Calculate how much you can save on your National RI bill with solar panels

Average 25 year solar savings for a National RI customer: $52,454

Average solar panel cost: $15,808 - $19,320*

Estimate solar panel cost and savings based on your location, roof and power use.

*Solar panel cost varies by location, solar panel mqanufacturer, system size and the amount of electricity your home uses.

Adding solar panels and switching rate plans can lower your National Grid Rhode Island electric bill

Updated: October 22, 2020

There are three ways you can reduce your National RI bill: changing your habits, switching your rate plan, and adding solar panels.

You've probably heard a lot about reducing energy consumption by doing things like switching to LED lightbulbs and adding insulation to your walls, but these fixes are relatively easy compared to the far more impactful step of making changes to your lifestyle.

The second thing you can do is switch your rate plan. National RI doesn't offer time-of-use billing that can help you save money by shifting your usage of energy-intensive appliances to off-peak hours, but there may be other options for you .

Finally, you can reduce or even eliminate your electricity bill by installing solar panels on your home.

Solar panel cost calculator

How much can I reduce my National Grid Rhode Island bill by switching to a different rate plan

For some people, the savings from switching rate plans may only be a few dollars per month, but for many it can be $20-$100 per month. That's between $240 and $1,200 that you may now be paying to National Grid Rhode Island each year for no reason.

Finding out what's available to you is as simple as a phone call or email to National Grid Rhode Island. Even a small savings can be worth it.

Are solar panels worth it for National Grid Rhode Island customers?

Absolutely. With National Grid’s Renewable Energy Growth program, available solar grants, and sales and property tax exemptions, home solar panels make a lot of sense! National Grid’s net metering rate also allows you to get credit on your power bill for the excess solar electricity your panels produce which you can’t use onsite. Your credits accrue at the same rate as retail rates, unless you produce more than you consume over the course of a month.

Does National Grid Rhode Island offer full 1 for 1 net metering credits for exported solar power

No, National Grid Rhode Island does not offer full 1 for 1 net metering. This means that when you export surplus power from your solar panels, you will be paid less by the utility than what you are charged to buy the equivalent amount of power from the grid.

The amount you are paid by the utility is known as a feed-in tariff. In the case of National Grid Rhode Island, this feed-in rate is $0.15 per kWh.

You'll be credited at retail rates up to when generation outstrips usage, then you'll receive a lower "avoided cost rate", which is calculated monthly and credited to your next bill. 

What incentives, tax credits and rebates are available to National RI customers for installing solar?

The major financial incentive currently available until the end of 2020 is the 26% federal solar tax credit. The way this works is that the full cost of the system needs to be paid to the installer, and this tax credit can then be claimed back as cash when you next do your taxes.

Many states, local governments and utilities also offer incentives for homeowners who go solar. This help can take the form of state tax credits, rebates, tax breaks, SRECs or even performance-based incentives. The best part is that all of these incentives apply in addition to the federal credit.

Here is every incentive you may be eligible for as a National RI customer:

Table 1: Incentives
Upfront Incentives Value*
Residential Renewable Energy Tax Credit (Federal) -$4,351
Property Tax Exemption (State)

100% of assessed value of solar system is exempt from homeowner's property taxes

Varies
Sales and Use Tax Exemption (State)

State law prevents the addition of sales and use tax on solar equipment.

Varies
Net Metering (State)

Excess generation is required to be credited at avoided cost rate. Utilities can purchase the credits or credit on the bill.

Varies
Rhode Island Renewable Energy Fund (RIREF) Small Scale Solar Grants (State)

$.85/W up to 8.235-kW or $7,000 for 2020. You may not claim both the Small Scale grant and the RE Growth Program.

-$7,000
TOTAL -$11,351

*Based on 10.18 kW system, average installation cost $23,735

How much does installing solar panels save the average National Grid Rhode Island residential customer?

If you input the details for a National RI customer with a power bill of $200 per month into the best online solar panels calculator, it tells you that you need a 10.18 kW solar system that will produce 14,226 kWh per year and that this system will return the owner a $52,454 profit after repaying the cost of the system.

The solar savings possible for you as a National RI customer will depend on the amount of electricity you use and the cost of the solar system you buy. Savings also vary based on the direction of your roof or any shading of your roof that affects output.

Here is a monthly and lifetime solar savings estimate for the same relatively typical National RI customer with a $200 per month electric bill prior to solar and who installs a 10.18 kW solar system.

How much do residential solar panels cost for National RI customers?

Showing data for:

Utility provider: Other
Utility bill: $ 190

Prices based on a 8.2kW system, after 26% federal tax credit

Solar prices near you

Cost range of local prices

$10,674-$13,045

Net profit (savings less system cost)

$36,041-$44,050

Payback period

6.6-8.1 years

Recommended size for the selected utility bill

8.2kW

Solar panel cost calculator

Detailed information about your estimate

Table 2: Estimate details

System Size (for 100% usage offset)

10.18 kW

Annual Power Generation

14,226 kWh

Pay-back time (assuming Cash purchase)

6.3 Years

Internal Rate of Return (IRR) on Investment

13.4%

Gross cost

$23,735

Total Upfront Incentives and Rebates

-$11,668

Net Cost of System after rebates and incentives

$12,069

Total Cost of Utility Power Avoided over 25 years

$64,523

Please note that the investment return figures do not include the possible increase in property value.

What are the environmental impacts of National Grid Rhode Island customers installing solar panels?

While most homeowners decide to install solar panels because of financial savings over time, the environmental impacts of this choice are the primary motive for others. Here is a breakdown of the environmental benefits from a National Grid Rhode Island customer installing a 10.18 kW solar system on their property:

A solar system generating 14,226 kWh per year will save you money AND make the world a nicer place

Saves you

$2,098

on average per year

Reduces CO2 emissions

7.04

tons per year

Equivalent to planting

49 trees

per year

Equivalent to driving

15,578 mi

less per year

CO2 emissions calculation based on the electricity generation and emissions data for your state in 2015 as published by the US Government Energy Information Administration.

What factors affect the price of solar panels for National Grid Rhode Island customers?

The cost of installing solar panels will vary with brands of solar panels and inverters you choose and also the installation company you choose to install them.

It is common to see really good systems, using quality brands of equipment, being sold for around $2.33 per watt or $12,069 for a standard 10.18 kW solar system after the customer claims the 26% federal solar tax credit.

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