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Funding a solar revolution

An energy crisis and a growing environmental movement created the first commercial solar projects in the 1970s, funded by Wells Fargo.
Illustration of a Wells Fargo branch building. Solar panels are visible on a canopy.
Featured photo caption: Wells Fargo installed its first solar array at its branch at Culver City, California, announcing “Solar Energy Arrives” in 1979. Photo Credit: Wells Fargo Corporate Archives.

In the 1950s, commercial solar silicon photovoltaic (PV) cells came onto the market. For the first time, the sun powered satellites, radios, and even heating systems. Despite these early successes, the expensive and novel technology did not inspire an immediate energy revolution.

That changed dramatically with the energy crises of the 1970s. The U.S. had about 6% of the world’s population, but used 30% of the world’s energy, and that demand kept growing. As limited supply and greater demand led to price spikes, President Richard Nixon started price controls in 1971 to create artificially affordable gas. His domestic policies could not influence the international market, however.

Car at gas station. Sign reads: Is your number even today
To manage the gas shortage, some states rationed gas refills based on license plate numbers. Photo Credit: National Archives.

America had ceased being an exporter of oil in the 1950s, and depended on imports for about one-third of its energy by the 1970s. In 1973, the U.S. allied in support of Israel during the Yom Kippur War. The Arab members of the Organization of the Petroleum Exporting Countries united to retaliate with an embargo on oil exports. The cost of a barrel of oil jumped immediately from $3 to $12. Gas stations closed as cars lined around the block to fill their tank. Families bought sweaters and dropped their home heating thermostats to a recommended 68 degrees. The first federal speed limits were posted on the nation’s highways to reduce unnecessary speed and gas usage.

Black and white cartoon of a man peering into an empty gas pump nozzle at a station while his family waits in a packed station wagon.
Cartoon reflecting the stress of the gas shortage produced by Wachovia Bank, now Wells Fargo. Photo Credit: Wells Fargo Corporate Archives.
Illustration of piggy bank with trefoil symbol and Save Energy text. Three circles above piggy bank contain a half-darkened light bulb, a speed sign at 55mph, and a thermometer at 68 degrees. Image link will enlarge image.
Fidelity Bank, now Wells Fargo, introduced a “Save Energy” graphic in 1975 to represent its new energy program. Under the program, employees were asked to make maximum efforts to reduce energy consumption by 15 to 25 percent throughout the organization. Fidelity Bank also created an energy conservation committee to find new methods of cutting energy consumption and to aid in eliminating any energy waste.

The first embargo lasted only five months but resulted in years of additional disruptions, brownouts, gas shortages, and fear. The crisis deepened with another embargo following the 1979 Iranian Revolution.

At the same time, Americans debated the impact of energy production as the early environmental movement took shape. People searching for cleaner air and water organized and helped create the first federal regulation of pollution. Concerned citizens gathered to celebrate the first Earth Day on April 22, 1970.

Growing environmental activism ensured that the U.S. would invest in green energy solutions as it looked for solutions to the energy crisis. Government grants funded research projects, and the state and federal tax deductions encouraged a revolution of energy efficiency. Private investment from banks like Wells Fargo offered additional momentum.

Investing in early technologies

In 1976, developers in California’s Silicon Valley wanted to be part of the green energy movement. After learning that about 30% of domestic energy use came from space heating, the developers sought a better solution with a solar-powered heating and cooling system for a new project.

Illustration of two buildings. Each has a wing at a 45 degree angle to the building that holds the solar panels.
Placed at 45 degree angle to the building, the solar array at this industrial park in California was the largest installation of its time for a commercial space. Wells Fargo loans helped ensure its construction. Photo Credit: Wells Fargo Corporate Archives.

Many homes today use solar panels as an alternative to the electrical grid. But technical limitations at the time turned heating and cooling into the most popular use of solar power. These thermal solar systems used the heat of the sun to warm water circulated through panels in copper tubes. Sophisticated air control systems manipulated the resulting air currents to make a building warmer or colder.

Diagram showing how light is converted into energy using a solar thermal system.
Diagram explaining the solar thermal heating and cooling system first used at the Wells Fargo branch in Culver City, 1979. Photo Credit: Wells Fargo Corporate Archives.

While some industrial plants had retrofitted buildings with solar-powered heating, the Silicon Valley developers planned to utilize solar from the start, making it possibly the first solar system planned for a new commercial building. At more than 100,000 square feet, it was also believed to be the largest industrial use of solar in the U.S. at the time. While many banks considered solar a risky investment, Wells Fargo provided $2 million in construction loans to the project — more than $11 million adjusted for inflation in 2023. The building opened in 1978 to national attention as representative of a new era in American architecture.

Since then, the solar industry has continued to evolve. Technology has become more efficient and more affordable, even resulting in energy surpluses. Wells Fargo has continued to invest in renewable energy projects.

Solar at Wells Fargo

Just as families and communities faced difficulties during the energy crisis, Wells Fargo and other banks saw their operations costs skyrocket. Companywide conservation drives turned off signs and lowered heat. From 1973 to 1974, Wells Fargo reduced its energy use by 24%.

Meanwhile, the Corporate Responsibility Committee at Wells Fargo set goals for greener alternatives. In 1979, Wells Fargo installed a solar heating and cooling system as a test at a branch in Culver City in sunny Southern California. As the property manager said at the time, “You can talk theory forever, but until you actually try it, you don’t really know how effective it will be.”

People seated at desks. In the background, red tubing is seen behind a glass wall.
At the Wells Fargo branch in Culver City, glass walls allowed customers to see the solar heating and cooling system. Photo Credit: Wells Fargo Corporate Archives.
People seated at desks. In the background, red tubing is seen behind a glass wall.
At the Wells Fargo branch in Culver City, glass walls allowed customers to see the solar heating and cooling system. Photo Credit: Wells Fargo Corporate Archives.

The branch used an array of 840 square feet of solar panels to heat water in copper tubes. Glass walls ensured that customers could see the $48,000 solar thermal system at work. As solar technology continued to evolve, Wells Fargo continued experimenting with solar systems and renewable energy.

The Environmental Protection Agency recognized Wells Fargo as the nation’s largest purchaser of Renewable Energy Certificates in 2006, the same year the company launched a business focused solely on providing financing to renewable energy projects. The company made a sector-leading renewable energy commitment in 2016, and began meeting 100% of its global electricity requirements with renewable energy the following year.

Today, Wells Fargo maintains solar arrays on 16 properties, in addition to a number of solar-powered ATMs, and has announced plans to bring on-site solar generation to close to 100 new branch and corporate buildings.

Color photograph of a solar array on top of a Wells Fargo building.
In 2009, Wells Fargo began installing solar photovoltaic systems on the roofs of 10 retail banking stores in the Denver metro area, Colorado.

Wells Fargo solar timeline


Wells Fargo announces 10-point Environmental Commitment that includes the company’s first sustainable finance goal: $1 billion in lending over five years to green companies.


Wells Fargo and the U.S. Department of Energy’s National Renewable Energy Laboratory launch the Innovation Incubator (IN2) program. This environmental grant program is designed to accelerate the development and commercialization of early-stage clean technologies and foster a clean technology ecosystem.


Projects owned in whole or in part by Wells Fargo produce more than 10% of all solar photovoltaic and wind energy generated in the U.S.


Wells Fargo begins meeting 100% of global electricity requirements with renewable energy, primarily through the purchase of Renewable Energy Certificates, or RECs, in line with the first phase of its 2020 renewable energy goal.


Wells Fargo makes a $200 billion sustainable finance commitment through 2030, with at least 50% going toward renewable energy and clean technology projects. Wells Fargo also provides $5 million in seed funding to create the Tribal Solar Accelerator Fund with the nonprofit GRID Alternatives to support solar projects in tribal communities.


Wells Fargo announces a renewable energy transaction that will power 400 Wells Fargo properties in Texas from a new utility-scale solar installation in the state. It is the first major transaction under the second phase of the company’s renewable energy goal — to transition from purchasing RECs to entering into long-term contracts that support the development of net-new renewable assets located near its load centers. The company also announces it will expand its portfolio of on-site solar arrays to more than 100 corporate properties.

The Wells Fargo Innovation Incubator is selected as a Bloomberg New Economy Forum Solution and received the U.S. Chamber of Commerce Foundation 2019 Citizens Award for Environmental Stewardship.

Wells Fargo achieves carbon neutrality for Scope 1 and Scope 2 emissions.


Wells Fargo Corporate Properties Groups (CPG) executes long-term agreements for renewable energy locations in eight additional states, the District of Columbia and the Philippines. At years end, CPG had entered into a total of nearly 120 long-term contracts that support the development of over 750 megawatts of net-new renewable energy assets.

The Renewable Energy and Environmental Finance group reaches $10 billion in financing for utility-scale renewable energy projects, accounting for 12% of all wind and solar energy capacity in the U.S. over the past 10 years.


Wells Fargo announces plans for onsite solar at about 100 branch and corporate locations across the U.S. Systems range from a six-kilowatt rooftop array on a branch in Connecticut, to a 6.5 MW carport and rooftop system at Wells Fargo’s Chandler, Arizona, campus.

Wells Fargo announces goal to achieve net-zero greenhouse gas emissions by 2050, including financed emissions, and resets sustainable finance goal to $500 billion by 2030.

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