The Holy Cross Energy story in 2026 is a different conversation than anything happening in the Denver metro. The cooperative has been one of the most aggressive renewable utilities in the country for years, and it pays its members real money to install solar and storage. The program rules changed on April 1, 2026, the state storage credit expires at year end, and the design discipline at 8,000 feet is genuinely different from the work we do on a Wash Park rooftop.

This post walks through what Holy Cross actually pays in 2026, where the value lives, and what a Vail or Aspen address needs from a solar contractor that a Denver address does not.

Holy Cross Energy is a member owned electric cooperative headquartered in Glenwood Springs. The cooperative serves roughly 45,000 members across Eagle, Pitkin, and Garfield counties, with smaller pockets in Mesa and Gunnison. That footprint covers Vail, Avon, Edwards, Eagle, Gypsum, Glenwood Springs, Carbondale, Basalt, El Jebel, Aspen, Snowmass Village, and most of the unincorporated mountain valleys those towns anchor.

If you are on Xcel, you are not on Holy Cross. The two utilities do not overlap. Most homes on the I-70 corridor west of Vail Pass and most of the Roaring Fork Valley sit inside Holy Cross territory, and the program rules are completely different from anything in the metro.

Holy Cross has been one of the most aggressive renewable utilities in the country for years. The cooperative hit nearly 100 percent renewable supply for an entire month in 2024, and its long range plan targets 100 percent clean energy by 2030. That posture matters when you are designing a solar project. Programs change, but the underlying signal is that the utility is actively encouraging on site generation and storage rather than tolerating it.

Holy Cross calls the residential renewable rebate the WE CARE incentive. The structure changed on April 1, 2026, and a lot of homeowners are still working off old numbers from 2025 quotes.

For applications submitted before April 1, 2026, the older tiered rebate of $250 per kW for the first 6 kW and $100 per kW for the next 6 to 25 kW still applies. Those projects must be installed and have permission to operate by August 31, 2026. After that the legacy rate is gone.

For new applications submitted on or after April 1, 2026, the rebate is a flat $100 per kW up to 25 kW. That caps the project rebate at $2,500 regardless of system size. To qualify, the sale must be finalized and the rebate registered by June 30, 2026, and the installation must be completed by December 31, 2026. Missing either deadline disqualifies the system. The current rules and forms live on the Holy Cross 2026 residential rebates page.

The lifetime cap on cooperative renewable incentives is $30,000 per member, which mostly matters on commercial or multi system properties. On a typical 8 to 10 kW residential design the rebate runs $800 to $1,000.

The headline number on a Holy Cross project is not the solar rebate. It is the battery program. Power+FLEX is the cooperative’s residential energy storage program, and it pays members for letting Holy Cross use a portion of their battery during system stress events.

The 2026 program pays $10.30 per kW of Enrolled Battery Capacity per month for five years. Members can enroll 100 percent, 75 percent, or 50 percent of their battery’s eligible capacity, with the credit scaled accordingly. On top of the monthly credit, the program pays an upfront incentive of up to $500 per kW of enrolled capacity, capped at $12,500 per home.

For a typical 13.5 kWh single Tesla Powerwall 3 enrolled at 100 percent, that math is roughly $618 in upfront incentive and around $556 per year in monthly credits for five years. Stack a second battery and the numbers roughly double. A FranklinWH aGate plus aPower setup, which Holy Cross added to the approved equipment list in late 2025 alongside Powerwall and Enphase, runs similar economics.

The program is open to new builds and retrofits, and the battery has to be paired with on site solar to qualify for the full benefit. Apollo Energy designs the storage size around the home’s actual evening load profile rather than maxing out the enrollment, because oversized batteries cost real money up front and the marginal monthly credit eventually flattens.

Holy Cross net metering covers any system up to 25 kW nameplate. The cooperative allows members to size up to 200 percent of historical annual usage at the meter, which is the same generous cap United Power offers and double what some utilities allow. That extra room matters when a homeowner is adding an EV, converting from propane to a heat pump, or building out a future ADU.

Excess kWh credits roll forward at full retail value during the year. Any continued surplus at the annual true up gets cashed out at the cooperative’s avoided cost rate, which sits well below retail. The practical implication is that Holy Cross rewards careful sizing rather than overbuilding for paper future use.

The 2026 interconnection process runs through PowerClerk, which Holy Cross adopted in 2025. Members create an account, submit the application with the engineering package, pay the $100 study fee on systems above 12 kW, and the cooperative reviews against the Holy Cross interconnect guidelines. For a clean residential project, study and approval typically run two to four weeks. Permission to operate follows after install, inspection, and meter swap.

Most Denver solar designers anchor production estimates to a 5,280 foot baseline because that is what their crews see all day. At Holy Cross altitudes that baseline understates production materially. Thinner atmosphere, higher direct beam radiation, lower module operating temperatures in cold weather, and longer shoulder season clarity all push the same panel harder than it works in the metro.

The catch is that snow loading, wind zones, and roof geometry are tougher at altitude. Apollo Energy designs to the actual site rather than a generic Vail or Aspen number. We pull the NREL National Solar Radiation Database for the address, model snow shedding off the array using local slope and exposure data, and validate the racking and attachment pattern density against the local wind speed and snow load code rather than the Denver default.

A meaningful share of Holy Cross meters belong to second homes and short term rentals. The economics on those properties look different from a full time primary residence, and the design choices follow.

A second home with low winter occupancy generates more excess production than a full time home and burns through net metering credits more slowly. That favors a tighter system size matched to actual annual use rather than the 200 percent cap, because credits cashed out at avoided cost are worth a fraction of retail. A battery becomes more valuable for a different reason on these properties. Outage frequency at altitude is higher, weather events are more severe, and an unattended home that loses power for 48 hours can mean burst pipes and a five figure insurance claim.

Short term rental properties shift the calculation again. Occupancy is concentrated, evening loads spike during ski season, and EV chargers in the garage pull hard during a guest stay. The Power+FLEX monthly credit applies the same way, but the load shaping value of the battery is real because rental nightly rates indirectly hinge on the property never going dark mid stay. Apollo Energy walks every short term rental project through both the production model and the outage hardening case before recommending a battery size.

Mountain installs are not a Denver job at higher elevation. The design discipline is different and the install execution is different.

Snow shedding off a steep array can pile against a chimney, dormer, or vent stack and tear flashing on the way down. We model snow paths and add snow guards or modify the array layout to keep skid loads off vulnerable assemblies. Wind zones in the upper Roaring Fork Valley and the upper Eagle Valley can spike to category three exposure on exposed ridgelines, which doubles the racking attachment density compared to a sheltered urban roof. We design to local code rather than to the Denver default, which is why a Holy Cross territory project sometimes shows more rail and more fasteners than a comparable Boulder system.

Wildfire defensible space rules also shape array siting in some jurisdictions. Eagle County and Pitkin County both have evolving ignition resistant construction guidance, and the local fire authority occasionally pushes back on conduit routing or roof penetration choices that look fine on a metro installation. Apollo Energy reviews the specific authority having jurisdiction at the address before the engineering package goes in, because a redo at this elevation is expensive and time critical when the snow window closes early.

Every Holy Cross member captures the same Colorado state and federal incentives that apply across the rest of the state. They stack with the cooperative’s program rather than replacing it.

The 25 percent up front federal incentive on residential solar applies to panels, inverters, racking, wiring, labor, permits, and interconnection costs. Battery storage qualifies when charged primarily from the solar array. On a typical $40,000 Holy Cross project that includes a battery and the altitude install premium, the federal layer alone runs roughly $10,000.

The Colorado sales and use tax exemption removes state sales tax from the equipment line. Local sales tax treatment varies by jurisdiction across Eagle, Pitkin, and Garfield counties, and a Vail address handles it differently from a Carbondale address. Confirm with your installer before signing.

The Colorado property tax exemption keeps your assessed value flat even as the system adds market value to the home. That is an ongoing benefit that compounds across the system’s 25 to 30 year life and matters more on a high value second home than on a starter house in the metro.

The Colorado 10 percent residential energy storage tax credit on form DR-1307 covers battery equipment, sales tax, and freight. Labor and permit fees are excluded. The credit is non-refundable, cannot be carried forward, and expires December 31, 2026. For a Holy Cross member adding a battery to capture Power+FLEX credits, this state credit is the deadline that pulls the project forward into 2026 rather than 2027. Our deeper write up lives on the Colorado battery storage tax credit post.

The pieces only line up like this for one more calendar year. The federal 25 percent up front incentive applies in 2026. The Colorado 10 percent storage credit expires December 31, 2026. The legacy WE CARE solar rebate is already gone for new applications. Power+FLEX upfront and monthly credits remain available through 2026, but the program has tightened year over year and the next iteration may look different.

If your home is in Vail, Avon, Edwards, Eagle, Gypsum, Glenwood Springs, Carbondale, Basalt, El Jebel, Aspen, or Snowmass and your bill says Holy Cross Energy, the design conversation is yours to have right now. We pull your 12 months of Holy Cross usage, model production at your actual elevation against your actual roof, and structure the project to land every layer of incentive before the year end clock runs out.