Solar & batteries with Town of Estes Park Power and Communications

Any home can install up to 10 kW DC. Above that, the system’s annual output can’t exceed 120% of what the home used over the previous 12 months, and applications over the limit are sent back to be resized. If the house has less than a year of history, the Town averages what’s available (at least four months); new construction starts at the default 10 kW cap.

Expanding an existing array uses a formula: the Town adds your self-consumed solar to what you drew from the grid to find total use, multiplies by 120%, and subtracts what your current array already produces. Contact the utility before designing an expansion — they’ll need 12 months of production data.

If you bought an EV less than four months ago, the Town will add 3,000 kWh to your consumption history for sizing — with proof of purchase and registration at the service address. After four months, the car’s load is already in your history. It’s one of the few Colorado utilities that spells this out.

Adding a battery to existing solar requires a new interconnection agreement with updated plans before it’s installed. A standalone backup battery — no solar — still requires a Back-Up Energy Notification with system drawings before installation. Meter collar adapters are accepted only if they’re on the Town’s approved list.

Inside town limits, the building permit comes from the Estes Park Building Division, electrical permits and inspections come from the State, and the contractor needs a Town business license. Outside town limits, the permit comes from Larimer County, and ground mounts in unincorporated Larimer County need zoning approval. The system stays off until the Town signs Exhibit B of the agreement, which serves as permission to operate.

Estes Park puts most of the distribution system’s fixed costs into the monthly customer charge, because many customers are part-year residents or net-metered. Solar can offset the energy portion of your bill, but not the customer charge — so payback depends heavily on how many kWh you actually use year-round.

Estes Park's net-metering policy (Ordinance 20-07) allows commercial systems up to 25 kW DC or 120% of the prior 12 months' consumption, whichever is larger; applications beyond the 120% rule are declined. Monthly kWh roll 1:1 and the annual true-up is credited at avoided cost (about the town's wholesale rate less a cent). Small Commercial covers accounts up to 35 kW of demand; Large Commercial (over 35 kW in any two months) is billed on its highest 15-minute demand with a $75 monthly minimum, and its bills are rising 6.5% a year for 2026–2028 on Platte River increases. A $75 enrollment and $20 monthly net-metering fee are listed in the ordinance (verify current). No town solar rebate; permits for unincorporated addresses run through Larimer County.

Demand charges are the part of a commercial bill panels alone don't reliably cut, which is why our commercial proposals in Estes Park Power territory usually model a peak-shaving battery alongside the array. County-by-county detail is on our commercial pages.