Sigma has an extremely powerful and flexible engine for calculating charges. Flexible charging methodologies allow you to define your own utility tariffs, supporting the billing of both domestic and non-domestic (SME & I&C) tenants. Recharging of utilities to domestic users is governed by strict industry rules, and you can be sure that your billing adheres to them.

Different simple or complex tariff structures can be created and applied for each Tenant or group of Tenants, ensuring you have the flexibility to apply the most suitable billing methodology in each case and recover the full fees appropriate to each Tenant. The tariffs can be changed at any time and are fully effective dated and audited supporting price uplifts, addition of new charges and changing the calculation method. Tariffs will allow you to group or itemise the charges as you require – including include consumption-based charges, standing charges, fixed charges and capacity charges.

• Sigma will also support the ability to calculate charges using complex formulae, sourcing and manipulating data from a variety of different sources:
• Time banded consumption charging (e.g. day/night or weekday/weekend rates)
• based on incoming supplier invoices (e.g. dynamically calculate the unit rate to be used or charge a proportion of the total cost)
• data associated to the Tenants supply (e.g. agreed capacity, floor area or EAC)
• using the output from another calculated charge as an input to other charges (e.g. proportion of main energy charge as an administration fee)

A few scenarios are provided below which outline the type of charging that the system can support:

• Specified Contract Rates and Sub Metered Consumption
• Specified Contract Rates and Sub Metered Consumption with Shared Area Apportionment
• Passing through Supplier Invoice Unit Rate with Sub Metered Consumption
• Generated and Import Energy Recharging
• CHP Boiler Recharging.

Click on the links below for further details:

• Cost Definitions and Tariffs
  • Creating a Cost Definition and a Tariff
    • Example Tenant Billing Charge Lines and Cost Definitions
  • Viewing / Modifying an existing Cost Definition or Tariff
  • Updating Cost Definition Rates
  • Volumetric Consumption Conversion
    • Showing Calorific Value Calculation Steps on Bills 
• Tenant Ad-Hoc Charges
  • Charge Groups for Ad-Hoc Charges
  • Maintaining Ad-Hoc Charges 
• Tariff Connectors 
  • Creating Tariff Connectors
  • Updating Tariff Connectors