Mississippi Geothermal Heat Pump Guide (2026): Costs, Incentives & What You Need to Know

Mississippi doesn't get talked about much in the geothermal conversation. The state ranks near the bottom in adoption, has no state-level incentive, and most of the HVAC industry here is still oriented around conventional gas furnaces and central AC. But the fundamentals tell a different story.

At 10.93¢/kWh (EIA 2024, rank 33 — among the cheapest in the nation) and ground temperatures of 62–68°F, Mississippi has naturally warm earth that makes geothermal heat pumps exceptionally efficient — especially in cooling mode, which is what matters most here. The state averages 1,800–2,500 cooling degree days depending on region. Your AC runs seven to nine months of the year. And every summer, when it's 95°F with 85% humidity outside, a conventional AC unit is struggling to reject heat into that miserable air while a geothermal system calmly dumps it into 65°F ground.

Then there's the Gulf Coast. Biloxi, Gulfport, Pascagoula — hurricane country. Every outdoor condenser is vulnerable. Every storm season is a gamble. A geothermal system buries its heat exchanger underground, out of the wind's reach. After Katrina, after Zeta, after Ida — the homeowners without outdoor condensers had one fewer thing to replace.

And then there's the Mississippi Delta — that vast, flat alluvial plain with the deepest, softest soil in the country. Horizontal ground loops go in fast and cheap. A 3-ton slinky system can be installed for under $20,000. The catch: the Delta also has the lowest household incomes in the state. The math works, but the money doesn't always exist.

This guide covers all of it — region by region, dollar by dollar, with honest assessments of where geothermal makes sense and where it doesn't in Mississippi.

By Sarah Chen, Energy Policy Analyst · Updated March 21, 2026

Should You Install Geothermal in Mississippi?

The pattern is consistent across the Deep South: propane homes, new construction, and hurricane-exposed coastal properties are the strongest candidates. Natural gas homes — particularly in the Jackson, Hattiesburg, and Tupelo metros — face the same brutal math as Louisiana and Alabama: gas is cheap, winters are mild, and the annual savings gap is too small to justify a $20,000+ investment purely on economics.

Mississippi Geothermal Costs by Region

Installation costs vary significantly across Mississippi's five distinct regions, driven by geology, water table depth, and installer availability.

Cost estimates based on 2024–2025 regional installer data. Actual costs vary by property, loop type, and system brand. Verified March 2026.

The Delta advantage: The Mississippi Delta — that flat, alluvial plain stretching from Vicksburg to Memphis — has some of the easiest ground loop installation conditions in the country. Deep, soft soil. No rock. Flat terrain. A horizontal slinky system goes in fast and cheap: $17,000–$22,000 for a 3-ton system. The catch is that the Delta also has the lowest household incomes in Mississippi (and the nation), making the upfront cost a barrier even when payback math is favorable.

Gulf Coast premium: Coastal installations run 10–15% above state average due to high water table (2–8 feet in many areas), vertical loop requirements, and coastal building code compliance. However, this premium buys hurricane resilience that has tangible financial value — see the hurricane section below.

Case Study 1: Rankin County Propane Home

Case Study 2: DeSoto County New Construction

Monthly Energy Profile: Rankin County Propane Home

Propane at $2.85/gallon. Electric at 10.93¢/kWh (EIA 2024, verified March 2026). Mississippi's cooling season runs March through October in central/southern regions. Desuperheater savings ($220/year) not shown in monthly breakdown — applied separately. Total savings with desuperheater: ~$1,675/year. Summer months show modest savings because Mississippi electricity is cheap; the big wins are winter propane displacement.

The seasonal pattern: Mississippi geothermal economics are winter-weighted for propane homes. January alone saves $295 — nearly 20% of total annual savings. Summer savings are real but modest because you're replacing cheap electricity with slightly cheaper electricity (higher COP, but same fuel). This is the inverse of northern states where winter heating dominates even more dramatically.

Mississippi Geology by Region

Understanding your ground conditions determines which loop type works — and what it costs.

Mississippi Delta (Western MS)

Deep alluvial deposits from millennia of Mississippi River flooding. 100–500+ feet of unconsolidated sand, silt, clay. Horizontal loop paradise — flat, deep, soft soil, easy to trench. Thermal conductivity is good (1.0–1.4 BTU/hr·ft·°F) due to moisture retention. The water table varies: 5–15 feet in lowlands (may require vertical), deeper on terraces above the floodplain where horizontal works fine.

Drilling note: The Mississippi Alluvial Plain aquifer — one of the largest in the U.S. — underlies this entire region. Irrigation wells are everywhere. Drillers are experienced with the geology. Ground loop drilling in unconsolidated sediment is fast and relatively cheap.

Piney Woods (South-Central MS)

Tertiary-age sand, clay, and gravel — the longleaf pine belt stretching from Hattiesburg to Meridian. Mixed soils with generally adequate depth for horizontal loops on larger lots. Sand content means slightly lower thermal conductivity (0.8–1.2 BTU/hr·ft·°F) in dry periods, but Mississippi's 52–60 inches of annual rainfall generally keeps soil moisture adequate year-round.

Gulf Coast (Biloxi/Gulfport/Pascagoula)

Coastal plain sediments with a high water table (2–8 feet in many areas). Vertical closed-loop is the standard — horizontal loops sit in saturated soil and can shift during seasonal water table fluctuation. The wet, clay-rich coastal soil has excellent thermal conductivity for vertical loops (1.2–1.6 BTU/hr·ft·°F). Storm surge flooding doesn't affect buried loops but can damage indoor equipment in low-lying structures — elevate the indoor unit above base flood elevation.

Northeast Mississippi Hills (Tupelo/Columbus)

The closest Mississippi gets to Appalachian geology. Cretaceous-age chalk, clay, and sandstone (the Black Prairie and Tombigbee Hills). Shallower bedrock than the rest of the state — some areas hit limestone at 10–30 feet, which may favor vertical loops drilled into rock. TVA territory with potentially different utility economics. The Tennessee-Tombigbee Waterway corridor has deeper alluvial deposits that may allow horizontal loops.

Loess Bluffs (Vicksburg/Natchez Corridor)

Wind-deposited loess (fine silt) caps the river bluffs, 30–80 feet thick in places. Below: Tertiary sands and clays. Loess has decent thermal conductivity when moist (1.0–1.3 BTU/hr·ft·°F) but can erode rapidly if exposed. Horizontal trenches in loess should be properly backfilled and compacted to prevent erosion channels. The bluff-top properties along the Natchez Trace have dramatic topography that may complicate horizontal layouts — vertical is often simpler.

Ground temperatures across Mississippi:

Ground temperatures from NOAA/USGS data. HDD/CDD from NOAA climate normals.

Open-Loop Geothermal Viability by Region

Mississippi Department of Environmental Quality (MDEQ) oversees water well permits through the Environmental Compliance Division. Open-loop systems require well registration and may require discharge monitoring depending on return method (surface discharge vs. injection well). Injection wells trigger additional Underground Injection Control (UIC) permit requirements. Given the aquifer protection concerns across most of the state, closed-loop systems are the recommended approach for Mississippi.

Permitting and Regulations

Mississippi does not have geothermal-specific permit requirements, but ground loop installations intersect with several regulatory areas:

Well Drilling (Vertical Loops)

• Authority: MDEQ Environmental Compliance Division and Mississippi State Board of Registered Professional Geologists
• Requirement: Licensed well driller required for all borings exceeding 25 feet
• Registration: Well completion report must be filed with MDEQ within 60 days
• Estimated fee: $50–$150 registration fee per well; driller handles filing
• Timeline: No pre-approval required for closed-loop residential systems; file completion report after installation

Open-Loop Systems

• Water well permit: Required from MDEQ for any water well
• Discharge permit: Surface discharge of return water may require NPDES permit from MDEQ Surface Water Division
• Injection well: If returning water underground, UIC permit required (Class V injection well)
• Timeline: 30–90 days for permit review depending on location and discharge method
• Recommendation: Due to permitting complexity, most Mississippi installers prefer closed-loop systems

Local Building Permits

• Mechanical permit: Required in Jackson, Gulfport, Biloxi, Hattiesburg, and most incorporated municipalities
• Fee: Typically $75–$250 depending on jurisdiction
• Inspection: Mechanical inspection required before system startup in most municipalities
• Rural counties: Many unincorporated areas of Mississippi do not require mechanical permits — check with your county building department

Coastal Zone (Harrison, Hancock, Jackson Counties)

• Gulf Coast installations within the Mississippi Coastal Zone may require additional review under the Mississippi Coastal Program
• Setback requirements from wetlands and tidal waters apply to trenching and drilling

Verified March 2026 against MDEQ regulations and Mississippi State Board of Contractors licensing requirements.

Loop Type Cost Comparison

The catfish pond question: Mississippi is the #1 catfish-producing state, with thousands of aquaculture ponds across the Delta. Commercial catfish ponds are typically 4–6 feet deep — below the 8-foot minimum for reliable geothermal heat exchange. However, deeper recreational ponds, stock ponds, and multipurpose irrigation ponds on farm properties can work excellently. The thermal exchange coils in a properly designed pond-loop system won't meaningfully affect water temperature or quality in an adequately sized body of water (minimum ½ acre surface area per residential ton), but professional thermal assessment is required. Don't use your active catfish production pond — use a separate water feature.

Farm pond advantage: Mississippi's rural landscape is dotted with thousands of non-commercial ponds built for livestock watering, irrigation reserve, and recreation. These are geothermal gold — a pond loop system at $8,000–$14,000 is dramatically cheaper than vertical drilling, and the installation is non-invasive (coils are weighted and sunk to the bottom, no trenching or drilling required). If you have a pond that's at least ½ acre and 8 feet deep, get a pond-loop quote.

Mississippi Incentives and Incentive Stacking

Mississippi has no state-level geothermal incentive. The federal credit does the heavy lifting.

Incentive data last verified March 2026. [NV] = Needs Verification — contact utility directly for current program details. Federal credit confirmed via IRS Publication 5797 and IRC §25D.

Best-case Mississippi incentive stacking (farm/ranch with REAP):

At 50% REAP (competitive grant — higher awards are possible): net drops to $5,000 — a 75% cost reduction.

Best-case non-farm stacking (TVA territory, if rebate available):

For most Mississippi homeowners outside TVA territory: the federal 30% credit is effectively the only incentive. Net cost for a typical system: $14,700–$29,400.

USDA REAP: Mississippi's Most Powerful Geothermal Tool

Mississippi has 34,700 farms covering 10.4 million acres. Agriculture contributes $7.9 billion annually. Major sectors: poultry (#5 nationally), catfish (#1), cotton, soybeans, forestry. If you operate a farm, ranch, or rural small business, REAP is the single most impactful geothermal incentive available in Mississippi.

Example: Humphreys County catfish farmer

• 2,000 sq ft farmhouse, propane heat ($2,200/year), window AC units ($500/year)
• 3-ton horizontal slinky: $19,000 (Delta soil — cheap installation)
• REAP grant (25%): -$4,750
• Federal tax credit (30% of $14,250): -$4,275
• Net cost: $9,975
• Annual savings: $1,900
• Payback: 5.2 years

At 50% REAP: net $4,750 → payback 2.5 years.

Example: Neshoba County poultry operation

• 2,400 sq ft farmhouse, aging electric heat pump (8 SEER), $2,800/year HVAC
• 3.5-ton vertical loop: $26,000 (NE hills geology)
• REAP grant (25%): -$6,500
• Federal tax credit (30% of $19,500): -$5,850
• Net cost: $13,650
• Annual savings: $1,400
• Payback: 9.8 years

At 50% REAP: net $7,150 → payback 5.1 years.

USDA REAP information verified March 2026 via rd.usda.gov. Mississippi USDA State Office contact confirmed.

How to Claim the Federal Geothermal Tax Credit in Mississippi

Federal tax credit information verified March 2026 via IRS Publication 5797 and IRC §25D.

Hurricane Resilience: The Gulf Coast Factor

Mississippi's Gulf Coast took a direct hit from Hurricane Katrina in 2005 — the most expensive natural disaster in American history at the time. Since then: Gustav (2008), Isaac (2012), Zeta (2020), Ida (2021). Every major storm season puts thousands of outdoor AC condensers at risk along the coast.

The geothermal advantage:

• Ground loop buried 6–200 feet: hurricane-proof. Period. No wind, no surge, no debris reaches it.
• No outdoor condenser to destroy: eliminates the most commonly damaged — and expensive — HVAC component in hurricane events
• Immediate operation after power restoration: no waiting for an HVAC contractor (post-hurricane waits stretch months as every condenser in the county needs replacement simultaneously)
• Insurance claim avoidance: every avoided HVAC insurance claim keeps your premiums from rising
• Flood damage limitation: even if your house floods, the ground loop is fine. Only the indoor unit needs attention, and it can be elevated above base flood elevation during installation

Factoring resilience into payback: If you budget for replacing an outdoor AC condenser once per decade due to storm damage ($5,000–$8,000 per event including installation), that's $500–$800/year in expected storm replacement costs. Adding this avoided cost to the annual savings calculation compresses Gulf Coast geothermal payback by 2–3 years.

A 12-year payback drops to 9 years when you account for one avoided condenser replacement.

This isn't speculative — it's actuarial. The Mississippi Gulf Coast averages a significant tropical weather event every 3–4 years. Not every event destroys your condenser, but the cumulative probability over a 25-year system life is high.

The Humidity Advantage: Mississippi's Hidden Geothermal Benefit

Mississippi's humidity is legendary — 75–90% relative humidity is normal from May through September. Conventional air conditioning handles humidity poorly, especially when oversized (a common Mississippi sin).

Why geothermal handles Mississippi humidity better:

1. Longer run cycles: Geothermal systems are designed to run longer, steadier cycles than conventional AC. This extended run time pulls more moisture from the air per cooling cycle. Conventional oversized AC units short-cycle — they cool the air temperature quickly but shut off before removing adequate moisture, leaving you with cold-but-clammy air.

2. Consistent capacity: A conventional AC condenser loses capacity as outdoor temperatures climb (working harder when you need it most). A geothermal system exchanges heat with 64–68°F ground regardless of outdoor conditions. At 95°F outside, your conventional AC might deliver 80% of rated capacity. Your geothermal system delivers 100%.

3. Desuperheater bonus: The desuperheater (which pre-heats domestic hot water using waste heat from the cooling cycle) runs more efficiently in cooling-dominant climates. In Mississippi, where the system is in cooling mode 7–9 months per year, you get more free hot water than someone in Minnesota.

Many Mississippi geothermal owners report their most noticeable quality-of-life improvement isn't the lower bills — it's the drier, more comfortable indoor air and reduced dehumidifier use.

Maintenance and System Longevity in Mississippi

Mississippi's warm, humid climate has specific implications for geothermal system maintenance:

Annual Maintenance Checklist

• Filter change: Every 3–6 months (more frequently in Mississippi's pollen-heavy spring)
• Coil cleaning: Annual indoor coil inspection and cleaning — Mississippi humidity promotes biological growth on evaporator coils
• Condensate drain: Check and flush condensate drain line at least twice per year (spring and fall) — Mississippi's extended cooling season means more condensate production, and algae growth can clog drain lines
• Desuperheater: Flush desuperheater heat exchanger annually if water hardness exceeds 10 grains/gallon
• Loop pressure: Annual check of ground loop pressure and antifreeze concentration (closed-loop systems)
• Air handler: Inspect blower motor, electrical connections, and thermostat calibration annually

Expected Lifespan (Mississippi Climate)

Warranty note: Most major manufacturers (WaterFurnace, ClimateMaster, Bosch) offer 5–10 year parts warranties. Extended warranties to 10 years on compressors are common. WaterFurnace's Symphony platform includes remote monitoring — valuable when your nearest geothermal technician might be 100 miles away in rural Mississippi.

Finding a Geothermal Installer in Mississippi

Mississippi has limited geothermal installer options compared to northern states where adoption is higher. This is the biggest practical barrier to geothermal in Mississippi — not the technology or the economics, but finding someone qualified to install it.

Where to Look

1. IGSHPA Contractor Directory (igshpa.org) — Search for Mississippi; results are limited but include certified professionals and equipment distributors serving the state
2. WaterFurnace Dealer Locator (waterfurnace.com) — WaterFurnace has a dealer network with coverage in Mississippi
3. ClimateMaster Dealer Locator (climatemaster.com) — ClimateMaster is Oklahoma-based; their southern dealer network may include Mississippi contractors
4. Bosch HVAC Contractor Search — Bosch Geo line is growing; check their contractor finder

Regional Installer Access

Vetting Your Installer

• IGSHPA certification is the gold standard — ask for the installer's IGSHPA Accredited Installer card
• Experience threshold: Ask how many geothermal systems they've installed in the last 3 years. Below 10 is a concern.
• Mississippi contractor license: Verify active license at the Mississippi State Board of Contractors — HVAC residential license required
• References: Ask for 3 local geothermal references. Call them. Ask about comfort, bills, and any issues in the first year.
• Loop subcontractor: Many HVAC companies subcontract the ground loop drilling. Ask who drills the loops and verify their well-drilling credentials with MDEQ.

Getting 3 quotes may require patience in Mississippi. Expect to contact 5–8 companies to find 3 willing to quote a geothermal project. Some may need to travel 50–150 miles. Factor travel charges into your comparison.

Solar + Geothermal Stacking in Mississippi

Mississippi gets 4.5–5.2 peak sun hours per day — strong solar resource. The Mississippi Public Service Commission allows net metering for systems up to 100% of customer's electricity consumption.

Jackson area combined system example:

• Annual energy savings (geothermal + solar): ~$2,500–$3,000
• Combined payback: ~11–13 years
• After year 13: near-zero energy bills

The cooling-solar synergy: Peak solar generation (summer midday) coincides with peak geothermal cooling demand (summer afternoon). This maximizes solar self-consumption — your geothermal system runs on your own solar electricity during the exact hours you're producing the most. In Mississippi's cooling-dominant climate, this alignment is stronger than in northern states.

Net metering note: Mississippi's net metering rules allow 1:1 credit for exported solar power up to your annual consumption. However, Entergy Mississippi has pushed back on distributed solar policies. Check current net metering availability with your utility before designing a combined system.

Vacation Rental and Seasonal Property Analysis

Mississippi's tourism niches that align with geothermal:

Gulf Coast (Biloxi/Ocean Springs/Bay St. Louis): The Mississippi Gulf Coast has a growing vacation rental market. Hurricane resilience is a genuine marketing differentiator — "storm-proof HVAC" matters to renters and property managers who've experienced post-hurricane situations where properties sit idle for months waiting for HVAC replacement. Coastal properties needing vertical loops will pay more upfront but the resilience value is real.

Natchez/Vicksburg (River Road): Historic antebellum properties with huge floor plans and terrible insulation. HVAC costs for a 4,000+ sq ft historic home can exceed $5,000/year. Geothermal can transform those economics while preserving the property's exterior appearance (no visible outdoor unit). The historic district aesthetic benefit — no condenser pad next to your 1850s home — has genuine value for tourism properties.

Oxford/Holly Springs (North Mississippi Hills): University of Mississippi brings year-round demand for short-term rentals. Ole Miss game-day properties heat with a mix of propane and gas. Propane properties in rural Lafayette County are geothermal candidates. Year-round occupancy from students and academics means the system runs efficiently across all seasons.

Ross Barnett Reservoir Area: Jackson metro's lake district. Lakefront properties may have pond-loop opportunities if the adjacent water body meets depth and size requirements. Weekend getaway market from Jackson, Memphis, and Birmingham.

Eco-tourism markup: A "geothermal-heated, hurricane-resistant" vacation rental commands a premium in the conscious traveler segment. Green certifications and sustainability branding are becoming standard in the Gulf Coast tourism recovery narrative.

The Affordability Question

Mississippi has the lowest median household income in the nation ($52,985 as of 2023 ACS data). This creates a unique challenge for geothermal adoption: the economics may work on paper, but the upfront capital doesn't exist for many homeowners who would benefit most.

Strategies for Mississippi's affordability gap:

1. USDA REAP — covers up to 50% for qualifying farms and rural businesses, dramatically lowering the barrier. Mississippi's agricultural economy means a huge percentage of rural homeowners qualify.

2. Electric cooperative financing — some Mississippi electric co-ops offer low-interest loans or on-bill financing for efficiency upgrades. Contact your co-op directly — the 25 Mississippi co-ops have varying programs.

3. Tax credit carry-forward — the federal credit carries forward indefinitely, so even if your tax liability is low in the installation year (common for lower-income Mississippi households), you'll capture the full value over multiple years.

4. New construction integration — the incremental cost over conventional HVAC ($5,000–$10,000 after credit) is far more accessible than a $17,000–$30,000 full retrofit. If you're building, this is the time.

5. Manufacturer financing — WaterFurnace and ClimateMaster both offer consumer financing programs through third-party lenders. Terms vary: typically 5–15 year loans at 4–8% APR. Monthly payment often approximates monthly energy savings, creating a near-cash-flow-neutral transition.

6. Property Assessed Clean Energy (PACE) — Mississippi does not currently have a residential PACE program, but commercial PACE may be available in some jurisdictions. Monitor legislative developments.

7. Habitat for Humanity and community development — some Mississippi Habitat affiliates have incorporated geothermal into new construction. The long-term operating cost reduction helps low-income homeowners maintain affordable housing.

The systemic challenge: Mississippi's lowest-income homeowners — particularly in the Delta, where horizontal loops are cheapest — would benefit most from geothermal but have the least access to capital. Federal programs like REAP help for agricultural properties, but there's no equivalent for non-farm low-income households beyond the tax credit (which requires tax liability to capture). This is a policy gap, and we note it honestly.

The Honest Gas Assessment

Mississippi has natural gas infrastructure across most metro areas and many smaller towns. Rates are moderate, and the mild winters mean gas heating costs are already low.

The math for a Jackson gas home (2,200 sq ft):

• Average gas heating cost: ~$500–$800/year (mild winters, 2,400 HDD)
• Conventional AC cost: ~$900–$1,300/year
• Total HVAC: ~$1,400–$2,100/year
• Geothermal total: ~$900–$1,300/year
• Annual savings: $400–$800
• Net system cost after credit: $14,700–$21,700
• Payback: 18–55 years

Not compelling for most gas homes. We'd be dishonest if we told you otherwise.

Geothermal in Mississippi is a propane/electric replacement story, a new construction story, and a hurricane resilience story — not a gas conversion story. If you heat with natural gas in Jackson, Hattiesburg, or Tupelo, your money is better spent on air sealing, insulation, and a high-efficiency heat pump or mini-split system.

The exceptions:

• Gas home in hurricane zone (Gulf Coast) where resilience has tangible value
• Gas home being gutted/renovated where HVAC replacement is happening anyway
• Gas home where the homeowner has strong environmental motivation beyond pure economics

Mississippi vs. Neighboring States

Mississippi vs. neighbors — the honest comparison:

• Alabama shares the same Deep South economics but has a TVA territory advantage in the northeast where utility rebates may exist. Alabama's slightly higher electricity rate means slightly better geothermal economics. Mississippi's Delta horizontal loop advantage is unique regionally.

• Louisiana has the cheapest electricity in the region (8.80¢), making geothermal savings margins even thinner. But Louisiana's extreme hurricane exposure (New Orleans, coastal parishes) makes the resilience argument even stronger than Mississippi's.

• Tennessee has the best geothermal economics of the group thanks to higher electricity rates and extreme propane prices in East Tennessee. TVA EnergyRight rebates further improve Tennessee's position.

• Arkansas has similar economics to Mississippi but lacks the hurricane resilience angle. Arkansas's Ozark region has strong propane-replacement potential similar to Mississippi's Delta.

Mississippi's unique position: The Delta's cheap horizontal loops and the Gulf Coast's hurricane resilience value create two distinct geothermal markets that neighboring states don't fully replicate. The affordability barrier, however, is more acute in Mississippi than in any neighboring state.

Video Content

Frequently Asked Questions

Get Started

Ready to explore geothermal for your Mississippi home or farm?

1. Determine your water table depth — this dictates horizontal vs. vertical (your county USGS well data or a local driller can help)
2. Gather 12 months of fuel costs — propane receipts, gas bills, electric bills (especially summer cooling costs)
3. Check your utility — Entergy Mississippi, Mississippi Power, TVA distributor, or your co-op may have programs
4. Farmers and rural businesses — contact the USDA Mississippi State Office about REAP before installation (Phone: 601-965-4316)
5. Get 3 quotes from IGSHPA-certified installers — expect to contact 5–8 companies in Mississippi's limited installer market

Sources

1. U.S. Energy Information Administration — Mississippi Electricity Profile 2024 (10.93¢/kWh residential average, 794 lbs CO₂/MWh). eia.gov/electricity/state/mississippi/
2. IRS Publication 5797 — Residential Clean Energy Credit (IRC §25D), 30% through 2032. irs.gov
3. USDA Rural Development — Rural Energy for America Program (REAP). rd.usda.gov
4. USDA Mississippi State Office — 100 W. Capitol St., Suite 831, Jackson, MS 39269. (601) 965-4316.
5. USDA National Agricultural Statistics Service — Mississippi farm count (34,700 farms, 10.4 million acres).
6. Mississippi Department of Environmental Quality — Groundwater Assessment and Remediation Division. mdeq.ms.gov
7. Mississippi State Board of Contractors — Contractor license verification. msboc.us
8. IGSHPA International Ground Source Heat Pump Association — Contractor directory. igshpa.org
9. NOAA National Climatic Data Center — Mississippi climate normals, HDD/CDD data.
10. U.S. Census Bureau — American Community Survey 2023, Mississippi median household income ($52,985).
11. Tennessee Valley Authority — EnergyRight program. energyright.com
12. NOAA Hurricane Research Division — Gulf Coast hurricane frequency data (Katrina 2005, Gustav 2008, Isaac 2012, Zeta 2020, Ida 2021).
13. Mississippi Public Service Commission — Net metering rules for distributed generation.
14. USGS — Mississippi Alluvial Plain aquifer studies and well log data.
15. Mississippi State University Extension Service — Agricultural energy efficiency resources and REAP application assistance.

Related Reading

• How Geothermal Heat Pumps Work — the fundamentals of ground-source heating and cooling
• Geothermal Payback Period: State-by-State Analysis — where Mississippi fits nationally
• Horizontal vs. Vertical Ground Loops — which loop type fits your Mississippi property
• Federal Geothermal Tax Credit Guide — claiming the 30% credit step by step
• Alabama Geothermal Guide — your neighbor to the east, with TVA territory overlap
• Louisiana Geothermal Guide — your neighbor to the west, with similar Gulf Coast dynamics
• Tennessee Geothermal Guide — your neighbor to the north, with TVA rebate programs
• Arkansas Geothermal Guide — your neighbor to the northwest, similar propane replacement market
• Florida Geothermal Guide — similar Gulf Coast cooling-dominant market
• Geothermal vs. Propane Heating — the comparison that matters most in rural Mississippi

Last updated March 21, 2026. Electricity rates from EIA 2024 data (10.93¢/kWh, rank 33). CO₂ emissions: 794 lbs/MWh (EIA 2024). Federal tax credit confirmed through 2032 via IRC §25D. No state incentive programs identified. USDA REAP confirmed via rd.usda.gov. Hurricane data from NOAA. Mississippi median household income from Census ACS 2023. Ground temperatures from NOAA/USGS.