In a major expansion of our Solar Bonds program, SolarCity is introducing new longer-term Solar Bonds that offer higher interest rates – up to 5.75% - and new ways for investors to purchase bonds through their financial institutions and advisors.

We’re offering new series of bonds that allow investors to choose Solar Bonds that mature in as little as a year, or as much as 15 years. For the first time, investors will also have the option of purchasing Solar Bonds that are transferrable and may be sold.*

We’re also expanding the availability of Solar Bonds. Through a partnership with Incapital LLC, a leading distributor of fixed income securities, SolarCity’s Solar Bonds will be available to more than 500 financial institutions and investment brokers nationwide, opening the door for investors to purchase Solar Bonds through their existing brokerage accounts and IRAs. As part of that partnership, SolarCity will begin offering Solar Bonds with standard CUSIP designations to facilitate purchases through financial institutions and financial advisors.

This will help make Solar Bonds more easily available than ever, since most Americans invest through brokers and financial advisors. In 2014, there were 636,707 investment representatives registered with FINRA, and brokers oversaw more than 100 million customer accounts.

We launched Solar Bonds in October of last year to give the average investor the opportunity to join the growing number of institutional and corporate investors – such as Bank of America, Goldman Sachs, US Bank, and Google – who have partnered with SolarCity to help finance solar power’s rapid growth.

The earnings on Solar Bonds come from SolarCity and the monthly solar payments the company receives from its more than 190,000 customers. They include homeowners, schools and businesses that have made the switch to clean energy.

Offering interest rates as high as 5.75%, the bonds offer a competitive alternative to other savings and investment products such as savings accounts, CDs, treasury bonds and municipal bonds. Solar Bonds offer an investment opportunity that can both be financially attractive and support important goals such as protecting the environment and creating American jobs.

It’s clear that a growing number of investors want a green way to invest that also makes sense financially. In fact,socially responsible impact investing accounts for more than one out of six dollars under professional management in the U.S. New options like Solar Bonds make it possible for even more individuals to choose investments that serve both their financial and social goals.

Incapital has participated in impact investing since 2005, and SolarCity’s Solar Bonds will be distributed to financial institutions as part of its green bond offerings.

Of course, investors will still be able to purchase Solar Bonds directly though SolarCity’s online investment platform. Bonds sold online directly from SolarCity offer the highest rates for comparable maturities and carry no investment fees, but are non-transferrable. Solar Bonds are available from SolarCity to all U.S. investors who are at least 18 years old and meet SolarCity’s eligibility requirements. Investors can purchase Solar Bonds for as little as $1,000.

To learn more, please visit solarbonds.solarcity.com.

This article originally appeared on the SolarCity Blog.