Worth County at a Glance
Worth County was organized in 1851 and named for Major General William Jenkins Worth (1794–1849), a U.S. Army officer who served in the Seminole Wars and the Mexican–American War. Northwood has served as the county seat since the county’s earliest years. At just 400 square miles, Worth County is the fourth-smallest county in Iowa by land area, sitting on Iowa’s absolute northern edge: Freeborn County, Minnesota borders it to the north, with Mower County, Minnesota touching the northeast corner. Inside Iowa, Worth County is bordered by Mitchell County to the east, Cerro Gordo County to the south, and Winnebago County to the west, with Hancock County meeting it at the southwest corner — and all four of those Iowa counties already have their own live SolQ county page, so Worth County rounds out solar coverage across this stretch of North Iowa.
Worth County’s population was 7,443 at the 2020 Census, with the U.S. Census Bureau’s most recent (2024) estimate putting it at 7,350 — a small, gradual decline typical of far-northern Iowa’s agricultural counties. Every resident of Worth County lived in a rural area as of the 2020 Census; there’s no incorporated city large enough to register as “urban” by Census standards, and the county’s economy runs on corn and soybean row-crop farming, livestock, and small-town retail anchored in Northwood. The county is also home to a genuine North Iowa landmark: the Top of Iowa Welcome Center, a public rest area and gift shop that has greeted I-35 travelers at Northwood’s exit since 1998, its Barn Boutique gift shop stocked with Norwegian-heritage gifts reflecting the Scandinavian immigrant roots common across this part of the state. Worth County is part of the Mason City, IA Micropolitan Statistical Area, putting Northwood about 20 minutes north of Mason City via I-35.
Cities We Serve in Worth County
No incorporated community in Worth County clears the roughly 2,500-resident threshold SolQ uses for its own standalone city page — Northwood, the largest, sits at 2,072. Every Worth County town is covered right here, on one countywide page.
Northwood · pop. 2,072 · county seat
Home to the Worth County Courthouse and the Top of Iowa Welcome Center on I-35. Primarily Alliant Energy territory.
Manly · pop. 1,256
Worth County’s second-largest town and SolQ’s most established Worth County market, with 4 completed installs on record, 100% Alliant Energy.
Fertile · pop. 305
A small farming community in the county’s south-central section, in Alliant Energy territory.
Kensett · pop. 257
A small town on the Winnebago River in eastern Worth County, near the Mitchell County line.
Grafton · pop. 216
Home to its own small municipal electric utility, Grafton Municipal Electric, rather than an investor-owned or co-op provider.
Joice · pop. 208
A small crossroads town in western Worth County, near the Winnebago County line.
Hanlontown · pop. 206
Worth County’s smallest incorporated town, in the county’s southeast corner.
No Worth County Town Has a Dedicated SolQ Page Yet
Because no Worth County town has crossed our population threshold for its own page, everything above is what we currently have on record — real population figures and real utility coverage, not projections dressed up as certainty. We also install throughout unincorporated Worth County, plus neighboring Mitchell, Cerro Gordo, and Winnebago counties, including Osage, Mason City, and Clear Lake. The FAQ below explains how coverage and utility service work for your address.
Electric Utilities Serving Worth County
Worth County splits across four electric providers: one dominant investor-owned utility and three smaller cooperative or municipal operators. Per findenergy.com, Alliant Energy serves an estimated 10,460 Worth County customers — the clear majority of roughly 11,639 total accounts — with Heartland Power Cooperative, Grafton Municipal Electric, and Prairie Energy Cooperative splitting the rest. We confirm which one serves your address before designing a system.
Alliant Energy
The dominant provider across Worth County, with an estimated 10,460 customers per findenergy.com — roughly 90% of the county’s electric accounts. Alliant serves Northwood, Manly, and Fertile, with a bundled residential rate around 17.67¢/kWh and an average monthly bill near $128, per findenergy.com. Solar production is credited under Alliant’s Rate IO (inflow/outflow) tariff, or Rate NM for customers who still qualify. Full detail on our Alliant Energy solar page.
Heartland Power Cooperative
A member-owned rural cooperative headquartered in nearby Thompson, IA, with an estimated 968 Worth County customers per findenergy.com — the same co-op that reaches rural Mitchell County to the east. Its interconnection and crediting rules run separately from Alliant’s IUB-regulated tariffs.
Grafton Municipal Electric
A small, community-owned municipal utility serving the town of Grafton itself, with an estimated 168 customers per findenergy.com. As a municipal utility, Grafton sets its own interconnection and solar-crediting policy rather than following a state-regulated tariff — we confirm the current policy before you sign anything.
Prairie Energy Cooperative
The smallest of Worth County’s four providers, with an estimated 43 customers per findenergy.com, reaching a limited number of rural accounts — the same cooperative that also serves a small slice of neighboring Cerro Gordo County.
Customer counts above come from findenergy.com’s county-level utility data, current as of this page’s publication. For any address near a utility boundary or town line, SolQ confirms your exact provider and crediting terms before designing your system.
Real SolQ Installs in Worth County
We’ll be direct about where our completed-project records stand in Worth County: 4 completed residential installs in Manly, on system sizes ranging 3.5–13.1 kW (median 6.6 kW, 30 kW total), on West North Street, Circle Terrace, West Bosworth Street, and Spruce Avenue, all connected through Alliant Energy and built with Axitec 440W Black and Phono 365W Black panels. We don’t yet have a completed install on record in Northwood, Fertile, Kensett, Grafton, Joice, or Hanlontown, and we say so directly rather than padding the number. What backs every Worth County project regardless is a real North Iowa track record close by: 40 completed installs in Mason City and 11 in Clear Lake, both roughly 25–30 miles south, part of 1,179 completed installs across Iowa overall. As we complete more Worth County installs beyond Manly, this section will be updated with real, address-level detail.
Why Worth County Homeowners Choose SolQ
Four Providers, One Verified Answer
Most installers assume one utility covers a whole county. Worth County genuinely splits four ways — Alliant, Heartland Power, Grafton Municipal, and Prairie Energy — and we confirm which one serves your exact address first.
A Real Manly Track Record, Not a Sales Pitch
4 completed Manly installs on record, with full system sizes and street-level detail, plus 1,179 installs statewide. We tell you plainly where we do and don’t yet have installs elsewhere in Worth County.
Built for Iowa’s Northern Edge
Worth County sits directly on the Minnesota border — genuine winter territory. Our designs and steep-mount racking account for real snow load and shorter winter days from day one.
Iowa Solar Tax Benefits
Iowa’s state income-tax credit for residential solar isn’t available for systems installed after 2021. Here’s what Worth 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 Energy, Heartland Power Cooperative, Grafton Municipal Electric, and Prairie Energy Cooperative each credit solar exports differently — we confirm which applies to your exact address.
Worth County Solar FAQ
Does SolQ serve all of Worth County, or just Northwood and Manly?
All of it. Manly is our most established market with real installs on record, but SolQ installs residential solar throughout the county — Northwood, Fertile, Kensett, Grafton, Joice, Hanlontown, and every rural address in between. This page covers the whole county, not just the biggest towns.
Does SolQ have a dedicated page for Northwood or Manly?
Not yet. No Worth County community has crossed the population threshold SolQ uses for its own standalone city page — Northwood, the largest, sits at 2,072 residents. This countywide page is the right place to start for any Worth County address.
What electric utility serves my home in Worth County?
Alliant Energy is the dominant provider countywide, with an estimated 10,460 customers — roughly 90% of Worth County’s electric accounts, per findenergy.com — serving Northwood, Manly, and Fertile. Heartland Power Cooperative reaches an estimated 968 rural customers, Grafton Municipal Electric serves Grafton itself with about 168 customers, and Prairie Energy Cooperative covers roughly 43 additional rural accounts. We confirm your exact provider before designing your system.
How does Alliant Energy credit my solar production?
Alliant credits solar production one of two ways depending on your account: its standard inflow-outflow tariff (Rate IO), which values energy you send to the grid separately from what you use, or — for customers who still qualify — a net-metering pilot tariff (Rate NM) that offers a more favorable 1:1 credit. We check which one applies to your account before you sign anything. Full detail is on our dedicated Alliant Energy solar page.
What about Heartland Power Cooperative, Grafton Municipal Electric, and Prairie Energy Cooperative?
All three are real providers with a genuine footprint outside Alliant’s territory. Per findenergy.com, Heartland Power Cooperative — headquartered in nearby Thompson, IA — serves an estimated 968 county customers; Grafton Municipal Electric is Grafton’s own community-owned utility with about 168 customers and sets its own interconnection rules rather than a state-regulated tariff; and Prairie Energy Cooperative reaches roughly 43 rural accounts. Each runs its own crediting rules, distinct from Alliant’s. We confirm which provider serves your address before designing 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), part of how they can offer $0-down payments below what you’re currently paying your utility. We’ll walk you through what applies to you during your free consultation.
Are there Worth County-specific permitting requirements?
Yes, and they vary by town. Northwood, Manly, and Worth County’s other incorporated towns each run their own permitting process, separate from the county’s rules for unincorporated areas. We handle the paperwork and file the interconnection application with your utility, so you don’t have to sort out which office to call.
How long does a Worth 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 town’s permitting timeline and your utility’s interconnection queue. We give you a realistic timeline up front.
Has SolQ actually completed solar installs in Worth County?
Yes — 4 completed residential installs in Manly, all connected through Alliant Energy, with real street-level and system-size detail on record. We don’t yet have a completed install specifically inside Northwood, Fertile, Kensett, Grafton, Joice, or Hanlontown, and we say so directly rather than implying otherwise.
How does snow affect solar production in a Worth County winter this close to Minnesota?
Worth County sits directly on the Iowa–Minnesota border, about as far north as Iowa solar gets — genuine winter territory. Panels are engineered for that seasonal range: steep-mount racking sheds snow faster than a roof’s own pitch, and panels typically clear themselves within a day or two of a storm as they warm in the sun. Production dips in December and January and climbs sharply in spring and summer, which your system design accounts for from the start.
Built for Worth County and Iowa’s Northern Edge
Whether you’re in Northwood, Manly, or a smaller Worth County town, SolQ designs your system around your actual roof, your actual utility, and Iowa’s actual winters — not a generic template.
Get My Free Solar AnalysisSolQ is an independent solar provider and is not affiliated with Alliant Energy, Heartland Power Cooperative, Grafton Municipal Electric, Prairie Energy Cooperative, the Top of Iowa Welcome Center, 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.