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Solar and renewable energy guides
Learn how solar ROI, payback, panel cost, federal tax credits, battery storage, EV charging, and home energy assumptions affect real-world renewable energy decisions.
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All renewable energy guides
How Much Does It Cost to Run an Air Conditioner?
Estimate air conditioner running cost from cooling capacity, runtime, efficiency, and electricity rate before sizing solar or cutting summer bills.
Read guide →Home Battery Storage Cost: ROI, Backup Value, and Payback
Estimate home battery storage cost, backup runtime, TOU savings, solar self-consumption, incentives, and payback caveats.
Read guide →Energy Consumption Calculator for Household Electricity Usage
Calculate household electricity usage from appliance wattage, runtime, and kWh before sizing solar, batteries, or EV charging.
Read guide →EV Charging Cost at Home: What Your Monthly Bill Really Looks Like
Estimate home EV charging cost by miles driven, kWh rate, charger level, charging losses, and off-peak utility plans.
Read guide →Charging an EV with Solar Panels — Is It Free?
How many solar panels cover your EV's annual kWh, what timing constraints change the math, and whether a battery is needed for daytime-away drivers.
Read guide →Heat Pump Cost in Colorado (2026)
Estimate heat pump cost and savings in Colorado. With high-elevation cold, abundant sun, and Xcel Energy's retail net metering, Colorado is the best state in the Mountain West for a heat pump + solar combo — plus a 10% state tax credit up to $500.
Read guide →Heat Pump Cost in Connecticut (2026)
Estimate heat pump cost and savings in Connecticut. At $0.30/kWh — among the highest electric rates in the continental US — the heat pump math is dominated by the 32% oil share and Eversource vs UI rate differences, with the RSIP declining block rebate helping on the installation side.
Read guide →Heat Pump Cost in Florida (2026)
Estimate heat pump cost and value in Florida. With 91% of homes already on electric heat and $0.15/kWh, a heat pump's main value is replacing an aging AC unit and cutting heating costs on rare cold snaps — not fuel switching.
Read guide →Heat Pump Cost in Idaho (2026)
Estimate heat pump cost and savings in Idaho. With the cheapest electricity in the US ($0.13/kWh from hydro) and the second-cheapest gas ($0.78/therm), both sides of the heat pump equation are cheap — but Idaho Power dominates, and there's no cash rebate, only a tax deduction.
Read guide →Heat Pump Cost in Illinois (2026)
Estimate heat pump cost and savings in Illinois. With the highest natural gas share in the country outside Utah at 78% and $1.21/therm gas, Illinois has the most entrenched gas-heating culture of any Midwest state — but CEJA's electrification provisions create a policy pathway for heat pump adoption.
Read guide →Heat Pump Cost in Indiana (2026)
Estimate heat pump cost and savings in Indiana. Cheap natural gas at $1.25/therm and cheap electricity at $0.18/kWh create a unique dual-affordability trap — neither fuel is expensive enough to make the other dramatically cheaper. Net metering is sunsetting in 2027 for solar, but heat pump policy is a separate question.
Read guide →Heat Pump Cost in Iowa (2026)
Estimate heat pump cost and savings in Iowa. With a rare 15% state tax credit up to $5,000, $0.13/kWh wind-powered electricity, and MidAmerican Energy's renewable-heavy grid, Iowa's heat-pump case is stronger than in neighboring gas states like Wisconsin or Minnesota.
Read guide →Heat Pump Cost in Kansas (2026)
Estimate heat pump cost and savings in Kansas. The Evergy merger consolidated the state's largest utility territory, and wind generation keeps electric rates moderate at $0.15/kWh — but rural co-op territory has propane pockets where a heat pump can deliver real savings over delivered propane.
Read guide →Heat Pump Cost in Maine (2026)
Estimate air-source heat pump cost and savings in Maine. At $0.28/kWh electricity and $3.90/gal heating oil (57% of homes), a cold-climate heat pump typically saves $2,000-3,000 per year on heating.
Read guide →Heat Pump Cost in Massachusetts (2026)
Estimate heat pump cost and savings in Massachusetts. At $0.30/kWh electricity and $2.72/therm natural gas — the highest gas rate in the Northeast — Mass Save rebates and the SMART program make heat pump economics competitive even for gas-heated homes.
Read guide →Heat Pump Cost in Michigan (2026)
Estimate heat pump cost and savings in Michigan. At $0.21/kWh electricity and $1.13/therm natural gas, Michigan has a high electric-to-gas price ratio — gas wins on operating cost, but the 11% of homes on propane or oil see a different equation. DTE serves Detroit, Consumers Energy the rest, and the LG Chem battery plant signals an electrification shift.
Read guide →Heat Pump Cost in Minnesota (2026)
Estimate heat pump cost and operating savings in Minnesota. With 67% of homes on utility gas at $1.43/therm and $0.15/kWh electricity, the comparison is tighter — but still worth modeling for aging furnace replacement or dual-fuel setups.
Read guide →Heat Pump Cost in Missouri (2026)
Estimate heat pump cost and savings in Missouri. With a higher electric heating share than neighbors at 30%, moderate climate with shorter heating seasons, and cheap electricity at $0.13/kWh, Missouri's heat pump economics look different from the deep-gas states to its north.
Read guide →Heat Pump Cost in Montana (2026)
Estimate heat pump cost and savings in Montana. Cheap hydro and coal electricity at $0.13/kWh meets $0.85/therm gas. NorthWestern Energy offers a 25% state tax credit up to $500 — one of the few incentives in the northern Rockies — but vast rural distances complicate installation.
Read guide →Heat Pump Cost in Nebraska (2026)
Estimate heat pump cost and savings in Nebraska. Nebraska is the only state in the country where all electric utilities are publicly owned — no investor-owned utilities. Cheap rates from public ownership at $0.13/kWh and $1.21/therm gas create competitive heat pump economics, while municipal and co-op boards make the policy decisions that drive adoption.
Read guide →Heat Pump Cost in New Hampshire (2026)
Estimate heat pump cost and savings in New Hampshire. With 42% of homes on fuel oil at high prices and $0.27/kWh electricity — the second-highest rate in New England — heat pump savings are real but narrower than Maine. Eversource time-of-use pilots could shift the math.
Read guide →Heat Pump Cost in New Jersey (2026)
Estimate heat pump cost and savings in New Jersey. With 75% of homes on natural gas at just $1.42/therm and $0.23/kWh electricity, a heat pump is $300-$600 more expensive per year to run than a gas furnace — but the 11% oil and 4% propane share creates a parallel savings story for fuel-switchers.
Read guide →Heat Pump Cost in New York (2026)
Estimate heat pump cost and savings in New York. At $0.29/kWh electricity (ConEd NYC) and $1.89/therm natural gas, the heat-pump-vs-gas math shifts dramatically between downstate and upstate — and the 24% oil share upstate creates a parallel savings story.
Read guide →Heat Pump Cost in North Dakota (2026)
Estimate heat pump cost and savings in North Dakota. With the cheapest natural gas in America ($0.83/therm) and $0.12/kWh electricity, this is the hardest heat-pump case in the nation — but the state is also a wind energy leader with a unique electrification story.
Read guide →Heat Pump Cost in Ohio (2026)
Estimate heat pump cost and savings in Ohio. With cheap natural gas at $1.38/therm and $0.19/kWh electricity, the payback period for a heat pump is longer than in states with pricier gas — but Ohio's deregulated generation market lets you shop electric rates, and the 9% of homes on propane or oil see a different equation.
Read guide →Heat Pump Cost in Pennsylvania (2026)
Estimate heat pump cost and savings in Pennsylvania. At $0.21/kWh electricity and $1.67/therm natural gas — kept cheap by Marcellus shale production — gas wins on operating cost, but the 18% oil share and the PECO-Philadelphia vs Duquesne-Pittsburgh utility split create distinct regional heat pump stories.
Read guide →Heat Pump Cost in Rhode Island (2026)
Estimate heat pump cost and savings in Rhode Island. At $0.30/kWh and $1.55/therm natural gas, the smallest state packs a big heat-pump case — the 28% oil share and unique REGrowth performance-based incentive make oil-to-heat-pump conversion the strongest play.
Read guide →Heat Pump Cost in South Dakota (2026)
Estimate heat pump cost and operating savings in South Dakota. With the highest propane share in the region (18%), cheap electricity at $0.14/kWh, and natural gas at $1.12/therm, rural co-ops dominate — and the heat pump math depends heavily on which fuel you're switching from.
Read guide →Heat Pump Cost in Vermont (2026)
Estimate heat pump cost and savings in Vermont — the state with the strongest heat pump incentives in the Northeast. With $0.50/W rebates up to $5,000, Green Mountain Power's battery programs, and 43% of homes on fuel oil, Vermont's heat pump case is compelling for both savings and resilience.
Read guide →Heat Pump Cost in Washington (2026)
Estimate heat pump cost and savings in Washington State. With 44% electric heat share — highest among cold states — cheap hydro electricity at $0.14/kWh, and high gas prices at $1.73/therm, Washington offers the strongest heat-pump economics in the region, plus a sales tax exemption and production incentive up to $5,000/yr.
Read guide →Heat Pump Cost in West Virginia (2026)
Estimate heat pump cost and savings in West Virginia. With 38% of homes already heating with electricity — by far the highest share among cold states — West Virginia is uniquely positioned for heat pump adoption, as the infrastructure is already electric and the transition is from resistance to efficiency.
Read guide →Heat Pump Cost in Wisconsin (2026)
Estimate heat pump cost and savings in Wisconsin. With the cheapest natural gas in the Midwest ($0.95/therm) and a modest $500 Focus on Energy rebate, the heat-pump-vs-gas math is tighter than Minnesota's — but still worth running for aging furnace replacement or dual-fuel setups.
Read guide →Heat Pump Cost in Wyoming (2026)
Estimate heat pump cost and savings in Wyoming. With 60% of homes on utility gas and the cheapest coal-fired electricity around, heat pumps face an uphill battle in America's coal heartland — no incentives, avoided-cost net metering, and an energy culture built on low prices.
Read guide →Heat Pump Sizing & Buying Guide
How to size an air-source heat pump, compare models, get reliable quotes, and avoid oversizing. Buying guide with HSPF, capacity, climate, and contractor red flags.
Read guide →Solar + Battery Storage Guide 2026: ROI & Backup Tips
Model solar plus battery economics with self-consumption, backup loads, tax credits, TOU rates, and export-credit caveats.
Read guide →Solar Battery & Net Metering Guide: ROI & Payback 2026
Compare solar batteries, net metering, NEM 3.0, export credits, time-of-use rates, backup power, and when storage improves solar ROI in 2026. Includes state-specific strategies.
Read guide →Solar EV Charging at Home: When the Math Works
Learn how to estimate solar panels for EV charging, compare grid vs solar charging, and decide whether a battery is needed.
Read guide →Solar Financing Options 2026: Cash vs. Loan vs. Lease vs. PPA
Compare solar ownership options in 2026: cash purchase, solar loan, solar lease, and PPA. Real pricing data from SEIA, LBNL, and EnergySage. Find the best option for your situation.
Read guide →20 Questions to Ask Solar Installers Before You Sign
Essential questions to ask solar installers about pricing, equipment, warranties, financing, and performance. Free printable list with explanations.
Read guide →Solar Panel Cleaning Guide
Decide when solar panel cleaning is worth it, how to clean safely from the ground, and when to hire a professional instead of chasing near-me results.
Read guide →Solar Panel Cost Guide 2026: Price Per Watt & Payback
Understand solar panel cost in 2026 by system size, price per watt, state, roof condition, battery add-ons, 2026 Section 25D expiration (residential ITC no longer available by default), and net cost after incentives.
Read guide →Solar Panel Maintenance Cost Guide
Plan solar panel maintenance cost, inspection cadence, inverter checks, cleaning triggers, and warranty documents without confusing upkeep with repair service.
Read guide →Solar Panel System Sizing & Installation: Complete Guide 2026
Complete guide to sizing and installing residential solar panels in 2026. Learn about panel types, roof orientation, shade analysis, and grid-tied vs off-grid systems.
Read guide →Solar Panels in Snow
Understand solar panels in snow, winter production expectations, when snow blocks output, and why most homeowners should avoid roof removal.
Read guide →Solar Panels Producing Less
Diagnose why solar panels are producing less with a decision tree for weather, shade, soiling, inverter faults, utility changes, and monitoring errors.
Read guide →Solar Post-Installation Monitoring: What to Watch After Your Panels Go Live
How to verify your solar system is working, what to check in the first 30 days, common issues, monitoring platforms, annual maintenance, and when to call your installer.
Read guide →Solar Contract Checklist: 15 Things to Verify Before You Sign
Before signing a solar contract, check warranty terms, production guarantees, financing fine print, and utility interconnection clauses. Free downloadable checklist.
Read guide →Solar ROI Guide 2026: Returns & Payback Period
Learn how to calculate solar ROI and payback in 2026 using system cost, Section 25D expired Dec 31, 2025 (residential ITC no longer available by default), state incentives, net metering, export credits, and 25-year savings.
Read guide →Solar Tax Credit & Incentives Guide 2026: What Changed and What Still Works
Federal residential solar tax credit (Section 25D) expired Dec 31 2025. Learn how 2026 solar buyers can still save through state incentives, commercial credits, utility rebates, and smart timing. Complete guide with state-by-state breakdown.
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