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TEAM (Energy Auditing Agency Ltd)

Sigma Sustainability and Energy Management Software

TEAM Sigma Software as a Service. Sigma Sustainability and Energy Management software enables recording of utility bills (EDI/paper), meter, waste and transport data plus related building data to validate bills, analyse and report on costs, consumption and emissions from individual meters to entire estates. Provides advanced and flexible reporting capabilities.

Features

  • Central utilities database storing cost and consumption in one place
  • Automated Industry leading Bill Validation Tools (EDI & Paper)
  • Automated loading of periodic (Half hourly) data from any source
  • Manages utilities, transport and waste data to GHG Scopes 1,2&3
  • Reporting of cost, consumption and emissions at all levels
  • Advanced analysis and reporting
  • Ability to create your own reports and dashboards
  • Automated Integration with Accounts Payable and Accounts Receivable systems
  • Data monitoring tools to manage gaps, overdue and unexpected data
  • Tenant Billing

Benefits

  • Save money by maximising cost recovery opportunities from billing errors
  • Save time through extensive system automation
  • Drive down energy costs through better understanding of your usage
  • Meet compliance obligations by reporting through a common utilities database
  • Save time and effort through automated links to Accounts systems
  • Make life easier by working from anywhere
  • Effective collaboration through sharing information across multiple parties
  • Efficient working through guaranteed system availability and SLA's
  • IT Reassurance through automated backups and seamless upgrades
  • Data security assurance through Cyber Essentials Plus and ISO27001

Pricing

£1,995 to £100,000 a licence a year

  • Education pricing available
  • Free trial available

Service documents

Request an accessible format
If you use assistive technology (such as a screen reader) and need versions of these documents in a more accessible format, email the supplier at pmorrell@teamenergy.com. Tell them what format you need. It will help if you say what assistive technology you use.

Framework

G-Cloud 14

Service ID

9 8 2 9 8 4 5 0 2 7 9 5 9 1 1

Contact

TEAM (Energy Auditing Agency Ltd) Pete Morrell
Telephone: 07739575869
Email: pmorrell@teamenergy.com

Service scope

Software add-on or extension
No
Cloud deployment model
Public cloud
Service constraints
Provided you have access to the Internet, and a minimum 2Mbit broadband Internet connection, you will be able to use the service.

Planned maintenance will be advised in advance, giving notice by email and through notices placed on the Customer Help Centre portal.

Emergency maintenance will be advised by email as required, with updates provided via the Customer Help Centre Portal.
System requirements
  • Access to Sigma is via any supported web browser
  • No additional software or firewall permissions are required
  • Access is via a publicly available URL
  • A minimum 2Mbit internet broadband connection

User support

Email or online ticketing support
Email or online ticketing
Support response times
Support Helpdesk operates 8am to 6pm Monday to Fridays (excl Bank Holidays) but can receive user requests 24/7 via the HelpDesk portal or email. All requests received undergo triage, to identify severity (normal , serious or critical), and are acknowledged within 20 minutes. We have stated SLA's for response time and target resolution depending upon severity.

In the event of an unplanned disruption, on detection the event is posted to the HelpDesk, updates are provided every 30 minutes and once know the planned recovery time is added to the post.
User can manage status and priority of support tickets
Yes
Online ticketing support accessibility
WCAG 2.1 AA or EN 301 549
Phone support
Yes
Phone support availability
9 to 5 (UK time), Monday to Friday
Web chat support
No
Onsite support
Yes, at extra cost
Support levels
All customers are assigned an Account Manager who will help you build a successful and optimised energy management service.

Helpdesk: Available between 8am to 6pm Monday to Friday (excluding Public Holidays) manned by specialist staff.

Support Help Centre: A secure online facility, available 24/7, to submit requests, track progress, participate in the discussion community, access the latest TEAM news etc. View and subscribe to Hosted Services platform announcements covering Updates and Upgrades to the platform.

Online Knowledge base: Available 24/7 and includes an AI powered Chatbot that responds in real time to support users in system configuration and operation.

Training: We have a dedicated trainer who can provide training either face to face or via MS Teams.

Software Improvements: TEAM software improvements are provided at no extra charge to ensure customers benefit from regular updates to maintain compatibility with billing and data formats, new features, improved security etc.

Webinars: Webinars are provided on new and updated software. Webinars are available to join live or to download later through the Support Help Centre.

Hosted Support: A fully secure hosted service is provided, supported by specialist IT team. Includes regular backups, DR and IT support.

All costs are included within SaaS fees
Support available to third parties
Yes

Onboarding and offboarding

Getting started
TEAM provide an on-boarding consultancy service aimed at understanding our customers estate and reporting requirements. We then use that to help design the optimum database structure, which may then be built by the customer or by TEAM staff as required. This is all managed by our dedicated Customer Success team, who oversee on-boarding until handover. At that point, our Support Help Desk team provide application support going forward.

Training is available on site from our dedicated software Trainer and also through various on line resources.

E.g. User help is available from within the application, accessing our on line user manual.

We run an on line Training Academy where users can access training courses on the application and upon other energy and utility industry topics. Each course has a test and certificate at the end.
Service documentation
Yes
Documentation formats
  • HTML
  • PDF
  • Other
Other documentation formats
  • Video clips
  • Webinar training sessions
  • MS Word
  • MS Powerpoint
  • MS Excel
End-of-contract data extraction
Upon giving notice of the end of a contract, an off-boarding plan will be put in place. This will include any specific off-boarding obligations agreed as part of the contract and will always include the provision of a complete set of data.

Within 30 days following the termination of the Agreement, and following receipt of any outstanding Charges, TEAM will securely send to the Customer by an agreed method .csv/.xls files of Customer data held on the Sigma Cloud database on the Termination date, and provided in the standard TEAM export format. This is a standard service included with all SaaS contracts.

In addition, at any time during the contract prior to the end date, users can use the data export and reporting facilities within Sigma to pull out their own data sets if required.
End-of-contract process
Upon giving notice of the end of a contract, an off-boarding plan will be put in place.

This will include any specific off-boarding obligations agreed as part of the contract and will always include the provision of a complete set of data.

Within 30 days following the termination of the Agreement, and following receipt of any outstanding Charges, TEAM will securely send to the Customer by an agreed method .csv/.xls files of Customer data held on the Sigma Cloud database on the Termination date. The Customer data will be provided in the standard TEAM export format. TEAM will not be obliged to adhere to bespoke extract formats or the population of additional 3rd party spreadsheets without prior agreement and additional Charges may apply.

Using the service

Web browser interface
Yes
Supported browsers
  • Internet Explorer 11
  • Microsoft Edge
  • Firefox
  • Chrome
  • Safari
Application to install
No
Designed for use on mobile devices
Yes
Differences between the mobile and desktop service
The desktop service via Web Browser provides the full range of functionality but some of the services are available for use on Mobile devices.
Sigma Android and iOS meter reading apps, enable the user to easily capture meter reads, even when offline, synchronising with Sigma when internet connectivity is restored. It can configure walking routes and identify meters using QR codes through the app’s scanner. The Mobile App will also validate meter reads by checking the tolerance from the previous read before submission and show a previous history of reads.
Service interface
No
User support accessibility
WCAG 2.1 AA or EN 301 549
API
Yes
What users can and can't do using the API
Sigma supports full API connectivity. The suite of APIs provide access to the data held within the system, supporting unlimited data integration options and the ability to embed the system within a wider corporate landscape. The APIs can support Create, Read, Update and Delete actions on the data according to the permissions which have been applied.

All API calls require user authentication first by requesting a JWT (JSON Web Token) and requires a valid Sigma username and password. Once the token has been acquired it needs to be passed in the header of subsequent API calls as a “Bearer” Authorization header.

The access rights allowable to the API connection will dictate the objects within the estate structure that can be accessed (the same principle as access permission to the user interface).

A “Sync” API allows meter reading data from Sigma to synchronise with another platform. Sigma keeps track of high frequency data changes and provides the earliest date of change, so another platform can pick this data up and import to the other system to keep aligned.

The system can collect data from API end points. These connections can be setup by Advanced users’ themselves in the system.
API documentation
Yes
API documentation formats
Open API (also known as Swagger)
API sandbox or test environment
Yes
Customisation available
Yes
Description of customisation
The software is available as a core system plus optional extensions.

Core System:
Energy Carbon Management; Monitoring and Targeting (M&T); Data Collection and Management; Virtual Meters; Forecasting and Budgeting; Project Tracking; Near Realtime Energy Analysis; Business Intelligence (BI) Integration; Alarms; Meter Data Exchange; Benchmarking; API Connectivity; Audit and Event Logging; Renewals Generation;

Sigma Extensions:
Utility Bill Validation and Cost Recovery; Automated Bulk Bill Import EDI, CSV, Manual Bill Entry; Network Charge Bill Validation;
Query Management; Bill Charge Line Reporting; Premise Level Billing; Accruals; Sigma Mobile App; Excel Integration; Weather Meter Data; Internet of Things (IoT); Accounts Systems Integration; Tenant Billing Module.

Sigma can be branded, including logo and software banner and provide branded reports

The user can store almost any data stream (utilities, waste, transport, other), building a custom database designed to enable reporting from individual meter to whole estate for cost, consumption and emissions (in line with published Defra/BEIS GHG scope 1,2&3 emissions conversion rates.)

A Sigma Express option provides a simple interface for non-energy professionals

User is able to schedule and distribute reports and dashboards automatically.

Scaling

Independence of resources
Customers are supported by the provisioning of individual databases. Our DBA's allocate resource to customers individual databases to ensure performance.

Load balancing systems are used to distribute user activities across the available IT infrastructure, sharing resources as evenly as possible to reduce risk of high demand in any one area.

Individual databases also ensure separation of customer data for security purposes.

Analytics

Service usage metrics
Yes
Metrics types
Service Availability,
Rolling 12-month annual performance,
and where the service forms part of a wider Bureau service:
Customer Communication Performance Summary.
Database Health Checks,
Potential and Realised Savings,
Active Supply Points,
Bill Processing SLAs,
Report Production SLAs,
KPI Overview,
Outstanding Recovery Queries,
Recovery Query Categories,
Closed Recovery Queries,
Missing Bill Analysis,
Missing Read Analysis,
Reporting types
  • Regular reports
  • Reports on request

Resellers

Supplier type
Reseller providing extra features and support
Organisation whose services are being resold
MRI eSight

Staff security

Staff security clearance
Other security clearance
Government security clearance
Up to Baseline Personnel Security Standard (BPSS)

Asset protection

Knowledge of data storage and processing locations
Yes
Data storage and processing locations
  • United Kingdom
  • European Economic Area (EEA)
User control over data storage and processing locations
No
Datacentre security standards
Managed by a third party
Penetration testing frequency
At least once a year
Penetration testing approach
‘IT Health Check’ performed by a Tigerscheme qualified provider or a CREST-approved service provider
Protecting data at rest
  • Physical access control, complying with another standard
  • Encryption of all physical media
Data sanitisation process
Yes
Data sanitisation type
  • Explicit overwriting of storage before reallocation
  • Deleted data can’t be directly accessed
Equipment disposal approach
Complying with a recognised standard, for example CSA CCM v.30, CAS (Sanitisation) or ISO/IEC 27001

Data importing and exporting

Data export approach
Through the following means:
- Running of reports or analyses and saving to Excel, Word or PDF
- Via REST API including, a Sync API for regular updating of key data
- Fully configurable bulk export tools
- Use of the Excel Integration extension
- Accounts Integration (for creation of custom files containing billing and associated cost code data for automated loading into Accounting Systems)
Data export formats
  • CSV
  • Other
Other data export formats
  • .docx
  • .pdf
  • Text format
  • .xlxs
  • To Print
Data import formats
  • CSV
  • Other
Other data import formats
  • Tradacoms file format 26 version 3
  • Various Supplier electronic billing formats (usually csv format)
  • Internet of Things (IoT) Integration
  • External API end points
  • Modbus TCP/IP
  • Obix enabled system
  • OPC DA/HAD

Data-in-transit protection

Data protection between buyer and supplier networks
TLS (version 1.2 or above)
Data protection within supplier network
IPsec or TLS VPN gateway

Availability and resilience

Guaranteed availability
Availability
During Supported Hours (Mon - Fri 08:00 to 18:00) 99.9%
Last rolling 12 months was at 100%.

TEAM will make commercially reasonable efforts to make the Sigma Services is available 99.9% excluding any expected downtime from Upgrades or OS patch deployment, provided TEAM has used reasonable endeavours to give the customers at least 5 Business Day’s advance notice.

Incident & Problem Management
Categorised into Critical, Serious and Normal priorities, the times against each reflect the following:
Acknowledgement time/Response Time/ Resolution Target time

• Critical – 20mins/1hr/8hrs(one day) (production system is significantly impaired with core functionality essentially unavailable. Users day to day use of software severely impacted, with no available workaround)

• Serious – 20mins/3 hrs/3 days (core processes running but other functionality significantly impaired. Users day to day use of software severely impacted, with no reasonably acceptable workaround)

• Normal – 20mins/6 hrs/10 days (An area of core functionality is generating issues but is not preventing the user from performing day to day use of the software. A workaround may be available.)

There are no service credits unless specifically agreed with the customer.
Approach to resilience
Available on request
Outage reporting
Via email alerts and updates on our Help Desk Portal

Identity and authentication

User authentication needed
Yes
User authentication
  • 2-factor authentication
  • Username or password
Access restrictions in management interfaces and support channels
An individual’s access rights are determined using the ISMS.

The service is operated in accordance with the TEAM Security Information Systems which provides the following risk management controls:

Control A8 – Asset management
Control A9 – Access Control
Access Control Policy ISMS-C_DOC_9.1.1
Access Control Rules & Rights ISMS-C_DOC_9.1.2
Individual User Agreement ISMS-C_DOC_9.2.1A
User Access Management ISMS-C_DOC_9.2.3
User Name Administration ISMS-C_DOC_9.2.3A
Wireless User Addendum ISMS-C_DOC_9.2.3B
Mobile Phone Addendum ISMS-C_DOC_9.2.3C
Secure Logon ISMS-C_DOC_9.4.2
Use of System Utilities ISMS-C_DOC_9.4.4
User Deletion Request ISMS-C_REC_9.2.1
User Replacement Password Requirement ISMS-C_REC_9.4.2
Access restriction testing frequency
At least every 6 months
Management access authentication
  • 2-factor authentication
  • Username or password

Audit information for users

Access to user activity audit information
You control when users can access audit information
How long user audit data is stored for
At least 12 months
Access to supplier activity audit information
Users contact the support team to get audit information
How long supplier audit data is stored for
At least 12 months
How long system logs are stored for
At least 12 months

Standards and certifications

ISO/IEC 27001 certification
Yes
Who accredited the ISO/IEC 27001
LRQA Limited
ISO/IEC 27001 accreditation date
23/07/2022
What the ISO/IEC 27001 doesn’t cover
The whole of TEAM operations are covered by either the Certificate covering TEAM based operations (Issued by LRQA) and another Certificate covering the Microsoft Azure facility
ISO 28000:2007 certification
No
CSA STAR certification
No
PCI certification
No
Cyber essentials
Yes
Cyber essentials plus
Yes
Other security certifications
Yes
Any other security certifications
  • Sigma (Azure) Data Centre is ISO27001 compliant
  • Sigma (Azure) Data Centre is ISO27017 compliant
  • Sigma (Azure) Data Centre is CSA - STAR Registrant
  • Sigma (Azure) Data Centre is PCI compliant
  • Sigma (Azure) DataCentre is member of EU-US Safe Harbor Cloud

Security governance

Named board-level person responsible for service security
Yes
Security governance certified
Yes
Security governance standards
  • ISO/IEC 27001
  • Other
Other security governance standards
Cyber Essentials Plus
Information security policies and processes
TEAM have a documented Information Security Management Manual and System (ISMS) as set out within our Information Security Policy - copies of which can be provided upon demand.

The ISMS Management Engagement Framework drives policies and processes and is steered by the ISMS Committee who meet once a week. This comprises the CEO, Service Delivery Director, Solutions Delivery Director and Senior IT Operations personnel.

The Board of Directors has ultimate authority over the information security policy and ISMS and approves and authorises all changes to the information security policy, the Statement of Applicability, the information security manual and any separate policy statements (tier 1 documents).

The Chief Information Security Officer (CISO) has lead executive authority for information security and works with the Information Security Committee to approve, authorise and issue all tier 2 documents.

The Information Security Manager and all Heads of Department approve and authorise tier 3 documents owned by individuals or entities in their areas of responsibility. Any information security documents personally owned by Heads of Department have to be approved and authorised by the Chief Information Security Officer (CISO).

Owners of information assets are responsible for the day-to-day protection of and operation of related security processes.

Operational security

Configuration and change management standard
Conforms to a recognised standard, for example CSA CCM v3.0 or SSAE-16 / ISAE 3402
Configuration and change management approach
Configuration and change management are managed inline with our ITIL and ISO27001 framework.

In order to ensure the integrity of change to any TEAM supported CI change is managed under a Change Control process defined within our Change Control Procedure ISMS-C_DOC_12.1.2

IT Asset Inventory Management
Third party application AssetExplorer helps to keep up-to-date information of all TEAM assets by periodically scanning the software, hardware & other ownership information.

Configuration Management Database (CMDB)
CMDB lets us track and manage all our CIs in a single repository.

Change sign off authority is based on the Scope and Impact of the change.
Vulnerability management type
Conforms to a recognised standard, for example CSA CCM v3.0 or SSAE-16 / ISAE 3402
Vulnerability management approach
Vulnerability management is delivered inline with Vulnerability Management Process ISMS-C_DOC_12.6.1 and our Technical Vulnerability Management Policy

Regular vulnerability scans are carried out on corporate IT and Cloud Infrastructure / Systems. Vulnerabilities found are assessed individually based upon risk, and appropriate action taken - this could range from hours to months.

Monthly management reports summarise current vulnerabilities, additional controls in place and any outstanding issues.

TEAM is registered to receive product vendor patches and updates for purchased software, as a contingency the following resources can be used to identify and track vendor patches and updates:

https://cve.mitre.org/data/downloads/index.html
https://www.securityfocus.com/archive/1
https://www.us-cert.gov/
Protective monitoring type
Conforms to a recognised standard, for example CSA CCM v3.0 or SSAE-16 / ISAE 3402
Protective monitoring approach
Our hosted service provider Microsoft provides an array of Intrusion Protection Systems (IPS) and Intrusion Detection and Prevention Systems (IDPS) for both network and server/host level.

The Microsoft Azure platform provides intrusion detection with a perimeter-level DataPower-based firewall. Logs are consolidated within a Microsoft security information and event management (SIEM) tool.

Scanning, including OWASP-based vulnerability scans are performed by Microsoft against the platform endpoints. Real-time analysis at HTTP level for OWASP issues such as SQL Injection or cross-site scripting (XSS) attacks are not provided at this time.

A dedicated team monitor systems 24/7, using automated tools to detect malicious activity.
Incident management type
Conforms to a recognised standard, for example, CSA CCM v3.0 or ISO/IEC 27035:2011 or SSAE-16 / ISAE 3402
Incident management approach
Incident are managed as set out in our Information Security Management System - Control A16 – Information Security Incident Management

Specific Work Instructions have been documented for the most common information security incidents.

Users report incidents through raising tickets within Service Desk Plus, the IT Operations Help Desk system.

The Information Security Manager prepares a monthly report to the Information Security Committee which identifies (from the Event Reporting Log ISMS-C REC 16.1.2-3a) the number, type, category and severity of information security incidents during the preceding month along with the cost of containment and recovery, with recommendations for additional controls.

Secure development

Approach to secure software development best practice
Independent review of processes (for example CESG CPA Build Standard, ISO/IEC 27034, ISO/IEC 27001 or CSA CCM v3.0)

Public sector networks

Connection to public sector networks
No

Social Value

Social Value

Social Value

  • Fighting climate change
  • Equal opportunity
  • Wellbeing

Fighting climate change

As an Employee Owned business and specialists in energy consultancy, energy management software and energy bureau services, the mainstay of TEAM’s business is supporting organisations to reduce costs, improve sustainability and achieve their net zero ambitions. TEAM operates and maintains an ISO14001 accredited Environmental Management System (EMS). The EMS is fully integrated with our ISO9001-accredited Quality Management System, which ensures we have robust procedures and processes in place to manage our internal environmental targets and monitor our performance against them on an ongoing basis. We have developed a Carbon Reduction Strategy for our own business which exceeds the Governments PPN 06/21 criteria. We diligently monitor environmental legislation, regulations and codes of practice that are relevant to our operations to ensure full and continued compliance. We are committed to a reach Net Zero Carbon emissions in line with the UK Government 2030 target. This will be achieved by employing best practice in energy and carbon management, developing and delivering against our Carbon Reduction Strategy, reducing our energy consumption and improving our energy efficiency wherever possible. We have installed Solar panels to supply our office building, LED lighting, a Ground Source Heat Pump, EV charging points, and operate a share lift programme. Sigma is hosted in the MS Azure cloud – one of the most environmental cloud platforms available. TEAM incentivises all employees to travel sustainably via our cycle-to-work schemes and has introduced a salary sacrifice EV purchase scheme. Whenever possible, TEAM utilises video conferencing rather than in-person meetings in order to limit our carbon footprint. Where travel is unavoidable, we endeavour to use public transport where possible. These initiatives aim to minimise the number of car miles spent commuting and reduce our collective CO2 emissions.

Equal opportunity

TEAM is committed to promoting equal opportunities and, throughout the contract term, we will comply with the statutory prohibitions on discrimination to avoid unlawful discriminatory practices, in accordance with the Equality Act 2010. Training for Managers and Supervisors includes Equality, Diversity and Inclusion (EDI) modules. This ensures recruitment, selection and promotion procedures do not discriminate against any group, directly or indirectly. Our robust Equality Policy and company values are visible at all times via our employee handbook and company intranet. We support in-work progression so that all TEAM employees are appropriately skilled and qualified to enable a first-class customer service. We invest approximately 1,100 staff hours per year to deliver comprehensive training (upon induction and on a refresher basis) across the business. We also have an appraisal process which is designed to support the development of our employees and is supported by in-house and external training programs. All training delivered is recorded in our Training Log, which is maintained by our HR team. TEAM commits to the following SMART targets: 1. Record and benchmark diversity data. To monitor any patterns of under-representation, we measure our workforce diversity data in our HR portal. We will use the portal to track the % of females in positions of leadership, the % of employees from different ethnic minority backgrounds and % disabled employees that make up our teams, compiling internal diversity reports annually. We will utilise Government and other databases to enable us to measure our success versus other companies in our industry. 2. Mechanisms are in place to ensure positive recruitment. If our benchmarking activities suggest we are short falling against the industry averages this will be thoroughly investigated, and a plan will be put in place to promote equality, diversity and inclusion and remove any barriers.

Wellbeing

TEAM proactively encourages and supports good mental and physical health for our workforce. We are committed to safeguarding staff wellbeing, addressing problems before they become severe, and supporting staff when issues do emerge. This starts with truly understanding employees’ health and wellbeing needs. Our HR Manager holds a Level 2 Certificate in Understanding Mental Health First Aid and Mental Health Advocacy in the Workplace. This ensures our HR team is equipped to identify and support employees with a variety of health and wellbeing needs directly (i.e. Remote home working issues, stress management, personal issues affecting performance at work such as bereavement, diagnosed mental health and physical conditions). We have an Employee Assistance Programme with a 3rd party provider which provides 24/7/365 telephone support for all matters pertaining to wellbeing (Debt, grief, depression, abuse etc). This can be accessed directly by employees confidentially or by Manager referral for a call back if they have concerns. The 3rd party counsellors are able to refer employees for up to 8 face to face counselling sessions. Our company intranet has dedicated pages for health and wellbeing, including signposts to specialist support organisations and providing self help features on various topics. Employee health and wellbeing are an agenda item in TEAM’s weekly management meetings, which ensures that best practice filters down throughout the business. In order to maintain oversight of the mental/physical health of our workforce, we conduct regular Health & Wellbeing Surveys. E.g. our Directors recently initiated a company-wide survey, aimed at addressing the specific challenges of working from home, to identify areas in which TEAM could better support its employees’. Survey results are consolidated by our HR department and key findings presented to Directors. Following the survey, we identify opportunities in which we could improve employee’s working environments and experiences.

Pricing

Price
£1,995 to £100,000 a licence a year
Discount for educational organisations
Yes
Free trial available
Yes
Description of free trial
We can provide free trials upon agreement of the following:
- Duration of trial (usually 2 weeks)
- Trial Objectives
- What a successful trial looks like
- What happens after a successful trial.

Initial guidance on navigation around the system (not full training).
Based upon using TEAM demo system.

Service documents

Request an accessible format
If you use assistive technology (such as a screen reader) and need versions of these documents in a more accessible format, email the supplier at pmorrell@teamenergy.com. Tell them what format you need. It will help if you say what assistive technology you use.