Hello There! Let‘s Explore Whether Solar Panels Are Right for You in Maine

As a fellow New Englander, I know choosing to go solar here requires careful analysis. While Maine offers excellent opportunities for long-term savings, the state also faces key cost and policy barriers.

This guide will provide everything you need to decide if home solar power makes sense – outlining costs, payback time, available incentives and more based on the latest market data.

Weighing the Pros and Cons of Installing Solar in Maine

The High Costs: Maine tops the charts for most expensive solar equipment in the continental U.S. You‘ll pay a premium $2.87 per watt – about 50 cents above average. And with lower-than-average electricity bills, payback periods are lengthy.

The Eventual Savings: Once your 9-14 year payback period ends, solar locks in huge household electricity savings – especially as rates trend higher. Well-sized systems offset up to 95% of annual power needs essentially for free for 10-15+ years.

The Clean Power: Solar lets you generate your own renewable energy while reducing grid demand and emissions. And Maine‘s ambitious ‘80% renewable by 2030‘ target will continue accelerating solar‘s growth.

The Sweet Incentives: A 26% Federal Tax Credit slashes upfront system costs by thousands. Additional Maine solar incentives can drop net out-of-pocket costs below $10,000.

As you weigh your decision, let‘s explore all the solar costs, policy, installation considerations and more for Maine homes.

How Maine‘s Limited Peak Sunshine Impacts Solar Potential

Simply put, Maine isn‘t the sunniest state. Up north by the Canadian border, places like Caribou average just 4.2 peak sun hours daily.

Peak sun hours measure how many hours per day solar irradiance is at least 1,000 watts per square meter – prime conditions for solar generation.

But even in the sunnier south like Portland, Maine only sees modest peak averages of 4.8 hours – limiting solar production capabilities year-round.

Compare that to sunnier states like Arizona (6.4 hours) or California (5.9 hours). This weather disadvantage is a key reason Maine solar payback times are lengthier.

Check this map to view Maine‘s daily sunlight hours based on location:

RegionAvg. Peak Sun Hours
Northern Maine3.8
Central Maine4.2
Southern Maine4.8

Maine Average Peak Sunshine Duration by Region. Source: Solargis

This limited peak sunshine data factors directly into proper solar array sizing…

Right-Sizing Your Maine Solar System

You‘ll want to match your solar setup to Maine‘s available sunlight so it‘s not over or undersized. That comes down to doing this quick solar math:

Your Average Daily Power Needs ÷ Maine Avg. Peak Sun Hours = Ideal System Size (Watts)

For example, the typical Maine home uses 570 kWh per month (about 19 kWh per day).

If your location averages 4.5 peak sun hours, your ideal system size would be 19 ÷ 4.5 = 4,200 watts or 4.2 kilowatts.

Oversizing beyond what your site can support won‘t generate meaningful extra energy but will raise costs. Undersizing leads to unnecessary ongoing power bills.

Getting this solar array rightsizing correct is crucial to faster payback times and maximizing long-term electricity savings in Maine.

Evaluating Home Solar Payback Periods in Maine

Let‘s compare the economics of typical solar setups to see how long your investment would take to pay itself back and start saving money.

Based on a $2.87 per watt install cost and Maine‘s $0.16 per kWh electric rate, here are representative payback periods:

System SizeGross CostFederal Tax CreditNet CostEst. Years to Payback
4 kW$11,480-$2,685$8,79513 years
5 kW$14,350-$3,731$10,61914 years
6 kW$17,220-$4,477$12,74315 years

*Maine Solar Payback Periods by System Size

A few key takeaways:

  • After the 26% Federal Tax Credit, out-of-pocket solar costs drop by $2,500+
  • Payback periods are lengthy but remember – solar panels operate efficiently for 25+ years
  • Payoff timing for a 4-5 kW right-sized system is 1-2 years quicker

So while solar is a long-term play in Maine, once your system is paid off after 13-15 years you‘ll enjoy 10-12+ years of nearly free power.

Not bad! Now let‘s look at how much homeowners can save…

Solar Electricity Bill Savings in Maine

After payoff, solar cuts your utility electricity purchases by up to 95% – saving households hundreds per year.

For our 5 kW reference system generating over 5,500 kWh annually, you would save roughly:

  • 5,500 kWh x $0.16 per kWh Maine electric rate = $880 in utility bill savings per year

And again – since modern solar equipment operates efficiently for 25+ years, a 5 kW system would deliver over 20 years x $880 = $17,600 in electricity savings after payback.

The following table summarizes potential long term utility bill reductions from solar in Maine:

System SizeEst. Annual OutputAnnual SavingsLifetime Savings
4 kW4,400 kWh$704$14,080
5 kW5,500 kWh$880$17,600
6 kW6,600 kWh$1,056$21,120

*Maine Solar Electricity Savings

Going solar locks in sizable utility savings in the long run. And retail electric rates are only expected to rise over time, improving solar savings further.

Which Solar Panel Type is Best Suited for Maine‘s Climate?

To squeeze the most production potential from Maine‘s limited peak sunshine, premium monocrystalline solar panels are strongly advised over cheaper polycrystalline models.

Why? Mono panels rated up to 22% efficiency convert more sunlight to usable energy. That outperforms polys typical 15-18% ratings.

Higher sunlight conversion equals greater energy output during Maine‘s shortest winter daylight hours when every photon counts!

Top monocrystalline panel products appropriate for Maine include:

  • LG Neon R
  • Panasonic EverVolt
  • SunPower Maxeon 3 (highest efficiency at 22.2%)
  • CertainTeed Apollo II

While pricier upfront, efficient mono panels like these maximize savings over time – paying dividends for 25+ years in Maine‘s tougher climate.

Professional Installation Is Key for Superior, Safe Solar Performance

Proper installation from a certified, experienced contractor ensures your panels sustain peak production over decades.

The North American Board of Certified Energy Practitioners (NABCEP) is the gold standard for solar installer certification.

I‘d also advise considering only mature local companies with:

  • 5+ years serving Maine specifically
  • Hundreds of regional installs already complete
  • Strong industry reviews and proven experience handling Maine‘s toughest weather

Established local firms know how to tailor components to perform best in our climate while extremes like storms, cold and snow rarely phase them. Bridgegate Solar, Revision Energy and Moose Country Solar fit this bill.

Weighing the Future Trajectory of Solar in Maine

No question – steep equipment pricing and low peak sun hours present challenges regarding solar power in Maine.

But the state is leaning into renewables heavily as part of its energy future.

Maine set an 80% clean energy by 2030 target – among the most ambitious state renewable portfolio standards.

Already, 1 out of 7 Maine homes have rooftop solar as adoption keeps spreading each year. And the state‘s largest solar project came online recently too – with Farmington now producing 115 megawatts cleanly.

Between policy momentum and solar infrastructure expanding quickly, costs should come down over the next 5-10 years as well.

Getting in now locks in exceptional long-term personal savings as power costs rise for non-solar homes.


I hope this thorough overview has provided the solar insights you need to evaluate whether now is the right time to install your own panels.

Please reach out with any other questions! I‘m always happy to discuss more.

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