Read real appliance labels
Model wattages are illustrative. Measure demand when possible and account for startup surges and cycling loads.
SIRAI / ENERGY PLANNING
TaqaWise.
Understand your energy. Plan smarter.
From everyday appliances to outage backup and solar possibilities, bring your household's electricity needs into focus.
Explore your energy plan ↘Free · No account · Four languages
A learning tool for early planning. Results are estimates, not equipment specifications or installation advice.
PLAN WITH CLARITY
Electricity makes everyday life possible. Understanding it should be easier.
TaqaWise is a practical worksheet, not a product catalogue. Enter your appliances, choose what truly matters during an outage, then explore how assumptions change the results.
YOUR ENERGY WORKSPACE
Build a plan you can explain.
Move through four steps and adjust your assumptions at any time.
Your entries stay in this browser. Nothing is uploaded to SIRAI.
01 / 04
What uses electricity in your home?
Add appliances and enter their rated power and daily operating hours. For cycling appliances, estimate equivalent active hours using measured data where possible.
Preset wattages are illustrations, not manufacturer specifications. Replace with your actual ratings.
Daily electricity estimate0 kWh/day
Total connected load0 W
Where does your daily energy go?
A visual breakdown based on your entered hours and wattages.
Daily energy uses watts × hours. Connected load sums rated power and does not predict actual simultaneous demand or motor start-up surges.
02 / 04
Keep the essentials in view.
Choose the essentials in the appliance list. Explore how long a battery might support those loads if they ran continuously at their entered wattages.
Essential continuous load0 W
Essential daily energy0 kWh
Illustrative capacities, not verified Sudan market stock. Age, heat, battery condition, chemistry and inverter losses can substantially reduce usable energy.
Enter total nominal watt-hours, not advertised amp-hours alone.
Use an appropriate value for the specific battery and system.
A simplifying assumption. Real efficiency varies with load.
Choose the period you want to plan for.
Estimated battery runtime—Based on selected essential rated loads assumed continuously on.
Nominal battery for target outage—A mathematical energy estimate, not a recommended battery product.
Why prioritizing essentials matters
All entered loads, continuously—
Only your selected essentials—
A comparison of continuous rated loads, not a prediction of actual appliance duty cycles or safe operating limits.
03 / 04
Explore a solar starting point.
Estimate a preliminary PV array power from daily energy, peak-sun-hours and a performance factor. This is not a site or equipment design.
Use a location- and season-appropriate estimate, not guaranteed sunshine hours.
Illustrative losses for temperature, wiring, conversion, soiling and other factors.
Household daily load—
Preliminary PV array estimate—
Illustrative margin (+25%)—
Simple energy balance only. Solar output varies with location, month, temperature, orientation, shading and equipment. This does not size an inverter, charger, wiring, protection or an off-grid battery system.
04 / 04
Your energy, on one page.
Review the assumptions, compare needs and export a draft for a qualified local installer or energy adviser to examine.
Share only non-identifying details. Never publish water-point locations, movement times or volunteer identities.
This draft is a learning aid. It is not a professional solar system design, electrical certification or SIRAI endorsement.
BEFORE ANY REAL INSTALLATION
Useful estimates. Serious limitations.
Electricity is not just arithmetic. Decisions about equipment, wiring, charging and household safety require qualified local expertise.
Protect battery safety
Do not build or modify battery packs using this calculator. Battery chemistry, protection, ventilation, compatibility and installation require appropriate guidance.
Check local solar conditions
Use location-specific weather and seasonal data; understand shading and daily operating patterns before purchasing equipment.
Plan for people first
Consider medical and accessibility needs, essential lighting, communications and the consequences of power loss. Do not assume a calculated runtime is guaranteed.
For location-specific solar analysis
For a more detailed grid-connected PV energy model, explore NLR PVWatts. It still cannot replace local design, especially for off-grid backup systems.
Explore PVWatts ↗SIRAI / ENERGY PLANNING
Back to SIRAI ↗Understand what matters. Plan with care.
TaqaWise is an early educational planning tool, free to use and not yet field validated by SIRAI.