Appliance electricity running-cost calculator — exact running cost at local electricity rates with an efficiency upgrade comparison. For homeowner and energy agents.

Home battery storage ROI and payback calculator — Powerwall vs alternatives, backup-power value, with the IRA 30% tax credit and state incentives applied. For homeowner and solar agents.

Home carbon footprint calculator — household electricity emissions via EPA eGRID factors by state, with a reduction roadmap. For homeowner and climate agents.

Live grid carbon intensity, deterministic. Answers "how clean is the grid right now", "gCO2 per kWh in Germany", "cleanest hour to run a job today". Current intensity + forward curve (to 48h) + cleanest and dirtiest slots, from NESO (GB national + 14 DNO regions) and energy-charts/Fraunhofer ISE (DE FR NL BE AT ES IT NO). No LLM, no key. Pair with /api/energy/compute-window for full job scheduling.

Community solar finder and savings estimator by state — program availability, typical bill savings, and how to enroll for homeowners and renters. For homeowner and renter agents.

Carbon- and cost-aware compute scheduling. Given a region, job length and load, returns the optimal window in the next 48h to run it, with kg CO2 and EUR saved versus running now. Deterministic — computed from the official NESO (GB) and Fraunhofer ISE (EU) forward curves, no model guessing. Honours x-ealna-carbon-max / x-grove-carbon-max carbon budgets.

EV charging cost calculator — home charging cost vs gasoline, off-peak charging strategy, and cost per mile by state. For EV-owner and homeowner agents.

Electricity price forecast and demand outlook — 90-day retail price and demand projection by state. For energy-trader and energy agents.

Power grid status and reliability — demand, capacity, grid stress, and generation mix for major US grids (ERCOT, CAISO, PJM). For energy-trader and energy agents.

Natural gas price and market intelligence — Henry Hub spot prices, storage levels, and a 90-day price outlook. For energy-trader and energy agents.

Electricity rate / price by state — retail electricity rates (cents per kWh) with trend and monthly bill estimates. For homeowner and energy agents.

Renewable energy mix and grid carbon intensity by state — generation mix, carbon intensity, and clean-energy (solar/wind) trend. For energy and climate agents.

Solar panel savings and payback calculator — home solar feasibility with production estimate, payback period, and IRA 30% tax credit analysis. For homeowner and solar agents.

Time-of-use electricity rate optimizer — peak/off-peak rate windows and an appliance-shifting strategy to cut bills for a given utility or state. For homeowner and energy agents.