The Past, Present, and Future of Renewable Energy Development

The Past, Present, and Future of Renewable Energy Development

by | Jul 27, 2026 | Public Service Commission, Renewables, Utility Scale

The Public Service Commission of Wisconsin (PSC) recently released two documents that provide useful insights into the past, present, and future of renewable energy development for our state. The PSC’s 2025 Renewable Portfolio Standard (RPS) memo provides statistics regarding utility-scale renewable energy that serves Wisconsin’s electricity needs, including projects located in Wisconsin and in neighboring states. The 2026-2032 Draft Strategic Energy Assessment (SEA) provides many insights, and most pertinent to the renewable industry, the SEA outlines utility plans for additional renewable energy development.

In short, the RPS memo tells a high-level tale of how Wisconsin got to where we are today with renewable energy. It shows that while wind-generating facilities have historically met most of Wisconsin’s renewable energy needs, production from new Wisconsin-based solar projects has increased the total amount of renewable energy that we use. As of 2025, about 20% of all the electricity we use in Wisconsin comes from renewable energy.

Separately, the draft SEA paints a picture of what the future could hold for Wisconsin. According to utility plans, the growth of Wisconsin-based solar will continue through 2030, as will battery energy storage systems (BESS) that support clean energy integration. Starting in 2030, utilities are planning for new Wisconsin-based wind projects to come online and add to Wisconsin’s renewable energy portfolio. This begs the question: Is Wisconsin on track to add enough renewable resources to serve our future needs? Due to policy uncertainty and speculative data center growth, the crystal ball is much too murky to answer that question with much confidence.

The 2025 RPS Memo

Let’s begin with a look back at Wisconsin’s historical renewable energy development. This figure from the RPS memo shows the growth of wind energy serving Wisconsin’s needs compared to baseline hydroelectric and biogas/biomass resources over the last decade plus:

And this PSC figure below presents utility-scale solar production over that same time span separately, as solar production was relatively flat until about 2020:

While the RPS memo does not provide detailed historical stats, based on RENEW’s participation in PSC cases and observation of renewable energy trends, we can provide insight into renewable energy development. This includes development that occurred before 2013 and new trends shown in the RPS memo figures. 

Between 2008 and 2013, renewable energy growth in Wisconsin was mostly driven by wind projects. According to the 2012 RPS memo, at that time, wind projects located in neighboring states contributed about 43% (2.8 million Megawatt-hours, or MWh) to Wisconsin’s renewable energy portfolio. Wisconsin-based wind projects contributed another 20% (1.3 million MWh). Altogether, wind production made up about two-thirds of Wisconsin’s renewable portfolio, with baseline hydroelectric and landfill gas making up most of the rest. The addition of these wind facilities after 2008 helped Wisconsin reach the 10% statewide renewable energy goal for the first time in 2013.

While growth in all renewable energy serving Wisconsin fell flat between 2013 and 2019, in 2020, wind energy production began to increase again, thanks to new projects. A new trend began here as well. For the first time, utility-scale solar projects located in Wisconsin came online and started to significantly contribute to our renewable energy portfolio. 

The 2025 RPS memo pie chart below presents a snapshot of what renewable resources serve Wisconsin’s electricity needs today. This is Wisconsin’s current renewable energy portfolio:

While non-Wisconsin-based wind projects used to occupy about two-thirds of this pie in the mid-2010s, that percentage has shrunk – not due to a reduction in wind production, but due to the growth of Wisconsin-based solar. In fact, while non-Wisconsin wind production increased from 2.8 million MWh in 2012 to 5.9 million in 2025, Wisconsin solar production grew astronomically over that same period – from a mere 5,000 MWh in 2012 to 4.2 million MWh in 2025.

The PSC only counts renewable energy production from facilities certified by the PSC as renewable resources, either owned by Wisconsin utilities or contracted by them to serve Wisconsin’s electricity needs. Each year, the PSC calculates the RPS percentage as total renewable energy production from these facilities divided by total retail sales of electricity to Wisconsin customers.

The main takeaway from the 2025 RPS memo is that renewable energy now serves about 20% of Wisconsin’s electricity needs. This includes a doubling in percentage from 10% in 2013, when Wisconsin first met its statewide goal, and a noticeable uptick from 2024, when 18.5% of our electricity came from renewables. To see where Wisconsin is headed, we will now have to look at the draft SEA.

The Strategic Energy Assessment (SEA) 2026-2032

The SEA is a forward-looking document that attempts to project future needs and future supply within Wisconsin’s electricity industry. Wisconsin does not have an Integrated Resource Plan (IRP), as many utility-regulated states do. To somewhat fill that IRP gap, the SEA serves as an information-gathering and reporting process that the PSC is required to do by state law. The PSC released a draft that covers the 2026-2032 period and is now seeking public comments through September 28 to inform updates and edits made to its final revised report.

The first takeaway from the draft SEA is the projected rise of data centers in Wisconsin. Over the 2026-2032 period, collective utility forecasts project a 40% increase in statewide summer peak. The SEA also states that 72% of this projected increase is due to new data centers and their electricity needs. 

While this blog will focus on renewable energy insights provided by the SEA, we must also note that bullish utility projections of new data centers in Wisconsin are highly uncertain, and that the SEA does not provide a rigorous vetting of utility forecasts that would be included within IRP proceedings.

Before we delve further into the SEA outlook for renewable development, let us reference one important SEA statistic that the RPS memo misses. That statistic is the installed capacity of customer-owned solar, which can also help us understand a fuller picture of Wisconsin’s renewable energy production. The SEA states that in 2025, Wisconsin residents and businesses owned 318 Megawatts (MW) of rooftop solar. If we assume a 13% average capacity factor for rooftop solar, this equates to about 362,000 MWh of electricity produced by these customer-owned solar systems in 2025. 

Since utilities do not register these customer-owned solar systems for RPS compliance, the RPS memo does not capture Wisconsinites’ direct contribution to Wisconsin’s renewable portfolio. But if you insert the Wisconsin rooftop solar production estimate into the calculation of that 20% RPS statistic mentioned above, Wisconsin’s 2025 statewide renewable energy percentage increases to about 21.4%. 

As we turn to the SEA’s 2032 renewable projections, it is important to note Wisconsin’s current installed capacity of renewable resources. Wisconsin currently has 2,189 MW of utility-scale solar generating capacity, 827 MW of wind generating capacity, and 510 MW of BESS storage capacity in service. 

From this understanding of Wisconsin’s current generation portfolio, we can better contextualize the planned build-out coming over the next several years. The table below is informed by SEA-collected statistics and reflects utility-planned additions:

If these plans fully come to fruition, by 2032, Wisconsin will nearly triple its in-state solar and wind generating capacity and more than quadruple its current capacity to store electricity. 

Based on other information within the SEA, a bit more insight can be shared with regard to the start-up timing of these resources. The start of operations for these solar and BESS resources will mostly occur between 2026 and 2030. Many of these solar and battery projects have already been approved by, or have applications pending before, the PSC. Applications for Wisconsin wind additions are just now beginning to be presented to the PSC. Those wind projects would likely start operating between 2030 and 2032.

Later this summer, RENEW plans to follow up on this blog to compare the SEA 2032 clean energy projection to the 2050 modeling results for what Wisconsin will need according to our Wisconsin Zero Carbon Study.

PSC Approves Fox Solar Project

PSC Approves Fox Solar Project

by | May 21, 2026 | Public Service Commission, RENEW Wisconsin, Solar, Utility Scale

On Thursday, May 21, the Public Service Commission of Wisconsin (PSC) approved the Fox Solar Project. At 100 Megawatts (MW), this solar project will produce enough clean energy to power about 25,000 homes. The project is paired with a 50 MW battery energy storage system, providing the flexibility to provide power when the sun goes down.

Located in Oconto County, it is planned for completion in 2028. Projects like this have a wide range of local and statewide benefits, including economic growth, new funding for local municipalities, and reduced emissions from energy production.

Witness testimony from David Loomis of Strategic Economic Research stated that this project will create 300 temporary jobs during construction, along with an additional 20 long-term jobs related to the project’s economic activity.

Along with jobs, the project will support the surrounding communities through utility-aid payments. Over the 25-year life of the project, it is expected to contribute more than $13 million in utility aid payments to Oconto County and the Town of Morgan. Recent legislation has changed utility-aid payments to also include battery installations, which has increased the previous estimate on payments for local governments.

Beyond the economic aspects of this project, it also provides an additional source of clean, reliable energy that isn’t subject to volatile fuel prices. With this project we’re removing 304 million pounds of CO2 related to energy production in the first year of operations, and that’s just the CO2 emissions.

The amount of emissions reductions we’ll see from the project is about the same as taking almost 30,000 cars off the road. Avoided emissions, whether from energy production or our cars, means healthier air for everyone. We estimate that in Fox Solar’s first year of energy production, we’ll see $690,000 in economic benefits associated with the public health improvements we expect to see

Thanks to everyone who took the time to share their support of Fox Solar with the PSC!

PSC Approves Muddy Creek Solar Project

PSC Approves Muddy Creek Solar Project

by | May 14, 2026 | Public Service Commission, RENEW Wisconsin, Solar, Utility Scale

On Thursday, May 14, the Public Service Commission of Wisconsin approved Muddy Creek Solar, a 322 Megawatt (MW) solar project paired with a 300 MW battery energy storage system. Developed by Geronimo Power, the project is expected to provide nearly $2 million in annual utility aid payments to local municipalities.

Geronimo Power has also shown its commitment to supporting the community that will host the project by pledging an annual $75,000 donation to local school districts. Through a Charitable Pledge Agreement, the Menomonie Area School District and the Elk Mound Area School District will receive $12,500 and $62,500, respectively, for 20 years after the project begins operations.

In addition to the direct cash benefit to local municipalities, the project is expected to create more than 800 temporary jobs during construction and more than 50 long-term jobs. Also important to consider is the direct payments to landowners who have leased their land for the life of this project.

This project shows that clean energy projects can bolster our local economies, provide our state with the energy it needs, and reduce our carbon emissions from energy generation.

In total, we expect this project to reduce emissions by 954 million pounds of CO2, the equivalent of removing 94,000 gas-powered vehicles from our roads. And that’s just the CO2.

Thanks to the reduction of CO2 and the several other greenhouse gases that fossil fuels would pump into the air we breathe, Wisconsin can expect more than $2 million in economic benefits associated with public health improvements in Muddy Creek Solar’s first year of operations alone.

This solar and battery project will provide many things Wisconsin needs—jobs, reliable energy, consistent income for landowners, more funding for our schools and local governments, and cleaner air. And when the project reaches the end of its life, the land can be returned to its prior use, whether that be agricultural, recreational, or some other purpose.

Thanks to everyone who took the time to share their support for this much-needed energy project. Together, we can transform how Wisconsin is powered.

PSC Approves WPPI’s Bring Your Own Device Demand Response Program

PSC Approves WPPI’s Bring Your Own Device Demand Response Program

by | May 12, 2026 | Public Service Commission, RENEW Wisconsin

On April 23, 2026, the Public Service Commission of Wisconsin (PSC) unanimously approved the Village of Waunakee’s application to establish a Bring Your Own Device (BYOD) demand response program, administered by WPPI Energy on behalf of its member utilities. The decision is a win for Wisconsin customers and a meaningful step forward for demand response across the state’s municipal utility sector.

RENEW Wisconsin submitted public comments in support of the application, and we are excited to see the program move forward.

What the Program Does

The BYOD program allows residential and general service customers to voluntarily enroll their own smart thermostats and receive a one-time enrollment credit of $25 and an annual participation incentive of $25. During summer peak events, WPPI’s platform provider, EnergyHub, will remotely adjust thermostat settings to reduce air conditioning load.

What the PSC Decided

The commission approved the program as a permanent offering rather than a pilot, a distinction that Commissioner Kristy Nieto walked through carefully during the hearing. The logic is straightforward: this program design is not new. MG&E and We Energies have already been running nearly identical programs successfully in Wisconsin, and putting every new adopter of a proven model through a pilot phase does not serve any particular purpose. RENEW made this same point in our comments, and we are glad the commission agreed.

The PSC also added reporting requirements to track program performance and cost-benefit outcomes, and delegated authority to the Division Administrator to approve future identical applications from other WPPI members without requiring full commission review each time.

A Win for Bill Credits

One of the more substantive conversations at the hearing centered on how customers receive their participation incentives. The application proposed offering either a gift card or a bill credit, with the utility choosing at the start of each season.

In our comments, RENEW made the case for bill credits on two levels: the payment format and its recurrence over time.

On format, RENEW offered that a credit on a customer’s utility bill makes the connection between their participation and their energy costs visible in a way a gift card does not. When someone opens their bill and sees a line item tied to a demand response event, it reinforces what the program is doing and what they contributed. A gift card can feel entirely disconnected from the energy of the relationship.

On structure, RENEW recommended that WPPI look beyond the current flat annual payment toward a continuous monthly bill credit as the program matures. A one-time $25 credit is easy to forget by the time the season ends. A credit that shows up month after month keeps the connection alive and creates a natural incentive to stay enrolled on the days the program needs participants most. We are already seeing this approach work: both We Energies’ EV program and Alliant Energy’s demand response program have monthly bill-credit structures that generate strong interest precisely because customers can see and track what they receive.

RENEW also raised a longer-term question about whether a flat $25 annual payment actually reflects what customers are contributing. If a customer reduces their energy use on the hottest, most stressful days of the year when the grid needs it most, that contribution has real value, and the incentive structure should eventually reflect that. Alliant Energy’s residential demand response program offers a useful model. Instead of a flat annual payment, customers earn a credit for every kilowatt-hour they reduce during a peak event, and they receive a follow-up email showing exactly how much they cut and how much they earned. That kind of structure, where your credit reflects what you actually contributed rather than just the fact that you enrolled, is where RENEW would like to see programs like this head over time.

That argument resonated with the commission. Commissioner Hawkins specifically cited RENEW’s comments, noting that the visible connection between a customer’s actions and their bill is what makes a program like this meaningful. The commission required bill credits as the default, with a narrow exception if a utility can demonstrate they are not technically feasible, with a requirement to notify the commission in that event. 

The approved incentive structure maintains the current $25 annual payment for now, which RENEW understands to be a practical starting point for a program that is new to WPPI and its members. The bigger takeaway is that the commission is aligned on the principle that customers should be able to see the value of their participation directly on their bill. 

Step One of Something Larger

RENEW is enthusiastic about this program, however, it is not the ceiling of what is possible. EnergyHub’s platform already supports thermostats, batteries, electric vehicles, and commercial and industrial loads within a single system. WPPI is starting this pilot with a vendor that is already built for where demand response is heading.

In our comments, we encouraged WPPI to treat this program as the foundation for something more ambitious over time: virtual power plant-style programs that aggregate distributed energy resources across a broader customer base, bill credits tied to actual measured demand reduction rather than flat annual payments, and eventually vehicle-to-grid and vehicle-to-load participation as EV adoption grows in Wisconsin.

Wisconsin has significant untapped demand response potential, and this program is a real step toward unlocking it. We look forward to seeing what WPPI and its member utilities build from here.

PSC Critizes, Modifies, and Approves Alliant Energy Data Center Contract

PSC Critizes, Modifies, and Approves Alliant Energy Data Center Contract

by | May 7, 2026 | Advocacy, Community, Public Service Commission, RENEW Wisconsin

On Thursday, May 7, the Public Service Commission of Wisconsin (PSC) approved Alliant Energy’s contract with Meta regarding their data center in Beaver Dam, but not before criticizing their lack of transparency and significantly modifying the contract. Modifications included safeguards requiring the utility to cover transmission costs and to address the potential for underpayments from the data center.

The PSC was clear today in its decision regarding Alliant Energy’s contract with Meta—Wisconsin utilities must be more transparent about their relationships with data centers and ensure that not a single cent of the costs of powering data centers is passed on to Wisconsin families and small businesses.

“I want it to be clear that whether you’re a large load customer coming in to Wisconsin for the first time or a regulated entity familiar with our process, transparency, and by that I mean actual and real transparency, is a foundational expectation and a necessity,” Commissioner Summer Strand said. “Frankly, transparency is quite often mutually beneficial, and I don’t think it needs to be this difficult, so I was a little disappointed, and initially, it was like pulling teeth here to increase the transparency.”

We are encouraged by the PSC signaling that they want utilities not only to place greater emphasis on transparency, but also to have a Very Large Customer tariff that is the same for each data center in their territory. This makes it easier to ensure that each data center pays the same and that all of them pay their own way in Wisconsin.

Though we would have preferred a rejection of this contract today, there was a clear win. As it should be, the PSC is ensuring it is easy for us to verify that data centers are paying for their own energy and infrastructure.

We also encouraged the PSC to be proactive in urging data centers to invest in clean energy technology, especially emerging or cutting-edge technologies. These new neighbors have the resources to spur growth in the world of renewables, and if they intend to be responsible neighbors, they will help us expand our renewable energy footprint rather than stall our progress in combating climate change.

PSC’s Preliminary Decision: Data Centers Will Cover Their Costs

PSC’s Preliminary Decision: Data Centers Will Cover Their Costs

by | Apr 27, 2026 | Advocacy, Policy, Public Service Commission, RENEW Wisconsin, Renewables

Last Friday, April 24, the Public Service Commission of Wisconsin (PSC) unanimously approved an electricity rate plan for data centers and other “Very Large Customers” (VLC) in We Energies’ service territory. This decision will protect Wisconsinites from shouldering the financial burden of the energy and infrastructure costs associated with data centers.

RENEW Wisconsin submitted comments in support of this decision to protect Wisconsin ratepayers. We also asked the PSC to include considerations such as energy efficiency and renewable energy in their decision-making process. Meaning these corporations with massive financial means should, at the very least, be investing in building and operational efficiency, while also signing contracts with utility-scale solar projects.

We also highlighted the importance of these large corporations sticking to their own sustainability goals and how, through their vast access to capital, they could incorporate emerging or cutting-edge renewable energy resources to mitigate their contributions to climate change.

As our Policy Director, Andrew Kell, said in his comments to the PSC, “Data centers have adequate resources to become key innovators and provide the ‘technology push’ and ‘demand pull’ required for these programs, technologies, and infrastructure to scale up and flourish.”

While we don’t have guarantees that data centers will lead the charge on innovation as it relates to renewables, we do at least have a strong indication that the PSC will continue to protect ratepayers in future proceedings related to data centers.

“The decisions we’re making here today will not be limited to this docket,” said PSC Commissioner Kristy Nieto. “They will shape future proceedings, future investments, and the trajectory of the utility system itself.”

The PSC also determined that the energy demand threshold for a VLC to qualify for this rate structure should be reduced from 500 megawatts (MW) to 100 MW, the level at which new energy generation projects typically require PSC approval. The PSC also made it mandatory for eligible VLCs to subscribe.

VLCs will also need to fund and subscribe to portions of multiple new power generation projects, or entire projects, as they will be the driver of much of the state’s new energy demand.

We are still waiting for the final written order for this decision, but we are glad that PSC’s preliminary decisions align with what many public comments submitted stated, which is that data centers must pay the full costs of the energy and infrastructure they require.

As data center development progresses, RENEW aims to collaborate with data centers and strongly encourage them to drive and fully pay for cutting-edge clean energy resources. If data centers do in fact strive to incorporate into communities, they should help to ensure that we can create a sustainable, zero-carbon future.