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London film retrospective pays tribute to Anna May Wong socialistchina.org/2025/09/15/…

London film retrospective pays tribute to Anna May Wong - Friends of Socialist China

In the following article, which originally appeared in the Morning Star, David Horsley reviews a season of Anna May Wong’s films, currently showing at the British Film Institute (BFI) on London’s Southbank until October 8, and pays a well-deserved tr…
Friends of Socialist China

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Siliconera just posted:

Honkai: Nexus Anima Beta Test Access Emails Head Out

Back at the end of August 2025, HoYoVerse announced the Honkai: Nexus Anima Nexus Bond Test and confirmed people could register for access to this closed beta. It ended registration on September 12, 2025. Now it confirmed on social media that emails alerting people who will get to take part went out. It also shared an introduction to the Honkai: Nexus Anima character ...

siliconera.com/honkai-nexus-an…

#gamingNews

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Honkai: Nexus Anima Beta Test Access Emails Head Out - Siliconera

The Honkai: Nexus Anima Bond Test participation emails went out, the schedule for the closed beta is set, and we got to see Scorscythe.
Jenni Lada (Siliconera)

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サンドイッチマン / TICK@TOCK★TWINS / September 16, 2025 3:14 AM
「背カンバン（バックボード）」は文字通り「背中の看板」と訳され、あなたの説明に最も近いでしょう。あまり一般的ではありませんが、創作文や話し言葉では自然に使われます。

「人間カンバン（人間カンバン）」は、人が身に着けたり持ち歩いたりする看板のことで、街頭広告やイベントのプロモーションでよく使われます。この用語は広告やストリートマーケティングでより一般的に使われます。

「サンドイッチマン（サンドイッチマン）」は、英語の「sandwich man」に由来する、昭和風の古典的な用語で、前面と背面に2つの看板を掲げている人物を指します。このスタイルは昭和の街頭広告で非常に人気があり、今ではノスタルジックな意味やユーモラスな意味を持つことがよくあります。
#AIgenerated #初音ミク #VOCALOID #HatsuneMiku #miku #バニーガール #サンドイッチマン #昭和
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#初音ミク サンドイッチマン - TICK@TOCK★TWINSのイラスト - pixiv

「背カンバン（バックボード）」は文字通り「背中の看板」と訳され、あなたの説明に最も近いでしょう。あまり一般的ではありませんが、創作文や話し言葉では自然に使われます。「人間カンバン（人間カンバン）」は、
pixiv

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Helius Medical Raises $500M Backed by Pantera Capital to Launch a $1.25B Solana Treasury - Helius Medical Technologies announced Monday that it secured $500 million through ... - cryptonews.com/news/helius-med… #altcoinnews #treasury #solana #news

Helius Medical Raises $500M Backed by Pantera Capital to Launch a $1.25B Solana Treasury

Helius Medical secured $500 million in funding through a PIPE offering led by Pantera Capital to launch a Solana treasury strategy.
Anas Hassan (Cryptonews)

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Solana Price Prediction: TVL Hits $13 Billion All-Time High – $500 Within 4 Weeks - Solana’s price outlook is turning increasingly bullish, as the network’s DeFi ecos... - cryptonews.com/news/solana-pri… #priceprediciton #priceanalysis #solana

Solana Price Prediction: TVL Hits $13 Billion All-Time High – $500 Within 4 Weeks

Solana DeFi just hit $13B TVL – Solana price prediction now teases a $500 breakout within weeks. Here's the latest.
Anas Hassan (Cryptonews)

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Robinhood seeks SEC approval for venture fund accessible to retail investors - The brokerage is seeking SEC approval for Robinhood... - cointelegraph.com/news/robinho…

Robinhood seeks SEC approval for venture fund accessible to retail investors

Robinhood has filed with the SEC to launch Robinhood Ventures Fund I, a closed-end fund that would give retail investors access to private companies.
Sam Bourgi (Cointelegraph)

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Kotaku just posted:

Tony Hawk Recreated THUG’s Classic Intro And Got Fans More Excited For A Remake

However, don't get too excited, as Tony Hawk labeled the video to be clear it's not a teaser
The post Tony Hawk Recreated THUG’s Classic Intro And Got Fans More Excited For A Remake appeared first on Kotaku.

kotaku.com/tony-hawk-thug-unde…

#gamingNews

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Tony Hawk Recreated THUG's Classic Intro And Fans Are Excited

Zack Zwiezen (Kotaku)

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Epstein is Taking Western Civilization Down with Him libya360.wordpress.com/2025/09…

Epstein is Taking Western Civilization Down with Him

BettBeat Media The Face That Appears When the West Looks in the Mirror The reckoning has begun. Not the one we were told to expect—foreign terrorists and external threats—but the one we should have…
INTERNATIONALIST 360°

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Gamespot just posted:

Overwatch 2 Persona 5 Crossover Skins Are Ready To Steal Your Heart (And Wallet)

The arrival of Persona 5's Phantom Thieves in Overwatch 2 on September 16 will mean more than just hearts are about to be stolen, as the game is set to introduce a number of new premium cosmetics based on Atlus' stylish JRPG that likely won't come cheap.After having previously teased the collab, Blizzard has finally revealed the five main ...

gamespot.com/articles/overwatc…

#gamingNews

Header image for an article titled: Overwatch 2 Persona 5 Crossover Skins Are Ready To Steal Your Heart (And Wallet)

Overwatch 2 Persona 5 Crossover Skins Are Ready To Steal Your Heart (And Wallet)

Mercy, Wuyang, Lifeweaver, D.Va, and Genji are receiving collab skins.
Cameron Koch (GameSpot)

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RPG Site just posted:

Draco and the Seven Scales is a love letter to Link's Awakening with parrots and pirate ships

Draco and the Seven Scales feels like it's been pulled straight off the Gameboy, and should be on every 2D Zelda fan's radar!

rpgsite.net/preview/18335-drac…

#gamingNews

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Draco and the Seven Scales is a love letter to Link's Awakening with parrots and pirate ships

Scott White (RPG Site)

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Ethereum Foundation forms AI research team to blend blockchain, AI - The new team will be led by Ethereum Foundation res... - cointelegraph.com/news/ethereu…

Ethereum Foundation forms AI research team to blend blockchain, AI

The Ethereum Foundation is starting a new team focused on artificial intelligence, as the blockchain's role as a settlement layer grows.
Christopher Tepedino (Cointelegraph)

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Venezuela’s Interior Minister: Whoever Attacks Us Should Be Ready for 100 Years of War orinocotribune.com/venezuelas-…

Venezuela's Interior Minister: Whoever Attacks Us Should Be Ready for 100 Years of War

The minister for the Interior, Citizen Security and Peace of Venezuela, Captain Diosdado Cabello, stated that whoever invades Venezuela should be prepared for a hundred years of war.
Orinoco Tribune - News and opinion pieces about Venezuela and beyond

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Bitcoin Flat as Treasury Companies Stall - Research from London-based Standard Chartered Bank shows that modified net asset v... - news.bitcoin.com/bitcoin-flat-… #marketsandprices #bitcoin(btc) #prices

Bitcoin Flat as Treasury Companies Stall – Markets and Prices Bitcoin News

Research from London-based Standard Chartered Bank shows that modified net asset values for bitcoin treasury companies are trending downward.
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Destructoid just posted:

How to get all Twitch Drops rewards in FC 26 (First gameplay reveal)

The first Twitch Drops campaign has been announced for FC 26, and you can get some fantastic rewards to kickstart your Ultimate Team journey. The recently announced drops are the first campaign for the new game. It will be available on Sept. 16, and the total rewards include packs and more. This guide will ensure you start as strongly as possible by ...

destructoid.com/how-to-get-all…

#gamingNews

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How to get all Twitch Drops rewards in FC 26 – Destructoid

Rewards even before we get to play.
Arka Sarkar (Destructoid)

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Leader Tells Solution to Palestine: Zionists Must Evacuate, Referendum Must Be Held iranpress.com/content/310079

Leader Tells Solution to Palestine: Zionists Must Evacuate, Referendum Must Be Held

Leader of Islamic Revolution Ayatollah Khamenei has time and again reiterated that people of Palestine must take part in a referendum to determine their fate and that the Israelis from different parts the world who occupied the Palestinian land must …
iranpress.com

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Altcoin Season Snapshot: Avantis’ $1B Turnover, Pump.fun Momentum, Mantle Futures Bid - Altcoin season continues to develop through selective moves tied to exchange acces... - cryptonews.com/news/altcoin-se… #altcoinseason #altcoinnews #altcoin #news

Altcoin Season Snapshot: Avantis’ $1B Turnover, Pump.fun Momentum, Mantle Futures Bid

Altcoin season lifts Avantis on $1B exchange volume, Pump.fun through steady platform demand, and Mantle with ongoing derivatives support.
Hongji Feng (Cryptonews)

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Ethereum Stakes a Claim as AI’s Settlement Layer With dAI Team - Ethereum core developer Davide Crapis unveiled the Ethereum Foundation’s new “dAI ... - news.bitcoin.com/ethereum-stak… #artificialintelligence(ai) #ethereum(eth) #cryptonews

Ethereum Stakes a Claim as AI’s Settlement Layer With dAI Team – Crypto News Bitcoin News

Ethereum developer Davide Crapis unveiled the Ethereum Foundation’s new “dAI Team” on Monday, Sept. 15, 2025.
Jamie Redman (Bitcoin News)

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Chainlink, Pi Coin & Remittix Take The Title For The Best Crypto To Buy In September - The crypto market saw a flurry of activity during September, with investors looking at pr... - blockonomi.com/chainlink-pi-co… #pr

Chainlink, Pi Coin & Remittix Take The Title For The Best Crypto To Buy In September

The crypto market saw a flurry of activity during September, with investors looking at projects that enjoy sound fundamentals supported by real-world uses.
Oliver Dale (Blockonomi)

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Bitcoin Price Prediction: Analysts See $220K BTC as 3 Best Crypto Presales Gain Investor Attention - The outlook for Bitcoin (BTC) has turned increasingly bullish, with multiple analysts for... - blockonomi.com/bitcoin-price-p… #pr

Bitcoin Price Prediction: Analysts See $220K BTC as 3 Best Crypto Presales Gain Investor Attention

Bitcoin price prediction: Analysts target $220K BTC by late 2025 as gold links, ETFs, and whales drive momentum. Presales and altcoins gain traction
Michelle DG (Blockonomi)

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Destructoid just posted:

All challenges and rewards in BO6 Operation Hell Ride event

A new Call of Duty Zombies adventure is almost here, and Treyarch is celebrating it with a new event in Black Ops 6. Operation: Hell Ride appears to coincide with new information about Black Ops 7's new Zombies experience releasing the same week. Within the new event, players can unlock items for free by simply playing and finishing unique challenges. The ...

destructoid.com/bo6-operation-…

#gamingNews

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All challenges and rewards in BO6 Operation Hell Ride event – Destructoid

Highway to hell.
Scott Duwe (Destructoid)

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Four Crypto Assets You Should Be Holding In September: Dogecoin, Solana, Chainlink & Remittix - September is shaping up as a defining month for Dogecoin, Solana, Chainlink and especiall... - cryptodaily.co.uk/2025/09/four… #morenews

Four Crypto Assets You Should Be Holding In September: Dogecoin, Solana, Chainlink & Remittix

September is shaping up as a defining month for Dogecoin, Solana, Chainlink and especially Remittix. Dogecoin is drawing strong institutional interest ahead of its first U.S.
Crypto Daily

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Litecoin News Today; Cardano Price Prediction & Remittix Presales Eclipses Over $25.6 Million Raised After Breaking Records - Cardano price and Litecoin market actions have caught the eye. But, Remittix experts expe... - cryptodaily.co.uk/2025/09/lite… #morenews

Litecoin News Today; Cardano Price Prediction & Remittix Presales Eclipses Over $25.6 Million Raised After Breaking Records

Cardano price and Litecoin market actions have caught the eye. But, Remittix experts expect to flip the entry positions of investors to enjoy multiple-fold gains in 2025.
Crypto Daily

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初音ミク アジテーション / Yoshta / September 16, 2025 2:05 AM
Agitation MikuPJDredraw Challenge just to feel something.
#MikuPJDredraw #VOCALOID #初音ミク #HatsuneMiku #ProjectDIVA #fanart #wowaka #アンハッピーリフレイン #UnhappyRefrain
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#MikuPJDredraw 初音ミク アジテーション - Yoshtaのイラスト - pixiv

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Destructoid just posted:

Town to City early access review – An enthralling entry into the city builder genre

Town to City is the latest city builder now in early access, and it’s a must-play for fans of the genre. This new, beautifully blocky game lets your creativity run amok against an absolutely stunning landscape, and with a wide array of customization options, it sets itself apart from other entries in the genre. Since Town to City is still ...

destructoid.com/reviews/town-t…

#gamingNews

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Town to City early access review - An enthralling entry into the city builder genre – Destructoid

If you like your customization options, this one is for you.
Destructoid

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Pepe Price Prediction: Why Remittix Is Being Called The Next PEPE After 100x Gains Predictions - Pepe price prediction models have been grabbing headlines lately as technicals and commun... - cryptodaily.co.uk/2025/09/pepe… #morenews

Pepe Price Prediction: Why Remittix Is Being Called The Next PEPE After 100x Gains Predictions

But as many crypto speculators re-assess what makes a token sustainable, a rising newcomer, Remittix, is drawing comparisons to the meme-champion PEPE for its upside potential and real-world utility.
Crypto Daily

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Solana Price Prediction; Cardano News & Everything You Need To Know About The Viral Remittix Presale - The Solana Price is back above key levels as traders look for the next push. Cardano is a... - cryptodaily.co.uk/2025/09/sola… #morenews

Solana Price Prediction; Cardano News & Everything You Need To Know About The Viral Remittix Presale

The Solana Price is back above key levels as traders look for the next push. Cardano is also in focus with fresh targets and upgrades. At the same time, the Remittix presale keeps trending with daily rewards and real payment goals.
Crypto Daily

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Israeli aggression claims lives of dozens of Yemeni journalists amid media office attacks tehrantimes.com/news/517901/Is…

Israeli aggression claims lives of dozens of Yemeni journalists amid media office attacks

The Israeli airstrikes on September 10, 2025, devastated media headquarters and civilian areas in Yemen’s capital Sanaa and al-Jawf province, killing 31 journalists and injuring dozens more, according to Yemen’s health ministry and media unions. 
Tehran Times

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France Threatens to Block EU-Licensed Crypto Firms, AMF Pushes for Centralized Oversight: Report - France has issued its strongest warning yet on the future of crypto regulation in Europe,... - cryptonews.com/news/france-thr… #cryptoregulationnews #cryptoregulations #france #news #eu

France Threatens to Block EU-Licensed Crypto Firms, AMF Pushes for Centralized Oversight: Report

France has weighed passport limits for crypto as some firms have faced scrutiny, backing ESMA oversight amid uneven MiCA licensing.
Tanzeel Akhtar (Cryptonews)

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Shiba Inu Set For Mega Growth But Not Until 2028 As Investors Favour Trending Altcoins Such As Remittix In September - The price of Shiba Inu is still among the most tracked in the meme coin world, with holde... - cryptodaily.co.uk/2025/09/shib… #morenews

Shiba Inu Set For Mega Growth But Not Until 2028 As Investors Favour Trending Altcoins Such As Remittix In September

The price of Shiba Inu is still among the most tracked in the meme coin world, with holders highly speculating its long-term expansion.
Crypto Daily

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Dogecoin News Today: Remittix Wallet Launches With Amazing Community Response & 15% USDT Rewards - Today's Dogecoin News hype isn't just meme tokens but also utility projects that are chan... - cryptodaily.co.uk/2025/09/doge… #morenews

Dogecoin News Today: Remittix Wallet Launches With Amazing Community Response & 15% USDT Rewards

Today's Dogecoin News hype isn't just meme tokens but also utility projects that are changing the narrative in digital assets.
Crypto Daily

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Solana Price Prediction: Analyst eyes $1,250 as Galaxy Digital and Forward Industries Intensify Accumulation - Solana price has recently attracted renewed attention as buying activity intensifies in t... - coingape.com/markets/solana-pr… #priceanalysis #solana

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Solana price edges toward a $250 breakout as Galaxy Digital adds $306M and Forward Industries launches a $1.58B SOL treasury.
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XLM Sees Heavy Volatility as Institutional Selling Weighs on Price - Stellar’s XLM token endured sharp swings over the past 24 hours, tumbling 3% as in... - coindesk.com/markets/2025/09/1… #aimarketinsights #markets

XLM Sees Heavy Volatility as Institutional Selling Weighs on Price

Stellar’s XLM token slid 3% amid institutional selling, but intraday volatility showed signs of short-lived recovery.
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XRP Price Watch: Bullish Divergence Builds Amid Tight $2.96–$3.07 Range - XRP traded at $3.02 on Sept. 15, 2025, with a market capitalization of $180 billio... - news.bitcoin.com/xrp-price-wat… #marketsandprices #ripplexrp

XRP Price Watch: Bullish Divergence Builds Amid Tight $2.96–$3.07 Range – Markets and Prices Bitcoin News

XRP traded for $3.02 on September 15, 2025. Discover the factors behind its market behavior and trading volume insights.
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█ Girona penja un retrat de Felip VI fet amb fotos de l'1-O: "Acatem passant a l'atac" ▓▒░ L'alcalde Lluc Salellas diu que compleixen amb el que va "imposar" la sentència deixant clara la crítica a la monarquia
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#324cat #monarquia #felipvi #girona #girones

La imatge és un mosaic de fotografies del dia en què es va celebrar el referèndum (3Cat)
El retrat és un mosaic de fotografies de l'1 d'Octubre que han cedit diversos fotògrafs de Girona (3Cat)

Girona penja un retrat de Felip VI fet amb fotos de l'1-O: "Acatem passant a l'atac"

L'alcalde Lluc Salellas diu que compleixen amb el que va "imposar" la sentència deixant clara la crítica a la monarquia
Redacció (324)

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Resheq calls on Doha summit to deter and isolate the “rogue entity” #Palestine english.palinfo.com/news/2025/…

Resheq calls on Doha summit to deter and isolate the "rogue entity"

Ezzet al-Resheq, member of Hamas’s political bureau, has called on the Arab-Islamic summit, which is to be held in Qatar on Monday, to serve as a launchpad for deterring Israel and “isolate this rogue entity, which is ruled by a gang of fascist crimi…
The Palestinian Information Center

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Browse millions of anime, manga, videos, hentai, and video game themed images on Gelbooru. Discover art with detailed tags. Contains explicit hentai content.
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Kotaku just posted:

Thank God, Overwatch 2’s Persona 5 Collab Doesn’t Have Another Kiriko Skin

The Phantom Thieves are joining in the Fortnite-ification of Blizzard’s hero shooter
The post Thank God, <em>Overwatch 2</em>’s <em>Persona 5</em> Collab Doesn’t Have Another Kiriko Skin appeared first on Kotaku.

kotaku.com/overwatch-2-persona…

#gamingNews

Header image for an article titled: Thank God, Overwatch 2’s Persona 5 Collab Doesn’t Have Another Kiriko Skin

Overwatch 2 Reveals Persona 5 Skins For Mercy, Genji, More

Kenneth Shepard (Kotaku)

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Bonk Crypto Next Target Revealed: Buy Now or Wait - Bonk is a meme coin on Solana that’s showing renewed interest and momentum. With ... - coincodecap.com/bonk-crypto-ne…

Bonk Crypto Next Target Revealed: Buy Now or Wait - CoinCodeCap

Bonk is a meme coin on Solana that’s showing renewed interest and momentum. With its large supply and community backing, it remains one of the popular choices
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How big a solar battery do I need to store all my home's electricity?

Link: shkspr.mobi/blog/2025/09/how-b…
Discussion: news.ycombinator.com/item?id=4…

How big a solar battery do I need to store all my home's electricity? | Hacker News

news.ycombinator.com

Terence Eden’s Blog

2025-09-15 11:34:42

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How big a solar battery do I need to store *all* my home's electricity?


shkspr.mobi/blog/2025/09/how-b…

I have a modest set of solar panels on an entirely ordinary house in suburban London.

On average they generate about 3,800kWh per year. We also use about 3,800kWh of electricity each year. Obviously, we can't use all the power produced over summer and we need to buy power in winter. So here's my question:

How big a battery would we need in order to be completely self-sufficient?

Background


Let's take a look at a typical summer's day. The graph is a little complex, so I'll explain it.

Graph of power flow.

The yellow line shows solar production. It starts shortly after sunrise, peaks at midday, and gradually drops until sunset.

The red line shows how much electricity our home is using. As you can see, there's a large peak about 19:00 when we cook dinner.

The blue line shows how much electricity we draw or export from the grid. From midnight until sunrise we import because the sun isn't shining. Once the sun has risen we're able to power our house and export to our neighbours. When we cook, we draw from the grid and our battery - which is why the evening grid peak is lower than the household use dip.

The CSV of the data looks something like this:

Local_timeHousehold_(W)Solar_(W)
2025-08-25T08:25:00.000+01:00-187.761166.77
2025-08-25T08:30:00.000+01:00-227.041193.25
2025-08-25T08:35:00.000+01:00-253.061222.84
2025-08-25T08:40:00.000+01:00-266.871245.18
2025-08-25T08:45:00.000+01:00-450.81268.66
2025-08-25T08:50:00.000+01:00-251.841281.79
2025-08-25T08:55:00.000+01:00-1426.261306.93
2025-08-25T09:00:00.000+01:00-206.781341.37
2025-08-25T09:05:00.000+01:00-215.521390.9
2025-08-25T09:10:00.000+01:00-242.61426.19
2025-08-25T09:15:00.000+01:00-246.841473

It's fairly trivial to sum both columns and subtract one from the other. That shows either the excess or deficit in solar power for the household.

On that day, the house used 9.7kWh and generated 19.6kWh. I'd need a 9.9kWh battery to store the excess right? Wrong!

Because my usage doesn't track the sun, I'd actually need a 13kWh battery. That's the peak amount of excess electricity I've generated in that one day.

What I want to do is find out what the maximum size battery I would need in order to store all of summer's electricity for use in winter.

Luckily, I have several years of real data to go off! Let's get started!

Disclaimer


This is based on data generated by my home battery. It has probes to measure solar output and grid flow. It is not 100% clock-accurate compared to my solar-panels' internal reporting nor what my smart-meter reports. I estimate a 1-2% deviation, which is good enough for these purposes.

My energy usage isn't representative of anything other than my usage. Your household is probably different. I already have a 4.8kWh battery which changes how and when I use energy.

This doesn't account for gas heating or hot water. We have some electric heaters and taps which increases our electricity usage.

My maths is probably right - but the code is open source, so feel free to check for yourself.

Remember, this is just a bit of fun. There's no practical way to build domestic batteries with this capacity using the technology of 2025.

Code


We tend to start generating more electricity than we use starting in Spring. So I've picked the end of March 2024 to the end of March 2025.

Let's see how big a battery we'd need to store our summer excess for winter. This finds the cumulative difference between each day's energy production and usage:
Python 3import osimport pandas as pd# Load all the CSVsfilepaths = [f for f in os.listdir(".") if f.endswith('.csv')]df = pd.concat(map(pd.read_csv, filepaths))# Make sure they're in orderdf = df.sort_values("Timestamp")df = df.reset_index(drop=True)# Resolution is every 5 minutes, so divide by 12 to get hourlydf["Cumulative_Difference"] = ( (df["Household_(W)"] + df["Solar_(W)"] ).cumsum() ) / 12# kWh of battery neededint(df["Cumulative_Difference"].max() / 1000)## Draw a pretty graphdf.plot(kind="line", x="Local_time", y="Cumulative_Difference", xlabel="Date", ylabel="MWh", xticks=["2024-04-01", "2024-05-01", "2024-05-01", "2024-06-01", "2024-07-01", "2024-08-01", "2024-09-01", "2024-10-01", "2024-11-01", "2024-12-01", "2025-01-01", "2025-02-01", "2025-03-01", "2025-04-01"], legend=False, grid=True, fontsize=15)plt.show()
The total is 1,068KWh - basically, a MegaWatt-hour of storage.

Here's a quick graph to show how the storage would be used over the year.

Graph showing a steady climb to 1 MegaWatt-hour and then down again.

As you can see, even in this scenario there are a few days where we'd need to import energy from the grid.

Is this sensible?


Probably not, no. It doesn't account for increased energy use from having an electric car or moving away from gas heating / cooking. As solar panels increase in efficiency, it might be more sensible to replace the panels on my roof, or add some onto a shed.

The environmental impact of creating and storing such huge batteries could also be factored in.

A battery which is only 100% full for a few days probably isn't an efficient design. Using wind, hydro, and other green sources from the grid might be preferable.

But, remember, this is an exercise in wishful thinking.

Is this possible?


Grid-scale batteries exist and they work brilliantly.

But if I wanted my own MegaWatt-hour of battery storage, it would probably cost me between £100k and half-a-million quid.

That doesn't include maintenance, the land, planning permission, and a hundred other things.

But battery prices are falling fast. In the last decade lithium ion battery prices have fallen 90%. With new sodium ion batteries promising an even bigger drop - down to US$10/kWh.

If - and it is a big if - those numbers came to pass, it would probably cost around £8,000 for a domestic battery. Basically the same cost as adding solar panels in the first place.

Domestic solar works - yes, even in the rainy UK! It is relatively cheap, moves energy production as close as possible to energy consumption, reduces bill-shock, and means we don't have endless planning arguments about whether fields should be turned into solar farms.

It is possible that, not too long in the future, every home could also have a 1 MegaWatt-hour battery. They would be able to capture all the excess solar power generated in a year.

There's a bright and sunny future where every home can be solar-self-sufficient.

#solar


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