourable for new long-distance transmission construction. The study therefore suggests that reconductoring could be even more valuable in regions where permitting and building new lines is slower or more difficult.
The findings indicate that reconductoring could provide a faster and lower-cost way to increase transmission capacity, while still requiring substantial investment in new grid infrastructure.
Source: PV Magazine
