DOE SPP Emergency Orders 202-26-37 and 202-26-37A: What Home-Battery Owners Should Know
Current status
- Order issue dates
- Original Order No. 202-26-37 issued July 26, 2026; Extension Order No. 202-26-37A issued August 3, 2026. Operating periods: July 26 through August 3 (202-26-37) and August 4 through August 10 (202-26-37A). Expired as of August 11, 2026 unless a newer official DOE order supersedes it.
- Original order
- Order No. 202-26-37: July 26 through August 3, 2026.
- Extension
- Order No. 202-26-37A: August 4 through August 10, 2026.
- Current status
- Expired as of August 11, 2026 unless a newer official DOE order supersedes it.
- Last verified
- August 15, 2026.
- Next review
- Check the DOE 2026 Section 202(c) orders index for a replacement or later SPP action.
Summary: On July 26, 2026, the U.S. Department of Energy issued Order No. 202-26-37 for Southwest Power Pool (SPP). The order took effect at 12:22 p.m. Central Daylight Time, was extended by Order No. 202-26-37A through 11:59 p.m. CDT on August 10, 2026 (per the DOE orders index) (except for specified reporting and compliance duties), and has expired unless a newer official order supersedes it. It directs SPP to dispatch specified generation as needed for reliability and permits SPP to direct certain backup resources—including battery storage at data centers and other large industrial or commercial sites—as a last resort before or during an Energy Emergency Alert 3. This is a regional grid action, not a program that lets homeowners connect a battery, avoid an outage, or receive payment.
Evergreen context: For home-outage planning, pair this update with Home Power, the Critical Loads Planner, and the Battery Backup Runtime Calculator.
What happened
After earlier Department of Energy emergency orders for PJM Interconnection and SPP expired on July 21, the DOE’s 2026 Section 202(c) orders index added a new SPP entry: Order No. 202-26-37, dated July 26, 2026. The operative order document says a statutory emergency existed in SPP’s West and East Balancing Authority Areas because of increased demand, shortages of electric energy and generation or transmission facilities, and other causes.
The order followed several SPP advisories. It says the West area had a Conservative Operations Advisory through August 1, 2026, while the East area had a Resource Advisory through July 30, 2026, at 7:00 p.m. CDT. The order also says SPP anticipated hot weather continuing through August 3. Those are operating conditions cited in the order, not a forecast that every customer will lose power.
The DOE’s July 26 announcement describes the action as protecting power across 17 states and says DOE estimated that more than 35 gigawatts of unused backup generation remained available nationwide. That figure is DOE’s national estimate; it is not a measure of residential battery capacity, a promise that all of those resources can run, or a projection of household outage protection.
What the order authorizes
Order No. 202-26-37 gives SPP two related tools for the limited emergency window:
- Specified generation: SPP may dispatch the units identified in the order’s exhibit, and later qualifying additions, only as needed to maintain reliability.
- Backup resources: From July 26, SPP may direct auxiliary, standby, directly connected, battery-storage, or other backup resources to operate as a last resort before an Energy Emergency Alert 3—before firm load interruption—or during an EEA 3.
The order describes backup resources at data centers, including hyperscaler facilities, and at other large-load industrial and commercial customer sites. “Battery storage” in this document therefore refers to resources that SPP can call in that regional operating context. It does not mean that a typical residential battery can be dispatched by SPP, that a homeowner can export to the grid under this order, or that a home system will receive compensation.
Why it matters
The important change is that a new, dated emergency authority now sits between the July 21 expiration of Orders 202-26-35 and 202-26-36 and the end of the heat-related operating window. The measure is aimed at grid operators and specified resources. It does not change a household tariff, rewrite a utility’s interconnection rules, or create a new residential storage incentive.
It also shows why the operating mode matters more than the word “backup.” Grid-scale, commercial, and residential systems can all contain batteries, but they have different controls, contracts, interconnection arrangements, power ratings, and safety boundaries. A federal emergency order cannot be used to infer that a particular home battery will keep a refrigerator, air conditioner, well pump, or medical device running.
The order excludes backup resources serving critical reliability or backup needs at facilities such as hospitals, first-responder operations, 911 call centers, water and wastewater facilities, and certain natural-gas facilities. It limits operation to the times and parameters SPP determines are needed for reliability and requires daily notifications about resources designated and operated under the allowances. Applicable environmental monitoring, reporting, recordkeeping, and other legal obligations remain relevant.
Who is affected
The direct parties are SPP, its transmission owners, specified generation units, and qualifying backup resources at affected large-load sites. Utilities, generators, and large commercial customers may see operating instructions or filings connected with the order. Households and small businesses are affected indirectly if emergency operations change the likelihood of conservation requests, demand-response events, curtailments, or outages in the SPP region.
People outside the SPP region should not treat this order as a national household-power notice. People inside the region should use their own utility’s alerts and outage information. The order’s existence is evidence of a time-limited reliability action; it is not evidence that a particular neighborhood is about to lose power.
Numbers and claims in context
| Order | Area | Effective window | Reader-facing context |
|---|---|---|---|
| 202-26-35 | PJM | July 14 at 11:59 p.m. EDT through July 21 at 11:59 p.m. EDT | Earlier temporary authority for specified units and qualifying backup resources; expired. |
| 202-26-36 | SPP | July 20 at 11:59 p.m. EDT through July 21 at 11:59 p.m. EDT | Earlier SPP authority; expired before the new order below. |
| 202-26-37 | SPP West and East Balancing Authority Areas | July 26 at 12:22 p.m. CDT through August 3 at 11:59 p.m. CDT | New authority for specified generation and limited emergency use of backup resources; not a residential program. |
| 202-26-37A | SPP West and East Balancing Authority Areas | August 4 from midnight CDT through August 10 at 11:59 p.m. CDT | Extension of the same emergency authority for specified generation and limited emergency use of backup resources; also not a residential program. |
Time zones matter here. The new order’s operative text uses CDT and gives an issuance time of 12:22 p.m. CDT on July 26. Its reporting requirements and applicable compliance obligations continue after the operating window ends. The original order said any renewal request had to be made before its August 3 expiration; DOE instead issued Extension Order No. 202-26-37A on August 3, extending the operating window through August 10 (see the DOE 2026 Section 202(c) orders index).
Practical reader takeaway
- Use local alerts first. Enroll in utility outage and demand-response notices, and keep the utility’s restoration and conservation pages easy to find.
- List critical loads before sizing backup. Separate medical equipment, refrigeration, communications, water, and cooling needs from loads that can wait. The Critical Loads Calculator can organize the list, while the Battery Backup Runtime Calculator can compare estimated runtime under different loads.
- Ask what equipment actually backs up the home. Rooftop solar normally does not power a home during an outage unless compatible islanding, transfer, inverter, and backup equipment are installed.
- Keep heat and medical planning separate from equipment shopping. Ready.gov’s outage guidance covers powered medical devices, refrigerated medicine, communications, lighting, and places to stay cool during extreme temperatures.
- Do not improvise building connections. Generator inlets, transfer equipment, service panels, battery wiring, and inverter settings can create fire, shock, and line-worker hazards. Follow equipment instructions and use qualified professionals for building-connected work.
For buyers, compare both power and energy. Power, measured in kilowatts, limits what can run at once; energy, measured in kilowatt-hours, affects how long those loads can run. DOE’s solar-and-storage basics also explains that storage loses some energy during charging and discharging, so nameplate capacity is not the same as usable delivered energy.
What to watch next
- Whether DOE issued later Section 202(c) emergency orders after 202-26-37A expired on August 11 — check the 2026 Section 202(c) index for new entries.
- Whether SPP or DOE published an account of which resources operated and when during the two emergency windows.
- Whether SPP, DOE, or affected parties publish an account of which resources operated and when.
- Whether utilities announce new demand-response, managed-EV-charging, thermostat, or home-battery programs before another peak event.
- Whether any tariff, filing, or program terms change; this order does not itself change a household electricity rate.
- The expired orders are historical context: they no longer authorize SPP to dispatch resources, so households should rely on current utility notices for today’s conditions.
Related NerdVolt links
- Battery Backup Runtime Calculator
- Critical Loads Calculator
- Backup Power System Integration
- Home Solar Microgrid Guide
- Integrating EV Charging With Home Solar
Sources
- DOE 2026 Section 202(c) orders index
- DOE page for SPP Order No. 202-26-37 and the operative order document
- DOE July 26, 2026 announcement
- Southwest Power Pool grid conditions, cited by the order
- EIA analysis of small-scale solar and New York’s demand curve, June 26, 2026
- Ready.gov power-outage planning
- DOE solar-and-storage basics
Educational note: this article provides general clean-energy and outage-planning context. It is not electrical, legal, tax, permitting, roofing, engineering, or investment advice.
How to verify the numbers on this page
This page covers DOE SPP Emergency Orders 202-26-37 and 202-26-37A: Household Takeaways.[1] Figures here depend on the exact model, site, policy, study, test method, operating conditions, system boundaries, and comparison baseline. Verify current manufacturer, regulator, standard, or primary-research documents before acting.
[1] Check the documents in the Sources section on this page for the figures this page repeats.