Interested in solar panels? Here is some advice.

Thanks to technological and manufacturing advances, costs for solar panels have tumbled in the last decade, making solar energy more popular for homeowners. But figuring out how to add a solar energy system to your roof can be daunting.اضافة اعلان

Workers installed a solar and battery system this winter at my home in a New York City suburb. It was a major investment but has already begun paying off in lower utility bills and providing peace of mind that we will have at least some electricity during power outages, which are common here because storms often knock down power lines.

Interest in rooftop solar systems is high and growing as energy prices rise and concerns about climate change mount. Many people are also worried about blackouts caused by extreme weather linked to climate change. A Pew Charitable Trust survey in 2019 found that 6% of Americans had already installed solar panels and that another 46% were considering it.

“The biggest thing is that solar is a lot cheaper than it used to be even in places like New York City and Boston, where it tends to be more expensive than in the suburbs,” said Anika Wistar-Jones, director of affordable solar at Solar One, an environmental education nonprofit in New York City that helps affordable housing and low-income communities adopt solar energy.

If you are interested in solar, here are some things to consider.

Can you add solar panels to your roof?

This question might seem simple, but finding the answer can be surprisingly complicated. One installer told me that my roof was so shaded by trees that solar panels would not generate enough electricity to make the investment worthwhile. Hearing another opinion was worth it: The installer I hired allayed those concerns and recommended some tree trimming. On sunny days my system often generates more power than my family uses.

It can also be difficult to find out what your local government and utility will permit because the information is usually not readily available in plain language. I learned that lesson at my previous home.

When I lived in New York City, it took months of research to learn that I couldn’t install panels on my roof. The city requires a large clear area on flat roofs like mine for firefighters to walk on, it turns out. And I couldn’t install solar panels on a canopy — a rooftop framework that elevates the panels — because it would violate a city height restriction for homes on my block.

The best approach is to cast a wide net and talk to as many solar installers as you can. You might also consult neighbors who have put solar panels on their roofs: People in many parts of the country have banded together in what are known as solarize campaigns to jointly purchase solar panels to secure lower prices from installers.

“That has been really successful in neighborhoods and communities all across the country,” said Gretchen Bradley, community solar manager at Solar One.

Can I afford a solar installer?

You should seek proposals from several installers. Comparison shopping services like EnergySage and SolarReviews make it easy to contact multiple installers.

When reviewing proposals, pay attention to how much the system will cost per watt. This tells you how much you are paying for the system’s electricity-generating capacity and allows you to compare offers.

The median quote for new rooftop solar systems is $2.75 per watt, according to EnergySage. That works out to about $26,125 for an average system of 9,500 watts before taking into account a federal tax credit. For the 2022 tax year, the credit stands at 26% of the cost of the solar system; it is slated to drop to 22% in 2023 and end in 2024. Many states, including Arizona, California, New York and Massachusetts, also offer residents incentives to install solar systems, such as rebates and tax breaks.

Prices can vary greatly because of location, local labor costs and other factors, like what kind of home you live in and whether other work is needed before installation. If your roof is old or damaged, for example, it might need to be replaced before a solar system can be installed.

Rooftop solar systems can reduce monthly utility bills, depending on electricity rates, how much energy a home uses and state policies. Systems that save more money will help buyers recoup their investment faster. Vikram Aggarwal, chief executive and founder of EnergySage, said solar systems should ideally pay for themselves within 10 years.

The excess electricity that rooftop systems produce is sent to the electric grid, and utilities typically compensate homeowners for that energy through credits on their monthly bills. The value of those credits varies by state.

How should I pay for it?

If you can afford to buy a solar system outright, you will get the best deal by paying cash. Systems purchased with loans or through leases tend to cost more, especially over the life of the contract. Shopping around is your best hedge against falling prey to dubious or predatory agreements.

The main advantage of leasing a solar energy system is that your costs are typically fixed for the duration of the contract. But experts caution that leases can be hard to get out of and could become a burden when you sell your home, because buyers might not want to take on your contract.

Aggarwal noted that leases “make sense” for some people who may not earn enough to claim the federal tax credit. He suggested that people interested in solar leases get three or four quotes from different installers.

Should I buy a battery?

Adding a battery to your solar system will allow you to store some of the excess electricity it generates to use during a blackout or in the evening and night. A solar system without a battery will not keep you supplied with power during an outage because most residential systems are automatically turned off when the grid goes down.

Batteries can be expensive, especially if you want to run large appliances and provide power for many hours or days. A 10- to 12-kilowatt-hour battery, which can store roughly a third of a home’s typical daily electricity use, costs about $13,000, according to EnergySage.

But another reason to buy a battery is that the federal tax credit for rooftop solar systems applies only to the costs of batteries that are purchased with solar panels, and not to batteries added in a different tax year. About 28% of residential solar systems installed in 2021 included batteries, up from 20% in 2020, according to a survey by EnergySage.

If I can’t install solar panels, can I still buy solar energy?

You might be able to join a community solar project, which are usually installed on open land or on the roofs of warehouses and other large buildings.

While the rules vary by state, community solar programs generally work in similar ways. Members get two bills a month: one from the community solar project and one from their utility. The projects sell electricity at a discount to the rate charged by your utility, and each kilowatt-hour of power you buy shows up as a credit for a kilowatt-hour of energy on your utility bill.

New Yorkers who join a community solar project, for example, can save about 10% on their monthly electricity bill, Bradley said. “It doesn’t cost anything to sign up or leave a project,” she added.

While most states allow community solar, a majority of such projects are in just four states — Florida, Minnesota, New York and Massachusetts — according to the National Renewable Energy Laboratory.

You can search for projects in your area on websites including EnergySage and PowerMarket or through state agencies, like the New York State Energy Research and Development Authority.

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