Go solar with $0 down through a Power Purchase Agreement — we install, own, and maintain the system. You pay a lower rate for the clean energy it produces, and lock in maximum savings with a Tesla Powerwall 3 battery through the expensive 5–10 p.m. SRP peak window.
It’s not your imagination — and it’s not going to stop. A perfect storm of forces is pushing Phoenix-area electricity costs higher every year. Here’s what’s driving it.
In February 2025, SRP’s Board of Directors voted to approve a rate increase that took effect in November 2025 — adding $169 million in base revenue. The average residential customer now pays about $5.61 more per month. But the bigger hit: SRP raised its fixed monthly service charge for single-family homeowners by 50% — one of the highest fixed charges of any public power utility in the entire country. You pay that amount regardless of how little energy you use.
Phoenix has become one of the top data center markets in the world. Over 140 are operating today, with dozens more in the pipeline. These facilities run 24/7 and consume electricity at a staggering scale — peak demand growth from data centers is happening at a rate 100 times faster than all other customer types combined, according to Arizona’s largest utility. Data centers were projected to account for 94% of all energy demand growth in Arizona between 2023 and 2025. That massive new load requires new power plants, new substations, and new transmission lines — all of which drive up the cost of maintaining the grid every homeowner depends on.
Arizona utilities have set new peak demand records three years in a row. In August 2025, Phoenix hit 118°F and SRP hit its highest-ever demand — surpassing even their own forecasts. Arizona households already spend $200–$400 per month on electricity in summer, with A/C running around the clock. As summers get hotter and longer, utilities must build more capacity to handle those short but intense demand spikes — and that cost gets passed directly to you through higher rates and infrastructure charges.
Arizona’s electric grid was not built for 5+ million people, AI data centers, and record-breaking heat waves. Utilities are now spending billions to replace aging equipment, expand substations, and build new transmission lines. APS alone plans to invest over $2 billion per year in system upgrades through the late 2020s. SRP’s approved rate increase specifically cited the need to fund $169 million in new infrastructure. Every dollar of that investment eventually shows up on your bill. And with no cap on how often SRP can raise rates — and no Arizona Corporation Commission oversight of SRP — there is nothing stopping further increases.
The average U.S. residential electricity rate jumped 6.6% between June 2024 and June 2025 alone. U.S. data centers consumed 183 terawatt-hours of electricity in 2024 — over 4% of the entire country’s power use — and that figure is projected to grow 133% by 2030. A Carnegie Mellon University study estimates data centers and cryptocurrency mining could push the average U.S. electricity bill up by 8% by 2030, exceeding 25% in the highest-demand markets. Arizona is one of those high-demand markets. There is no policy fix on the horizon that will reverse this trajectory for homeowners.
You can’t vote on SRP’s rate hikes. You can’t stop data centers from moving into the Valley. But you can lock in your own solar rate today — and stop participating in a system that gets more expensive every year.
Get My Free Savings ReportA PPA is the simplest way to go solar. We handle everything — design, permits, installation, monitoring, and maintenance for 25 years. You simply purchase the clean electricity your panels produce at a fixed rate that’s lower than what SRP charges.
No purchase, no loan. We install the solar system on your roof at absolutely no cost to you. Your savings begin from day one.
Your solar rate is set at signing and stays predictable for 25 years. Meanwhile, SRP’s rates keep climbing. That growing gap becomes your savings.
Panel issue? Inverter problem? All covered — at no cost to you. We’re responsible for keeping your system performing at 90%+ of its projected output.
Your system comes with a guaranteed output level. If it underperforms, you receive a credit — not excuses.
Selling your home? The PPA transfers smoothly to the new owner. Solar homes sell faster and typically for more — it’s an asset, not a burden.
Solar panels generate the most power 8 a.m.–3 p.m. — when SRP rates are cheapest. But electricity costs the most between 5–10 p.m. The Tesla Powerwall 3 bridges that gap: it stores your solar energy so your home runs on free power exactly when SRP charges the most.
Your Powerwall charges automatically during the green window (solar hours), then discharges at 5 p.m. — powering your home through the peak window with near-zero demand on SRP’s grid.
Your solar panels charge the Powerwall 3 for free during super off-peak hours (8 a.m.–3 p.m.). At 5 p.m. when SRP’s expensive window opens, your battery takes over — and SRP barely sees any usage from your home.
On SRP’s demand plans, your monthly charge is driven by your single highest usage spike during on-peak hours. The Powerwall 3 flattens those spikes by supplying stored solar energy — dramatically reducing your demand charge every month.
With 11.5 kW of continuous backup — enough to run your central A/C — the Powerwall 3 keeps your entire home running through Arizona storms and grid outages. Storm Watch automatically pre-charges before severe weather.
Monitor your solar production, battery charge, and home energy use in real time. Set time-based control to perfectly align with SRP’s 5–10 p.m. on-peak schedule — fully automated after setup.
Enroll in SRP’s Battery Partner program and earn additional bill credits when SRP calls on your battery during high-demand grid events — without disrupting your own on-peak coverage.
Every system we design is optimized around SRP’s pricing structure. Knowing which plan you’re on — and how on-peak hours affect your bill — is the key to getting the most out of solar and battery storage.
This is SRP’s premier solar + storage rate plan — purpose-built for pairing with a Tesla Powerwall 3. Your bill has three components: a monthly service charge, an energy charge per kWh, and a demand charge based on your highest 60-minute usage spike during the on-peak window.
The strategy: use SRP’s grid as little as possible from 5–10 p.m. weekdays year-round. Your solar charges the battery all day; your Powerwall powers the home through the peak window. Super off-peak hours (8 a.m.–3 p.m.) offer the lowest energy prices of any SRP residential plan — perfectly matching peak solar production hours.
SRP’s current rate plans shift on-peak hours later into the evening — well after your solar panels stop producing. Export credits for sending excess solar back to the grid have also declined. That means solar by itself provides limited protection during the expensive 5–10 p.m. window.
Solar + Tesla Powerwall 3 = the complete solution. Your panels generate and store energy during the day. Your battery discharges at 5 p.m. Your home runs on stored solar through 10 p.m. with near-zero demand on SRP’s grid — that’s how you maximize savings under today’s SRP structure.
⚠ SRP pilot program — approved through April 30, 2030, available to up to 5,000 customers. Ask us about enrollment eligibility when we connect.
Fill out our 30-second form — name, phone, email. That’s all we need to start building your free Energy Assessment. No utility bill required yet.
We call you, review your SRP rate plan, and design a solar + Powerwall 3 system optimized specifically around your home’s usage and the 5–10 p.m. on-peak window.
We present a clear, simple Power Purchase Agreement with your custom solar rate, projected savings, and everything that’s covered for 25 years. Zero pressure.
Design, permits, HOA paperwork, installation, SRP interconnection, and Battery Partner enrollment — we manage it all from start to finish.
Share your basic info and we’ll put together a free personalized Energy Assessment — including what solar covers during the day, what the Powerwall 3 handles 5–10 p.m., and how SRP’s “Manage Demand” plan can work in your favor.
One of our energy advisors will reach out within one business day.
Thanks! An Interconnect Power advisor will reach out within one business day with your free Energy Assessment + Powerwall 3 savings analysis.