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Investor-owned utilityMidAmerican Energy interconnection application
MidAmerican Energy is an investor-owned utility serving 717,275 residential customers in Iowa, Illinois, South Dakota (EIA-861, 2025). Applications: PDF + mail (State standard interconnection forms (IA/IL/SD)). Gridpol files MidAmerican Energy interconnection applications for licensed installers – solar, storage and EV chargers – with single-line diagram and site plan, unlimited for $500 a month.
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Process verified from MidAmerican Energy’s official sources (see below). Confirm submission channel (mail vs email to privategeneration@midamerican.com) and IL/SD fees on first project.
MidAmerican Energy at a glance
MidAmerican Energy Co (Berkshire Hathaway Energy)
TypeInvestor-owned utility
EIA utility ID12341
Residential customers717,275 (EIA-861, 2025)
Net-metered residential customers5,523 (EIA-861, 2025)
Service territory55 counties in Iowa, 3 counties in Illinois, 2 counties in South Dakota
How to applyPDF + mail – State standard interconnection forms (IA/IL/SD) · official link
Who submitsCustomer (Interconnection Customer) signs; equipment/electrical contractor listed on form. Installer needs MidAmerican third-party access form to obtain usage history. Iowa Level 1 form: mail completed form with fee to utility; questions privategeneration@midamerican.com.
Export compensationNet billing – Iowa Rate IO (Inflow/Outflow)
IA: 15-minute inflow/outflow, outflow credited at retail volumetric rate, carryover expires per Jan/Apr billing year. IL: Rate NEM (applied ≥1/1/2025, supply credit kWh or monetary). SD: Rate QF only.
Per state rules (199 IAC 45 / IL Part 466 / SD 20:10:36); commissioning date changes must be reported within 15 business days (IA form).
Documents MidAmerican Energy asks for
- Interconnection application formIA Level 1 (≤20 kVA) / Level 2-4 (≤10 MVA); IL Level 1 (≤25 kW) / 2-4; SD Tier 1 (≤10 kW) / Tier 2-4 Gridpol prepares this.
- Customer signatureApplicant signature must match contact name
- Single-line diagram (one-line)One line diagram attached Gridpol prepares this.
- Site plan / site layoutPlot plan relative to streets/landmarks Gridpol prepares this.
- Inverter spec sheetManufacturer specs + NRTL (UL) label information
- Proof of insuranceProof of homeowner's or general liability insurance
- Other utility-specific documentCertificate of Completion + inverter setting details after install
- Letter of authorization / designated agent form (when applicable)Third-party access form for installer to get usage history
- Net metering / net billing agreement (when applicable)IL only: Net Energy Metering Application, Installer Certification Form, copy of installation invoice
How the MidAmerican Energy process runs
- Gather usage history (installer needs third-party access form)
- Submit state interconnection application + fee
- MidAmerican review under state rules
- Identify system/grid upgrades and costs
- Sign standard state interconnection agreement
- Install; submit Certificate of Completion and inverter settings
- Inverter settings review + witness test ($125 IA)
- Meter change; executed Certificate of Completion = permission to operate
- New rate takes effect
Fees
| Fee | Applies to | Note |
|---|---|---|
| $125 | Iowa Level 1 application | per Iowa Level 1 form |
| $125 | Iowa witness test | cost-based, max $125 |
Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.
Size levels and limits
| Level | Up to | Note |
|---|---|---|
| IA Level 1 | 20 kW | kVA |
| IA Level 2-4 | 10000 kW | |
| IL Level 1 | 25 kW | |
| SD Tier 1 | 10 kW |
Storage, EV and stamps
Battery storage
Iowa form allows 'Storage – specify type' as energy source; no separate storage rules found.
Sources
- MidAmerican Customer Interconnection and Rates: https://www.midamericanenergy.com/customer-interconnection (retrieved 2026-11-13)
- MidAmerican Customer Energy Generation and Rooftop Solar: https://www.midamericanenergy.com/customer-energy-rooftop-solar (retrieved 2026-11-13)
- Iowa Level 1 Interconnection Request: https://www.midamericanenergy.com/media/pdf/iowa-level1-interconnectionrequest.pdf (retrieved 2026-11-13)
Other utilities in Iowa
- Alliant Energy (Iowa)419,451
- Corridor Energy Cooperative30,992
- City of Ames25,123
- Eastern Iowa Light & Power Cooperative20,472
- Cedar Falls Utilities17,746
- Midland Power Cooperative12,083
- Maquoketa Valley Rrl Electric Cooperative11,161
- Board of Water Electric & Communications10,105
- Iowa Lakes Electric Cooperative9,757
- North West Rural Electric Cooperative9,461
$500 / month
Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.
- Unlimited interconnection applications
- Single-line diagram and site plan for every application
- Pre-submission check against the utility’s requirements
- Homeowner e-signature link for the authorization
- Filing in your utility portal accounts or by the utility’s method
- Utility questions, corrections and resubmissions
- Follow-up through approval, inspection and PTO
- Customer list, exports, API and webhooks
Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.