WattWorks by Forged Renewables LTD

Configuration

Welcome to the WattWorks Calculator ⚡

Use this tool to see how solar PV and battery systems can impact your energy bills.

Simply enter your electricity usage and tariff details, add your proposed solar or battery setup, and click "Calculate Economics."

You'll see your estimated savings, ROI, and payback period based on your inputs.

(Tariffs and results may vary depending on your energy provider and location.)

1. Baseline Usage & Current Tariff ▶

Annual Electricity Consumption (kWh/year)

Standing Charge (£/day)

Unit Rate (£/kWh)

Export Rate / SEG (£/kWh)

2. Solar PV ▶

Include Solar PV

3. Battery ▶

Include Battery Storage

Usable Capacity (kWh)

Round-Trip Efficiency

Max Charge Power (kW)

Allow battery to top up from cheap grid windows

4. Installation Costs ▶

Proposed Installation Cost (£) *

Total cost including battery, inverter, installation, and VAT (if applicable).

Grants or Rebates (£)

Any grants, rebates, or incentives that reduce your out-of-pocket cost.

Cost includes VAT

5. Post-Installation Tariff & SEG ▶

Tariff Preset

Standing Charge (£/day)

SEG Export Rate (£/kWh)

Cheap Window Start (HH:MM)

Cheap Window End (HH:MM)

Cheap Rate (£/kWh)

Standard Rate (£/kWh)

6. Heating ▶

Include Heating Analysis

Configure your system and click "Calculate Economics" to see results.