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SPP
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SPP

Southwest Power Pool, the regional transmission organisation covering 14 US central states.

SPP, a non-profit, member-owned grid operator across 14 central US states, weighs a Kansas-Oklahoma wind corridor that is drawing data-centre builds away from Texas's congested ERCOT queue, ahead of its own FERC tariff reply due 17 August 2026.

Last refreshed: 4 August 2026 · Appears in 1 active topic

Key Question

Can SPP's wind corridor absorb data-centre demand flowing away from Texas's congested ERCOT queue?

Timeline for SPP

#12 23 Jul

Targeted a 16 November filing

Data Centres: Boom and Backlash: Six US grid operators file, none say yes
#8 18 Jun

Received show-cause order to justify or reform large-load tariffs

Data Centres: Boom and Backlash: FERC delays its grid rule to 2027
View full timeline →

Background

SPP (Southwest Power Pool) operates the high-voltage grid across 14 central Plains states, from North Dakota to Oklahoma, including Nebraska, Kansas and Missouri. It is a non-profit, member-owned organisation, meaning the utilities it interconnects are its members rather than independent investors, a governance structure that sets it apart from investor-owned or state-run RTOs elsewhere in the country.

SPP manages one of the fastest-growing renewable energy corridors in the US, with substantial wind generation capacity in Kansas and Oklahoma that has drawn data-centre developers seeking lower-carbon, competitively priced power. Some of that interest is displacement: operators are routing builds into SPP's footprint specifically to avoid ERCOT's 438 GW Texas interconnection queue.

FERC's RM26-4-000 rulemaking, opened 18 June 2026, put SPP's large-load tariff rules under review alongside five peer grid operators. SPP's own reply is due 17 August 2026, giving the pool a chance to shape tariff terms around its member-owned governance rather than accept a template built for investor-owned peers; comments close 16 September, and a nationwide standard is unlikely before 2027.

Common Questions
What is the Southwest Power Pool and which states does it cover?
SPP (Southwest Power Pool) manages electricity transmission across 14 US states in the central Plains, including Kansas, Oklahoma, Nebraska, Missouri, and North Dakota. It is a non-profit, member-owned organisation and one of six RTOs under FERC oversight.
What did FERC require from SPP in June 2026 on data-centre connections?
FERC issued SPP a Section 206 show-cause order on 18 June 2026, directing it to justify or reform its large-load tariffs across five categories. SPP must respond by 17 August 2026, with a binding standard not expected until 2027.Source: FERC
Why are data centres moving into SPP's territory instead of ERCOT?
Operators are routing builds into SPP's Kansas and Oklahoma wind corridor partly to avoid ERCOT's 438 GW Texas interconnection queue, drawn by lower-carbon, competitively priced power in SPP's footprint.Source: Lowdown
When must SPP respond to FERC's tariff review?
SPP's reply to FERC's Section 206 show-cause order is due 17 August 2026, with public comments closing 16 September and a nationwide standard unlikely before 2027.Source: FERC
Source Material