Kansas SPP market holds 67.2 excess-power score and 22.5 constraint index; developers must verify time-to-power before locking site
## Highlights
Rural SPP, Kansas (SPP ISO) scored **67.2 on the DCPI excess-power index** this week, placing it in the top five US markets for available headroom. With a constraint index of just 22.5, the market sits well below the 70+ threshold that defines bottleneck zones.
The score reflects ample generation capacity and transmission headroom across SPP's rural Kansas footprint — a region historically underutilized for hyperscale data-center development. While SPP as a whole holds **233 GW in its interconnection queue** (21% of all US queued load), rural markets within the ISO face less competition for transformer and substation capacity than urban SPP nodes.
## What It Means
Rural SPP now ranks alongside Cheyenne (WECC) and select MISO West markets as one of the few US locations with both **excess power available today** and **sub-median constraint risk**. For hyperscale developers and colo operators, it offers a credible alternative to bottlenecked PJM and ERCOT markets where queue wait times exceed 36 months.
The second-order implication: **time-to-power remains the binding constraint**, not available MW. SPP's rural interconnection process is faster than ERCOT's but still carries 18–24 month timelines for new load above 50 MW. Developers betting on 2027 online dates must lock interconnection agreements in Q3 2026.
## Methodology
DC Hub's DCPI excess-power index is calculated daily using live ISO generation data, interconnection queue depth, transmission constraint flags, and historical load growth. Markets scoring above 65 indicate strong available headroom; scores below 25 signal avoidance zones.
Source: DC Hub Data Center Power Index (https://dchub.cloud/dcpi/rural-spp). Updated daily.
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