Clayton County, Iowa

Lower Your Energy Bills with Solar Across Clayton County

From Edgewood on the Delaware County line to the northeast corner where Postville reaches into the county, SolQ installs residential solar throughout Clayton County — home of the Driftless Area’s carved bluffs, the Mississippi River towns, and the Elkader Keystone Bridge. Built for real Iowa winters and the specific utility that actually serves your address.

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Clayton County at a Glance

Clayton County was established on December 21, 1837, named for John M. Clayton, a U.S. Senator from Delaware who later served as Secretary of State under President Zachary Taylor — he never set foot in the county that carries his name. At 778 square miles, it’s the fifth-largest county in Iowa by land area, bordered by Allamakee County to the north, Wisconsin’s Crawford and Grant Counties across the Mississippi to the east, Dubuque County to the southeast, Delaware County to the south, Buchanan County to the southwest, Fayette County to the west, and Winneshiek County to the northwest. The whole county sits in the Driftless Area, the unglaciated region of carved river bluffs and steep valleys that stretches across northeast Iowa, southwest Wisconsin, and southeast Minnesota. An estimated 16,845 residents called Clayton County home as of 2025, down slightly from 17,043 at the 2020 Census. Guttenberg, a Mississippi River town founded by German immigrants and named for printing pioneer Johannes Gutenberg, is the county’s largest city at 1,817 residents.

Elkader has served as the county seat since 1846, named for Emir Abd el-Kader, the Algerian leader who resisted French colonization — a name its founders chose deliberately to honor him. Elkader is also home to the Keystone Bridge, a native-limestone span on the National Register of Historic Places, described as one of the largest twin-arched keystone bridges west of the Mississippi River. Here’s the honest picture: Elkader doesn’t have its own dedicated SolQ page yet — at 1,209 residents (2020 Census), it sits below the population threshold for standalone city pages, same as every town in Clayton County except Edgewood. SolQ has real installs on record in Elkader itself (details below), and this county page covers the seat, Guttenberg, Strawberry Point, McGregor, and every other Clayton County community in one place until standalone pages make sense.

Cities We Serve in Clayton County

Two live SolQ pages touch Clayton County today, and we’re upfront that neither one is the county seat. Tap a city below for the full picture, or keep reading — this page exists specifically to cover the rest of the county, including Elkader, Guttenberg, Strawberry Point, and McGregor.

Electric Utilities Serving Clayton County

Clayton County is not a single-utility county. Per findenergy.com’s utility-territory data, six real providers serve homes across the county — one investor-owned utility, one rural electric cooperative, three municipal electric utilities, and one smaller cooperative.

Alliant Energy

Alliant Energy is the largest electricity provider in Clayton County, with an estimated 11,097 county customers per findenergy.com — roughly two-thirds of accounts. It’s the dominant utility in Edgewood, Elkader, and most of Postville, crediting solar under its inflow/outflow billing structure. Full detail on our dedicated Alliant Energy solar page.

Allamakee-Clayton Electric REC

A member-owned rural cooperative headquartered in Postville, with an estimated 3,973 county customers per findenergy.com — the second-largest provider in Clayton County. It reaches rural addresses across the county’s northern half and typically uses an avoided-cost crediting model, separate from Alliant’s tariff.

Three Municipal Electric Utilities

Three towns run their own municipal electric utility, per findenergy.com: Guttenberg, Iowa Electric Utility (about 1,450 customers), Strawberry Point, Iowa Electric Utility (about 750 customers), and McGregor, Iowa Electric Utility (about 647 customers). Each sets its own crediting structure and interconnection process for solar exports, separate from Alliant’s or the co-ops’ rules.

Maquoketa Valley Electric

A smaller rural electric cooperative reaching the county’s southern edge, with an estimated 224 county customers per findenergy.com — the smallest of the six providers here, but a real one worth confirming if you’re near the Delaware or Buchanan County line.

Which Provider Serves You?

Inside Edgewood, Elkader, or rural addresses across most of the county, you’re likely on Alliant Energy or Allamakee-Clayton Electric REC. Inside Guttenberg, Strawberry Point, or McGregor city limits, you’re on that town’s own municipal utility instead. Near the county’s southern edge, Maquoketa Valley Electric is worth checking too. SolQ confirms your exact provider before designing your system, not after.

The customer counts above come from findenergy.com’s county-level utility-territory data. Municipal-utility towns and county-edge communities are where a second provider is most likely — SolQ confirms which one actually serves your home before you sign anything.

Real SolQ Installs in Clayton County

SolQ has completed 27 residential installs across Clayton County: Edgewood (11), Monona (6), Elkader (4), Garnavillo (3), and McGregor (3) — roughly 233 kW of installed solar on record. In Edgewood, system sizes have ranged 4.4–12.3 kW (median 6.2 kW), on streets including East Lincoln Street and South Chestnut Street, almost entirely on Alliant Energy accounts. In the county seat of Elkader, four completed installs range 4.3–11.8 kW (median 8.9 kW) on North High Street and Grandview Road, all on Alliant Energy. Monona and Garnavillo add another 9 installs between them, also on Alliant accounts, and McGregor’s three installs run larger, 7.1–21.9 kW (median 14.4 kW). We’d rather tell you the truth than invent a number that doesn’t exist: Guttenberg and Strawberry Point don’t have completed installs on our books yet. If you’re in either town, you’d be among our first.

Why Clayton County Homeowners Choose SolQ

A Real Local Footprint

27 completed installs across Edgewood, Elkader, Monona, Garnavillo, and McGregor, with real streets and system sizes on record — including the county seat itself, even without its own dedicated page yet.

Six Utilities, Confirmed Not Assumed

Alliant Energy covers roughly two-thirds of the county, but a rural co-op, three municipal utilities, and a second smaller cooperative reach the rest. We confirm your exact provider before designing your system.

Real Iowa Track Record

1,179 completed Iowa installs and counting, a 4.8-star Google rating across 413 reviews, an A+ BBB rating, and EnergySage’s 2026 Local Installer of the Year award.

Iowa Solar Tax Benefits

Iowa’s state income-tax credit for residential solar isn’t available for systems installed after 2021. Here’s what Clayton County homeowners can actually count on today.

5-Year Property-Tax Exemption

The added home value from your solar system is exempt from property tax assessment for five years after installation.

Sales-Tax Exemption

Qualifying solar equipment is exempt from Iowa sales tax. Labor is still taxable, so we break out real numbers up front.

Utility-Specific Crediting

Alliant’s inflow-outflow tariff and the crediting rules at Allamakee-Clayton Electric REC, Guttenberg, Strawberry Point, McGregor, and Maquoketa Valley Electric all differ — we confirm which applies to your exact address.

Clayton County Solar FAQ

Does SolQ have a dedicated page for Elkader, the county seat?

Not yet. Elkader’s 2020 Census population is 1,209, below the 2,500-resident threshold we use for standalone city pages, so it doesn’t have its own page the way Edgewood does. That doesn’t mean we’re new to Elkader — SolQ has 4 completed installs on record there already, all detailed on this page. This county hub is the place to start until Elkader’s own page makes sense.

Does SolQ serve all of Clayton County, or just Edgewood?

All of it. Edgewood is our most established live page in the county, but SolQ installs residential solar throughout Clayton County: Elkader, Guttenberg, Strawberry Point, McGregor, Garnavillo, Monona, and the rural addresses between them. This page exists specifically to cover the whole county in one place, not just the town with its own page.

Is Edgewood really split between two counties?

Yes, genuinely. Highway 3, which runs through the center of town, is the actual dividing line: the northern half sits in Lodomillo Township, Clayton County, and the southern half sits in Honey Creek Township, Delaware County. Edgewood’s post office has been on the Clayton County side since 1852, which is part of why we frame Edgewood as a Clayton County town on its dedicated page, even though it touches Delaware County too.

Is Postville actually in Clayton County?

Only partly, and we want to be precise about it rather than overstate it. Postville sits primarily in Allamakee County’s southwestern corner, and its dedicated SolQ page is built around Allamakee County. Only a small slice of the city’s northwest edge extends into Clayton County’s border. We link to it here for completeness, but Clayton County residents shouldn’t expect Postville’s page to be about their county specifically.

What if my town isn’t listed here by name?

If you live anywhere inside Clayton County’s borders, we almost certainly serve you, including smaller communities like Farmersburg, Volga, National, Clayton, and the rural stretches of the county. Reach out and we’ll confirm coverage, utility, and crediting terms for your specific address before you commit to anything.

What electric utility serves my home in Clayton County?

For most of the county, including Edgewood, Elkader, and rural addresses, it’s Alliant Energy — per findenergy.com, Alliant is the largest provider with an estimated 11,097 county customers. Allamakee-Clayton Electric REC (about 3,973 customers) covers much of the rest. Guttenberg, Strawberry Point, and McGregor each run their own municipal electric utility, and Maquoketa Valley Electric reaches the county’s southern edge. We confirm your exact provider before designing your system.

How does Alliant Energy credit my solar production?

Alliant credits solar production through its inflow-outflow billing structure: power you draw from the grid (inflow) is billed at your normal rate, and power you export (outflow) is credited separately at Alliant’s approved energy credit rate. SolQ checks the exact terms on your account before you sign anything. Full detail is on our dedicated Alliant Energy solar page.

What about Allamakee-Clayton Electric REC and the municipal utilities?

Allamakee-Clayton Electric REC is a member-owned cooperative headquartered in Postville, typically using an avoided-cost crediting model separate from Alliant’s tariff. Guttenberg, Strawberry Point, and McGregor each run independent municipal electric utilities with their own solar policies, and Maquoketa Valley Electric sets its own terms too. We check which utility and rate structure applies to your account and explain exactly what it means for your savings before you sign anything.

Is Iowa’s state solar tax credit still available?

No. Iowa’s state income-tax credit for residential solar isn’t available for systems installed after 2021. Two state benefits still apply regardless: a 5-year property-tax exemption on the added home value from your system, and a sales-tax exemption on qualifying solar equipment (labor is still taxable).

What about the federal solar tax credit?

If you’re buying your system outright through cash or a loan, the federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act signed in July 2025. If you go with a Lease or PPA instead, the benefit is still built in indirectly: our financing partner owns the system and claims a separate federal credit for commercial-owned solar (Section 48E, active for projects that begin construction by July 4, 2026, or are placed in service by December 31, 2027), which is part of how they can offer $0-down payments below what you’re currently paying your utility. We’ll walk you through exactly what applies to you during your free consultation.

Are there Clayton County-specific permitting requirements?

Yes, and they vary by municipality. Edgewood, Elkader, Guttenberg, Strawberry Point, and McGregor each run their own permitting process, separate from Clayton County’s own rules for unincorporated areas. We handle the paperwork with your specific city or the county, and file the interconnection application with your utility, so you don’t have to sort out which office to call.

How long does a Clayton County solar installation take, start to finish?

Many projects are installed in as soon as 30 days. Some take longer, up to 2-3 months, depending on your municipality’s permitting timeline and your utility’s interconnection queue — a municipal-utility town like Guttenberg can move differently than an Alliant Energy address in Edgewood or rural Elkader. We give you a realistic timeline for your specific address up front.

Has SolQ actually completed solar installs in Clayton County?

Yes — 27 completed residential installs on record: 11 in Edgewood, 6 in Monona, 4 in Elkader, 3 in Garnavillo, and 3 in McGregor, ranging from 4.3 to 21.9 kW in system size, almost entirely on Alliant Energy accounts. Guttenberg and Strawberry Point don’t have completed installs on our books yet, and we’re upfront about that rather than inventing a number. That’s a real, verified footprint backed by the same track record behind our 1,179 completed Iowa installs statewide.

Why is Elkader historically significant, and does that matter for solar?

Elkader is one of the only American towns named for Emir Abd el-Kader, the Algerian resistance leader its founders admired, and it’s home to the Keystone Bridge, a native-limestone span on the National Register of Historic Places, described as one of the largest twin-arched keystone bridges west of the Mississippi River. That history doesn’t change the electrical engineering, but it does mean Elkader has a mix of 19th-century limestone buildings and newer construction — a mix of roof types SolQ’s crews have already worked on across our completed Elkader installs.

Built for Clayton County

Whether you’re in Edgewood, Elkader, Guttenberg, or a smaller Clayton County community, SolQ designs your system around your actual roof, your actual utility, and Iowa’s actual winters — not a generic template.

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SolQ is an independent solar provider and is not affiliated with Alliant Energy, Allamakee-Clayton Electric REC, the City of Guttenberg, the City of Strawberry Point, the City of McGregor, Maquoketa Valley Electric, or any government agency. Savings figures shown are estimates, not guarantees. Financing offered through third-party partners; terms subject to partner approval. Tax exemptions subject to Iowa law; consult a tax professional for your specific situation. Verified as of August 2026.