Polk County is served by three different utilities — Duke Energy Florida, TECO, and Lakeland Electric — each with distinct solar policies. Knowing which serves your home matters before estimating savings.
Polk County is a genuine three-way utility split, and that single fact changes your solar math more than anything else on this page. Duke Energy Florida is the primary provider across much of the county at about 15.8 cents per kilowatt-hour, the municipal utility Lakeland Electric serves Lakeland at roughly 14.9 cents, and Tampa Electric covers western edges of the county at around 16.5 cents. Each one sets its own export credit rules and monthly charges, so a quote built on the wrong utility will misstate your savings. Sun resource is consistent countywide at roughly 4.2 effective peak sun hours per day, already adjusted for real-world system losses. Start by reading the provider name on your bill, divide the total charge by the kilowatt-hours used, and enter that rate in the calculator below.
Find out how much you can save based on your location and current energy usage.
Most Florida solar content assumes FPL. Polk County has three utilities with meaningfully different rate structures and solar policies. The right starting point is knowing who your utility is.
Duke Energy Florida offers 1:1 net metering at full retail rate per Florida PSC Rule 25-6.065. Every kilowatt-hour you export earns a credit at the same rate you pay to buy electricity, with monthly rollover of surplus credits.
At the end of the annual billing period, any remaining surplus is settled at the non-firm wholesale rate — roughly 2 cents/kWh, far below retail. Right-size your system to your annual consumption to avoid large year-end surplus at that lower rate.
No Duke Energy cash rebate is available. The standard Florida 7–9 year payback range is a reasonable estimate for Duke customers.
TECO (Tampa Electric Company) offers 1:1 retail-rate net metering for residential systems up to 10 kW — the same favorable crediting structure as FPL and Duke Energy. Every exported kilowatt-hour earns a credit at the full rate you pay.
TECO does not offer a direct cash rebate for residential solar (unlike JEA in Duval County, which offers up to $4,000). The financial case rests on net metering value plus Florida's statewide property and sales tax exemptions.
The standard Florida 7–9 year payback range applies reasonably for TECO customers in Polk County.
Lakeland Electric is a municipal utility — owned and operated by the City of Lakeland — and it sets its own rates and solar policies independently of Florida's investor-owned utilities. This matters because its solar buyback structure may differ from what most online calculators and installers assume.
Public information on Lakeland Electric's current residential solar net metering is inconsistent: some sources describe standard full-retail-rate net metering, while Lakeland Electric rate documents reference a separate "Value of Solar Credit" tied to demand-charge-based pricing plans — a fundamentally different model than simple 1:1 net metering. Municipal utilities like JEA (Jacksonville) and OUC (Orlando) have both changed their solar policies in recent years, and Lakeland Electric can do the same by city ordinance.
If you are a Lakeland Electric customer, contact Lakeland Electric directly at lakelandelectric.com or request your current residential solar interconnection tariff before assuming standard 1:1 net metering economics apply. The payback period and savings estimate you receive from a solar installer should reflect your actual credit rate — not an assumption.
No utility cash rebate has been confirmed for residential solar from Duke Energy or TECO in Polk County. Lakeland Electric customers should verify their specific situation directly.
Florida's two statewide incentives apply regardless of which utility serves your home: the 100% property tax exemption on solar-added home value and the 6% sales tax exemption on solar equipment purchases (saving $1,200–$1,800 on a typical system).
The 30% federal residential solar tax credit (Section 25D) expired December 31, 2025 — not available for systems installed in 2026 or later.
No specific PACE (Property Assessed Clean Energy) approval for Polk County has been confirmed in our research. Florida requires county-by-county legislative approval, and not every county has opted in.
Check the current service map at floridapace.gov to see whether PACE is available at your specific address.
If PACE is available, the assessment takes lien priority ahead of your existing mortgage. Review the full terms with your lender before signing.
Florida has no state income tax credit, but it offers powerful property and sales tax exemptions for solar installations that significantly improve your ROI.
100% exemption from increased property taxes. Adding solar increases your home's value, but Florida law prevents that added value from increasing your property tax bill.
FL Dept of Revenue6-7.5% savings on equipment. Solar energy systems are completely exempt from Florida's sales and use tax, saving you thousands upfront on the purchase price.
Florida Solar Energy CenterNote: These exemptions apply to purchased or financed systems. Leased systems (PPAs) do not qualify for these specific homeowner tax exemptions.
Polk County is split among three different utilities: Duke Energy Florida, TECO (Tampa Electric Company), and Lakeland Electric. Each has its own rate schedule, net metering policy, and solar rules — and those differences materially affect how much solar can save you and how quickly it pays back. The only reliable way to know which utility serves your home is to check your electric bill or call your utility directly. Do not assume any of the three applies to your address.
Duke Energy Florida offers 1:1 net metering at the full retail rate per Florida PSC Rule 25-6.065. Every kilowatt-hour your panels export earns a credit at the same rate you pay to buy electricity. Excess monthly credits roll over month to month. At the end of the annual billing period (typically January), any remaining surplus is settled at the non-firm wholesale rate — approximately 2 cents/kWh, which is much lower than retail. Right-size your system to your annual usage to avoid large year-end surplus that is valued at wholesale. Duke Energy does not offer a direct cash rebate for residential solar in Polk County.
TECO (Tampa Electric Company) offers 1:1 retail-rate net metering for residential solar systems up to 10 kW. Surplus generation earns credits at the same rate you pay for electricity. This is the same favorable structure Duke Energy and FPL offer, and it stands in contrast to JEA in Duval County, which credits exports at only 3–4 cents/kWh. TECO does not offer a direct cash rebate for residential solar. The financial case rests on net metering value plus Florida's property and sales tax exemptions.
Lakeland Electric is a municipal utility — owned and operated by the City of Lakeland — meaning it sets its own rates and solar policies independent of Florida's investor-owned utilities (Duke, TECO, FPL). This matters because its solar policies can differ from what most solar installers and online calculators assume. Public information on Lakeland Electric's current residential solar net metering structure is inconsistent: some sources describe standard full-retail-rate net metering, while Lakeland Electric rate documents reference a separate 'Value of Solar Credit' tied to demand-charge-based pricing plans — a different model than simple 1:1 net metering. Rather than state a specific credit rate we cannot verify is current, the honest guidance is this: if you are a Lakeland Electric customer, contact Lakeland Electric directly at lakelandelectric.com or request your current residential solar interconnection tariff before assuming standard net metering economics apply. Municipal utilities like JEA (Jacksonville) and OUC (Orlando) have both changed their solar buyback structures in recent years — Lakeland Electric can do the same via city ordinance.
No utility cash rebate has been confirmed for residential solar from Duke Energy Florida or TECO in Polk County. The financial case for Duke and TECO customers rests on 1:1 net metering, Florida's 100% property tax exemption on solar-added home value, and the 6% Florida sales tax exemption on equipment purchases. Lakeland Electric customers should verify their specific credit structure directly before estimating savings or financial incentives. The 30% federal residential solar tax credit (Section 25D) expired December 31, 2025 and is not available for systems installed in 2026 or later.
No specific PACE (Property Assessed Clean Energy) approval for Polk County has been confirmed in our research. Florida requires county-by-county legislative approval for residential PACE programs, and not every county has opted in. Check the current service map at floridapace.gov to see whether PACE financing is available at your specific Polk County address. Important: if PACE is available, the assessment takes lien priority ahead of your existing mortgage — review the full terms carefully with your lender before signing.
For Duke Energy Florida and TECO customers in Polk County, the validated Florida average payback range of 7–9 years for cash or loan purchases is a reasonable starting estimate, given that both utilities offer 1:1 net metering and neither offers a utility cash rebate. For Lakeland Electric customers, you should get a definitive answer on your current solar credit rate from Lakeland Electric directly before estimating payback — if the credit rate is significantly below retail, the payback period will be longer than the Duke/TECO range. No 30% federal tax credit is available for 2026 installations (Section 25D expired December 31, 2025), so any contractor estimate should reflect that.
Two Florida-wide incentives apply regardless of which of the three utilities serves your home: (1) The 100% property tax exemption — the added home value from a solar installation is completely exempt from Florida property tax assessment. (2) The 6% Florida sales tax exemption on solar equipment purchases, which saves $1,200–$1,800 on a typical $20,000–$30,000 system. These apply statewide and are not dependent on your utility. The 30% federal residential solar tax credit (Section 25D) expired December 31, 2025 and is not available for systems installed in 2026 or later.
DISCLAIMER: All estimates are approximations based on regional averages. Actual savings vary by location, roof orientation, utility provider, and installer. This calculator does not guarantee specific savings.