Telemetry Offsetting Technical Architecture – ERCOT White Paper

In brief

Prepared by V-Wire for the board of the Global Capacity Alliance, this draft white paper sets out Telemetry Offsetting, which it presents as ERCOT’s form of the pathway the Brattle Group recently recommended for the large-load interconnection bottleneck: netting a flexible load’s curtailment obligation against a paired, co-located resource. Dispatched separately under today’s rules, a paired battery or generator can relieve the grid while its load is still curtailed, an “attribution gap.” The paper proposes using telemetry the resources already send to tie the two together, so ERCOT’s dispatch sees one net obligation, and outlines the protocol changes that would take. It cites four of Arushi’s pieces, including her CSIS commentary on the Texas Energy Reference Design.

Key points

1. 01Speed requires flexibility, flexibility requires generation, and generation requires attribution.
2. 02Dispatched separately, a paired resource relieves the grid while its load is still curtailed: the attribution gap.
3. 03Existing telemetry would let ERCOT’s dispatch see the load and its paired resource as one net obligation.