• The Modo Energy Terminal

    One platform to understand, value and benchmark energy asset globally.

  • Modo Energy Media

    Global news and insights on power markets, BESS, renewables and data centres.

Log inSign up
ENERGY STORAGESOLARCO-LOCATIONCOMMERCIAL & INDUSTRIALDATA CENTRESWIND
16 September 2021

EFA: how does the EFA day work?

Written by:
Neil Weaver

EFA: how does the EFA day work?

More and more ancillary services are moving to EFA block procurement. But what does that actually mean? Now seems as good a time as any for a quick recap of exactly how the EFA day works.

Get full access to Modo Energy Research

Already a subscriber?

Log in

Related articles
NEM Reform: A conversation with Tim Nelson
Market & Policy Updates

2 hours ago

Australia’s energy system is in transition - and so are its markets. At the end of 2024, a review of the NEM and its wholesale market settings was kicked off by a four-person panel led by Tim Nelson. The first recommendations of the now commonly known ...
Capacity Swap x Virtual Toll: A case study of offtake stacking in the NEM
Market Analysis

3 hours ago

​As developers push to de-risk projects and investors hunt for predictable returns, the BESS offtake market in the NEM is evolving fast. Ampyr’s recently announced offtake stacking for its Bulabul battery - pairing a Zen Energy virtual toll with a capa...
ME BESS ERCOT: Revenues to settle at $2.38/kW in November 2025
Benchmark Report

5 days ago

Revenues for battery energy storage in ERCOT are expected to settle at $2.38/kW in November 2025, a 13% year-over-year decrease.
ME BESS GB: Revenues fall to £59k/MW/year in November 2025
Benchmark Report

5 days ago

Battery energy storage revenues in Great Britain fell to £57k/MW/year in November, down from £77k/MW/year in October.
Modo Energy Logo
B certified logo
Better business act logo
One percent for the planet logo

Resources

  • All research
  • The Energy Academy
  • Transmission: The Podcast
  • Weekly Dispatch: Newsletter
  • Live Events
  • Careers
  • RSS

Legal

  • Website Terms of Service
  • Privacy Policy
  • Conflict of Interest Policy
  • Benchmark Complaints
  • Open Source Notice

Support

  • Help Centre
  • Schedule a call
  • Live chat
  • Status Page
  • Suggestions

Copyright© 2025 Modo Energy. All rights reserved