{"podcast":{"title":"Transmission","slug":"transmission-7044890","podcast_index_feed_id":7044890,"rss_url":"https://www.spreaker.com/show/5990186/episodes/feed","website_url":"https://www.spreaker.com/show/transmission_6","image_url":"https://d3wo5wojvuv7l.cloudfront.net/t_rss_itunes_square_1400/images.spreaker.com/original/4fc410ca8262a6d248f7912677886433.jpg","author":"Ysabelle Swan","episode_count":429,"summary":"Transmission brings you insights from thought leaders, energy experts and cleantech specialists from across the industry.","last_synced_at":"2026-06-09T16:17:35.094901+00:00","page_url":"https://stenobird.com/podcast/transmission-7044890"},"episode":{"title":"Why “Perfect” Battery Models Keep Failing in Reality - Harmony Energy","slug":"why-perfect-battery-models-keep-failing-in-reality-harmony-energy","published_at":"2026-04-02T06:00:35+00:00","page_url":"https://stenobird.com/podcast/transmission-7044890/why-perfect-battery-models-keep-failing-in-reality-harmony-energy","show_page_url":"https://stenobird.com/podcast/transmission-7044890","url":"https://www.spreaker.com/episode/why-perfect-battery-models-keep-failing-in-reality-harmony-energy--71056606","audio_url":"https://api.spreaker.com/download/episode/71056606/f96ff89d1f850f5ea341cbbc1cb00cb0b01f262d.mp3","summary":"Most BESS revenue forecasts aren't wrong, they're just being used for the wrong thing. The gap between a valuation-grade forecast and what a project actually earns in a live market is where BESS developers win or lose. The developers who survive that gap are the ones who design for uncertainty from the start - not after the fact.Recorded live at the Investing in Battery Energy Storage conference, Paul Mason, Chief Investment Officer of Harmony Energy, joins Ed Porter for a return appearance on Transmission.They cover:- Why treating a revenue forecast as a fixed cash flow is the most common mistake in BESS development.- How the listed fund model enabled GB BESS to scale.- Why splitting BESS revenues into ancillary, wholesale, and balancing mechanism streams is now a misleading framework.- How Harmony selects new markets in France and Germany: renewable penetration, grid-first site selection, and why any business case dependent on high ancillary revenues is a losing strategy.- What good optimizer relationships actually look like.Got follow-up questions? Ask Ko, Modo Energy's AI analyst : https://modoenergy.com/sign-up?utm_source=podcast_apps&utm_medium=podcast&utm_id=paul_mason Watch on YouTube: https://youtu.be/a2--s956k-c ⏱ CHAPTERS────────────────────────────────────────────────────────────0:00 Introduction1:16 What do BESS developers get wrong when building an IPP?3:25 Why full EPC contracts — and why they still hired project managers5:28 Duration strategy: the case for 2-hour batteries early7:00 The full BESS lifecycle — develop, build, operate, sell8:25 How Harmony raised capital through listed funds (and why it worked then)10:45 Why listed fund capital flowed out and what came next13:20 The Foresight asset sale: private vs. public valuation15:08 New market…","meta_description":"Most BESS revenue forecasts aren't wrong, they're just being used for the wrong thing. The gap between a valuation-grade forecast and what a project actua…","key_points":[],"chapters":[],"topics":[],"duration_seconds":1987,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/transmission-7044890/episodes/why-perfect-battery-models-keep-failing-in-reality-harmony-energy/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/transmission-7044890/why-perfect-battery-models-keep-failing-in-reality-harmony-energy.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}