By schedule
Invoiced by schedule with advance invoices.
A complete B2B platform for trading electricity with end customers.
One system for the full lifecycle — from signing the contract to settling the invoice. No spreadsheets over email, no manual hand-off of data between departments.
01
What it is
WTEnergy runs the full customer lifecycle of an electricity trader. Supply contracts and addenda with clients, index-based pricing offers, 15-minute delivery schedules, imbalance settlement, advance and final invoicing. Every stage connects to the next in a single process.
02
Who it is for
For licensed electricity traders working with direct and indirect customers and producers, SLP — residential consumers, using exchange indices and formula-based pricing, who need automation of settlement and invoicing and a self-service customer portal.
-
Offer
-
Contract
-
Schedule
-
Readings
-
Invoicing
A complete set of modules for every stage of the trading process.
The platform unites management and sales with operations and invoicing. Each module works on its own and together with the rest; data moves without being copied by hand.
03
Management and sales
Clients, contracts and addenda
Delivery points and contacts
Pricing offers with formula logic
Exchange indices and market prices
Deposits and excise certificates
04
Operations and invoicing
15-minute delivery schedules
Metered readings and imbalance settlement
Advance and final invoicing
Excise and customs reports
Customer portal and notifications
A complete client base and contract structure for every counterparty.
Counterparties with billing and contact persons, users with system access, collateral and deposits per contract, excise certificates with history. Registers of contracts and addenda with expiry notifications.
Addendum types — clients and producers
By consumption
Invoiced by metered readings.
By SLP
Standardized load profile.
Producers
For producers, by metering.
Metering points with delivery period. Active, future and expired states. A change log on every client, contract and addendum.
Formula-based pricing with exchange indices and automatic calculation.
Pricing offers are built on a formula — a combination of one or more indices, weights and fixed add-ons. The platform computes a price for every 15-minute interval. The same offer plays three roles: base, fixing and balancing.
Pricing offers
Formula with +, −, ×, ÷ operations
Multiple indices with different weights
Coefficients, percentages and fixed add-ons
Calculation for each 15-minute interval
Base, fixing and balancing offer
Price components and imbalance prices
Exchange indices
Automatic import from IBEX (API)
15-minute granularity
Index quotes for forward prices
Standardized load profiles
Graphical visualization and export
Elements of an offer formula
EUR / MWh
0,92
×
IBEX DAM
+
0,08
×
IBEX IDA
+
4.50 EUR/MWh
+
imbalance
Base
Fixing
Balancing
Price for interval 14:15 —
87.45
EUR/MWh
Exchange indices
Coefficients
Fixed add-ons
15-minute granularity with automation of input data.
Schedules are the central element for schedule-based addenda. The platform runs on a 15-minute tick with daylight-saving handling, supports manual entry, XLSX import and automatic delivery from external systems. Metered readings are pulled automatically from the DSO companies.
Exchange — 24 hours, 15-minute intervals
15 min
00:0006:0012:0018:0024:00
Exchange price download from
● integration · IBEX API
EVN Bulgaria
Electrohold
Energo-Pro
15-minute schedules
For consumption and production
Entry by operator or by client
XLSX import
Automatic delivery from external systems
Per point or aggregated per addendum
Metered readings
Automatic pull from the DSOs
API certificate management with auto password rotation
Network services per point
Readings by number for inactive points
Validation before issuing an invoice
The full cycle from imbalance to payment in one process.
Imbalance settlement is generated per addendum, point or group of points, including for producers. Invoicing covers advance and final invoices by three methods — schedule, readings and SLP — with PDF and XLSX export and email delivery.
05
Imbalance settlement
Generation of a settlement document per addendum and period. Grouping of points for joint settlement. Own and external imbalance and by consumption. A separate process for producers.
06
Invoicing and payments
Advance and final invoices per addendum or point. Three methods: schedule, readings, SLP. Balancing invoices for producers and consumers. Management of liabilities, installments and excise readings.
Output documents
Your clients get their own sign-in to the system.
Each client logs into a portal with access only to their own data. They submit 15-minute schedules manually or via XLSX import, review metered readings per point with Excel export, browse invoices and liabilities, submit price-fixing requests, confirm or decline offers and sign excise documents via BTrust directly in the browser.
The result: fewer emails, fewer phone calls and less manual data hand-off between the trader and the client.
Requests and signing
Price fixing W/M/Q/H/Y
Requests, confirmation and reversal
View of indices and quotes
Notifications and messages
Request
Period
Q3 2026
Volume
500 MWh
Time
14:00
Client
→
Offer
Price
91,50 EUR/MWh
Valid
30 min
Until
14:30
Operator
→
Acceptance
Confirmed
91,50 EUR/MWh
Time
14:23:07
Action
confirms
Client
→
Signing
Document
signed
Time
14:28
BTrust
📎 file
Client
Operator
Connected to the systems you already use.
Exchange prices arrive automatically from IBEX via API. Readings are pulled securely from the DSO companies through an API with its own certificate management. Electronic signing goes through BTrust. Invoices and client data flow to the accounting system.
IBEX (BNEB)
DSO companies
BTrust
WTEnergy
Accounting system
External systems
Own REST API
The system keeps working when the trader is away from the screen.
Automation
Schedule and exchange-price import, automatic API password rotation for the DSOs, generation of a base next-day schedule, excise notifications and backups all run on a schedule.
Audit and traceability
Every change to a client, contract, index and system setting is kept in a log with user, time and old/new value. Sign-ins are recorded too. The answer to an audit is one search away.
Permissions and roles
Three core roles — administrator, operator and client — with granular control over module access. IP restrictions for operators. Access changes without a restart or migration.
Full visibility and audit over operational and financial flows.
Business and financial reports for pre-invoice quantities, expected cash flow and forecast debt, payments and deposits. Customs reports for excise with adjustments. Excel export of every key report.
07
Business and financial reports
Quantities before invoicing, by point and from invoices
Expected cash flow and forecast debt
Client payments, installments and deposits
Customs excise reports with adjustments
Excel export of all key reports
08
Audit, permissions and roles
Full change log on clients, contracts and addenda
History of indices, offers and system settings
Sign-in log and BTrust status
Roles: administrator, operator, client
Granular module access and IP restrictions
Supported scopes
Operational
Financial
Administrative
A specialist partner for energy-market software.
Deep knowledge of electricity trading, experience with IBEX (BNEB) and the DSO systems in Bulgaria, coverage of the regulatory requirements for excise. Proven, production-ready integrations and a fast response to market changes.
01
Sector expertise
Deep knowledge of electricity trading, experience with IBEX (BNEB) and the DSO systems in Bulgaria, and coverage of regulatory excise requirements. Proven integrations, running in production.
02
A ready B2B platform
A complete customer lifecycle out of the box. Customer portal, BTrust signing, REST API. Automation that saves hours every day. Support and ongoing feature development.
Value for the trader
Request a demo
See the platform with your contracts and exchange prices.
The platform presentation takes 45 to 60 minutes. You will learn about the core features, how it works, and what the benefits are for your clients. We will walk through the specific processes you want to optimize.