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What we install
One crew for the envelope, the mechanicals and the array, so the numbers actually add up.
Rooftop solar6 to 12 kW DC arrays sized from your last 12 months of kWh.
Home battery storage13.5 kWh usable, 5 kW continuous, wired to a protected loads panel.
Whole-home energy auditBlower door, thermal scan and a Manual J load, in one visit.
Heat pumpsCold-climate units rated at 5 degrees F, not at 47.
EV charger installLevel 2 at 48 A continuous, with a real panel load calculation.Work out your own numbers
Every tool here runs in your browser on figures you can change. Nothing is emailed to us.
Shading and inverter choiceWatch one shaded module drag a whole string, then switch topology.
Tilt and orientation yieldAzimuth by pitch, as a percentage of the Boulder optimum.
Time-of-use and batteriesShift kWh out of the 3 to 7 pm peak and price the difference.
EV charger load checkNEC 220.83 load calc and the 120 percent busbar rule.
Savings calculatorBill to array size to first-year production, step by step.The people doing the work
Eleven people, one warehouse on Pearl Parkway, and a service radius we can drive in under an hour.
About GreenLeafWhy we stopped selling panels on their own in 2019.
ProjectsSix homes, with the measured kWh a year after commissioning.
Reviews4.8 from 236 reviews across Google and EnergySage (sample).
Field notesWhat we learned on roofs in Boulder, Longmont and Niwot.
CareersThree open roles, pay ranges published (sample).Southmoor Park, Longmont, 2024
No solar, no outage anxiety, just a time-of-use rate and 8.4 kWh a day moving out of the 3 to 7 pm window.
Southmoor Park, LongmontHow it went
Before quoting anything we moved the dishwasher, the laundry and the car charging to after 9 pm and set the thermostat to pre-cool between 1 and 3 pm. That alone took $188 off the annual bill at the sample rates, with no equipment at all.
What remained in the 3 to 7 pm window averaged 8.4 kWh a weekday. At an on-peak price of 23.77 cents and an off-peak price of 8.36 cents, and allowing 90 percent round-trip efficiency, each shifted kWh is worth 14.5 cents in summer.
That is roughly $271 a year against an installed cost of $15,900. We told them plainly that arbitrage alone will never pay this back, and that they were buying resilience and rate insurance with a modest offset.
Two outages in the preceding eighteen months, a home office and a chest freezer. They bought it anyway, with their eyes open, which is the only way we want anyone buying one.
They told us the payback did not work and then helped us buy it anyway for the reasons that did. I trust people who argue against their own invoice.
8.4 kWh a weekday shifted out of the on-peak window, $271 modelled annual value.
Three to four hours on site, a written report in five business days, and a recommendation that might well be to spend less than you planned.
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