⚡ Monthly Report · May 2026
$4.26 saved this month
2025 Ford Lightning Flash · Emporia EMEVSE1 · Enphase IQ Gateway · El Dorado Hills, CA
Net Savings
$4.26
vs. gas F-150
CO₂ Avoided
478.6
kg this month
EV Charged
517.0
kWh
Solar Generated
1720.6
kWh
⚡ Energy Flow — Solar & Grid → Home & EV
🔋 EV Charging
Total Charged517.0 kWh
Sessions10
Charging Hours65 hr
Days Charged12 / 31
Avg Session6.5 hr · 51.7 kWh
Avg Rate8.0 kW
Longest Session13 hr
Off-Peak100.0% (517.0 kWh)
Peak kWh0.1 5–8PM WD
Charging Cost$316.86
Est. Miles1292 mi
Efficiency2.5 (EPA est.) mi/kWh
☀️ Solar
Generated1720.6 kWh
Home Consumed1839.6 kWh
Net Grid Import119.0 kWh
Solar → EV77.0% (398.0 kWh)
Solar Coverage93.5% of home
Self-Consumed100.0%
Avg Daily55.5 kWh/day
Best Day66.4 kWh
Est. NEM Credit$0.00
🌤️ Weather
Sunny Days15 <30% cloud
Partly Cloudy7 days
Overcast3 days
Rainy Days6 days
Avg High77.4°F
Avg Low54.4°F
Precipitation1.54 in
Sunshine Hours389.0 hr
Irradiance809.1 kWh/m²
Panel Yield2.13 kWh per kWh/m²
🌿 Environmental Impact & Fuel Savings
Net Fuel Savings
$4.26
this month vs. gas F-150
CO₂ Avoided
478.6
kg · ≈ 23 trees/yr
Gas Equivalent
$321.12
F-150 XLT, 24 MPG
Gallons Saved
53.8
not purchased
Gas Price
$5.96/gal
2026-06-01
☀ Miles on Sunshine
995
solar-powered miles
📊 Daily Solar Generation
💰 Cost Per Mile — EV vs. Gas
🤖 Gemini Analysis
In May, your solar system generated 1720.6 kWh, covering 93.5% of your 1839.6 kWh home consumption, resulting in a net import of 119.0 kWh from the grid. EV charging consumed 517.0 kWh, all off-peak, at a marginal cost of $316.86, with 77.0% offset by solar.
Observations
1Your solar generation of 1720.6 kWh was strong, averaging 55.5 kWh/day, which is expected given the 15 sunny days and 389.0 sunshine hours in May. The solar yield of 2.13 kWh per kWh/m² irradiance indicates efficient panel performance.
2Despite 100% off-peak EV charging, the marginal cost of $316.86 for 517.0 kWh is high, reflecting the current off-peak rate of $0.46614/kWh. This cost is a significant portion of your overall energy expenses.
3You achieved a net fuel savings of $4.26 for the month, with an EV cost/mile of $0.2452 slightly lower than the gas cost/mile of $0.2485. This indicates that while savings are present, the difference is minimal given the current energy rates.
Optimization Suggestions
→Consider shifting more high-consumption household activities to off-peak hours to further reduce your overall grid import and maximize the value of your solar generation, especially since you were a net importer this month.
→Explore options for time-of-use optimization for EV charging. While 100% off-peak is good, investigate if any further rate plan adjustments or smart charging features could lower the marginal cost per kWh.
→Monitor your solar panel cleanliness, especially after rainy periods, to ensure optimal performance. While yield is currently good, regular cleaning can prevent efficiency degradation from soiling over time.
⚙️ Assumptions & Data Sources
Electricity rates: Combined PG&E E-TOU-D delivery + Pioneer Community Energy generation. Peak (5–8 PM weekdays): $0.53632/kWh, off-peak: $0.46614/kWh (Winter season). ⚠ Summer rates estimated — update when June 2026 bill arrives.
Charging cost: Marginal only — energy + NBC 0.0941/kWh + PCIA 0.0526/kWh, minus NEM generation credit (−$0.0206/export kWh). Base Services Charge ($0.79343/day) and Franchise Fee excluded.
Gas price: $5.96/gal — CA regular unleaded, EIA series EMM_EPMR_PTE_SCA_DPG, period 2026-06-01.
Miles driven: Estimated at EPA 2.5 mi/kWh (2025 Ford Lightning Flash); set FORDPASS credentials for actual odometer data. Gas reference: 2025 F-150 XLT 2WD 2.7L EcoBoost, 24 MPG (EPA). CO₂: 8.89 kg/gal (EPA).
Solar offset: max(0, generation − (consumption − EV charging)). Timing-dependent estimate.
Weather: Open-Meteo Historical Archive API, El Dorado Hills CA (38.68°N, 121.08°W).
Charging data: Emporia pyemvue API (hourly resolution). Solar data: Enphase Enlighten API v4.
AI narrative: Google Gemini (gemini-2.5-flash), 2026-06-06. Advisory only.
Charging cost: Marginal only — energy + NBC 0.0941/kWh + PCIA 0.0526/kWh, minus NEM generation credit (−$0.0206/export kWh). Base Services Charge ($0.79343/day) and Franchise Fee excluded.
Gas price: $5.96/gal — CA regular unleaded, EIA series EMM_EPMR_PTE_SCA_DPG, period 2026-06-01.
Miles driven: Estimated at EPA 2.5 mi/kWh (2025 Ford Lightning Flash); set FORDPASS credentials for actual odometer data. Gas reference: 2025 F-150 XLT 2WD 2.7L EcoBoost, 24 MPG (EPA). CO₂: 8.89 kg/gal (EPA).
Solar offset: max(0, generation − (consumption − EV charging)). Timing-dependent estimate.
Weather: Open-Meteo Historical Archive API, El Dorado Hills CA (38.68°N, 121.08°W).
Charging data: Emporia pyemvue API (hourly resolution). Solar data: Enphase Enlighten API v4.
AI narrative: Google Gemini (gemini-2.5-flash), 2026-06-06. Advisory only.