Energy Savings & CO2 Calculator
A CFO-grade planning estimate: annual savings, NV Energy incentive, payback, SIR and carbon reduction.
How much could my facility save?
Enter your facility and the upgrades you are considering. The calculator applies industry-standard engineering formulas to estimate kWh and kW saved, annual and 10-year savings, an estimated NV Energy incentive, net cost, payback, ROI, SIR and CO2 reduction. Your headline savings are free; the full report unlocks with your contact details.
Tell us about your facility
Select any combination of upgrades
USES Power Shaver is selected but has no verified savings % yet, so it is excluded from savings. Savings are verified per site through metering.
Get payback, incentive estimate, CO2 and the 10-year view
Free. We send a copy of your results, and a consultant can review them with you.
Energy Savings Report
Prepared for ·| Annual kWh saved | |
| Peak kW reduced | |
| Annual energy savings | |
| Annual demand savings | |
| Annual gas & water savings | |
| 10-year utility savings | |
| Operational savings (avoided downtime, separate) | |
| Estimated project cost | |
| Estimated utility incentive (Estimated, subject to program approval) · capped at 50% of cost | |
| Net cost | |
| Simple payback | |
| Simple ROI (annual) | |
| Savings-to-Investment Ratio (15 yr) | |
| IRR (15 yr) | |
| NPV at 5% (15 yr) |
Savings by technology
10-year cumulative savings
Project cost vs. incentive
CO2 reduction
metric tons CO2 per year
passenger cars off the road for a year
tree seedlings grown for 10 years
homes' electricity for a year
Estimates are for planning purposes only and are based on the inputs provided and industry-standard engineering assumptions. Actual savings and incentives are confirmed through an on-site audit and utility program approval.
Methodology & Assumptions
Lighting: kWh = fixtures × (Wexisting − WLED) × hours ÷ 1,000. kW demand = fixtures × (Wexisting − WLED) ÷ 1,000.
Lighting controls (NLC): kWh = post-LED kWh × controls factor (default 0.25). No demand reduction is assumed.
HVAC: kWh = tons × 12 × EFLH × (1/SEERold − 1/SEERnew). kW = tons × 12 × (1/EERold − 1/EERnew). Default EFLH 2,000 hours for Southern Nevada (editable).
Refrigeration: annual refrigeration kWh (or doors × 2,500 kWh planning estimate) × savings % (default 15%).
EMS / VEM: whole-building annual kWh × savings % (default 10%, bounded 5–15%).
VFDs: kWhbase = HP × 0.746 × load factor (0.75) ÷ motor efficiency (0.92) × hours. kWhVFD = kWhbase × (speed %)³ ÷ drive efficiency (0.97). Savings = kWhbase − kWhVFD, per motor × count. Peak kW reduction = average kW saved × 0.5 coincidence (conservative).
USES Power Shaver: savings % × connected panel kWh and kW. The % must come from verified M&V data and is verified per site through metering; no default is applied.
HVAC controls / CO2 DCV: HVAC kWh × controls % (default 10%). DCV adds ventilation share (30%) × DCV % (20%) on the remaining load.
Predictive maintenance: downtime cost per hour × hours avoided per year, reported separately as operational savings (not energy) and excluded from payback.
Water & gas: therms × % (default 5%) × gas rate; gallons × % (default 5%) × water rate per 1,000 gallons.
Financials: energy $ = kWh × rate; demand $ = kW × demand charge × 12. Ten-year savings sum each year, with optional 3% annual escalation. Incentive = kWh × admin-set $/kWh + kW × admin-set $/kW, capped at 50% of project cost (NV Energy 2026 retrofit rule). Net cost = project cost − incentive. Payback (months) = net cost ÷ (annual savings ÷ 12). ROI = annual savings ÷ net cost. SIR = present value of 15 years of savings at a 5% discount rate ÷ net cost. IRR and NPV use the same 15-year cash flows. Project cost uses editable planning defaults per fixture, ton, door, HP, sensor or square foot unless you enter a quoted cost.
CO2: metric tons = kWh × grid factor (0.0002865 t/kWh), from U.S. EPA eGRID2023 (released 2025), NWPP subregion total output emission rate of 631.7 lb CO2/MWh, which covers Nevada. Gas: therms × 0.0053 t CO2/therm (EPA).
Equivalencies (EPA Greenhouse Gas Equivalencies): passenger cars = CO2 ÷ 4.6 t/yr; tree seedlings grown 10 years = CO2 ÷ 0.060 t; homes' electricity for one year = CO2 ÷ 4.798 t.
All constants live in one editable configuration object at the top of the calculator script (calc.js), version 2026.10.
Utility capital pays for part of the upgrade
The calculator estimates an incentive from an admin-set rate per kWh and per kW, capped at 50% of project cost under NV Energy's 2026 retrofit rules. Your consultant replaces that estimate with program-specific figures after the audit.
- We identify every eligible NV Energy prescriptive and custom incentive.
- We stack lighting with controls to raise the incentive 20–50%.
- We prepare and submit the application, then verify savings under IPMVP.
Related solutions
Frequently asked questions
How accurate is the calculator?
It applies industry-standard engineering formulas to your inputs. It is a planning estimate; an on-site audit and utility approval confirm actual savings and incentives.
Where does the CO2 factor come from?
U.S. EPA eGRID2023, NWPP subregion (which covers Nevada): 631.7 lb CO2 per MWh. Gas uses EPA's 0.0053 metric tons CO2 per therm.
Why is predictive maintenance reported separately?
Avoided downtime is an operational saving, not an energy saving, so it is shown separately and excluded from payback.
Why is there no default for the Power Shaver?
Power Shaver savings are verified per site through metering, so we only use a percentage backed by verified M&V data.
What happens after I unlock the report?
You see the full report and can print it. A consultant may contact you to review it; you can opt out at any time.
Turn Your Overhead Into Net Profit.
Book a no-pressure consultation with a veteran energy consultant. We will show you the savings, the incentive and the payback before you commit.
Every month you wait is money lost to inefficiency. Incentive funding is limited per program year.