Kilowatt Kit

Energy Blog

UK energy news, solar analysis, EV charging guides, and data-driven research. Every article is source-backed and links to a free calculator so you can run the numbers yourself.

All AU Energy US Energy UK Grants UK Energy Solar Solar & Batteries EV Charging Data & Research
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Featured US Energy Jul 27, 2026 · 11 min read

Are Solar Panels Worth It in 2026? An Honest Answer After the Tax Credit Ended

The 30% federal solar tax credit ended on 31 Dec 2025. So is solar still worth it? Real 2026 payback, what incentives survive, when solar is NOT worth it, and how to avoid the sales traps.

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AU Energy 9 min read

Cheaper Home Batteries Program 2026: Australia's Solar Battery Rebate

Australia's federal battery rebate takes ~30% off a home battery — about $252 per usable kWh in 2026. Who qualifies, how much you get, the 1 May 2026 change, and how to claim it.

Jul 17, 2026 Read →
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UK Energy 9 min read

Aircon vs Fan: What This Heatwave Is Really Costing You Per Hour

A fan costs ~1p an hour. A portable aircon costs 21–37p. Real running costs per hour, night, and month at the July 2026 price cap — fans, air coolers, and aircon compared.

Jul 16, 2026 Read →
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US Energy 11 min read

Why Is My Electric Bill So High? 9 Causes, Checked With Real Numbers

US rates are up ~10% and summer cooling costs are at record highs. The nine causes that actually drive high electric bills — with the real math and a free calculator for each.

Jul 14, 2026 Read →
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UK Grants 8 min read

Boiler Upgrade Scheme 2026: The £9,000 Grant, Air-to-Air & What Changed

A temporary £9,000 grant for off-gas homes, new £2,500 air-to-air and heat-battery grants, the EPC condition removed, and an extension to 2030 — everything that changed in 2026.

Jul 14, 2026 Read →
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UK Grants 9 min read

What Replaced ECO4? The Warm Homes Plan Explained

ECO4 ends 31 December 2026. Here is what replaced it — the Warm Homes Plan and Warm Homes: Local Grant: who qualifies, the income threshold, what it covers, and how to apply.

Jul 14, 2026 Read →
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UK Energy 7 min read

Ofgem Price Cap 2026: Your New Unit Rate, Standing Charge & Bill Impact

What the Q1 2026 price cap means for your electricity and gas bills — unit rates, standing charges, and how to calculate your annual spend.

May 5, 2026 Read →
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Solar 9 min read

Solar Panel Cost UK 2025: Average Prices by System Size

How much do solar panels actually cost in the UK? Real 2025 price ranges for 3kWp to 10kWp systems, what drives the price, and what grants cut the cost.

May 5, 2026 Read →
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Solar & Batteries 10 min read

Is a Home Battery Worth It in the UK? 2025 Analysis

Solar batteries cost £6,000–£12,000. We run the numbers on real payback periods, when they make sense financially, and which systems are worth considering.

May 5, 2026 Read →
EV Charging 8 min read

Best EV Tariffs UK 2026: Cheapest Rates for Home Charging

The cheapest overnight EV tariffs in 2026 — E.ON Next Drive (~6.7p), Intelligent Octopus Go, OVO Charge Anytime and British Gas compared, with real annual savings.

Jul 14, 2026 Read →
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Data & Research 6 min read

UK Electricity Prices 2019–2026: A Complete History

How UK electricity unit rates have changed since 2019 — the energy crisis peak, Ofgem price cap timeline, and where prices stand today.

May 5, 2026 Read →
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Solar 9 min read

How Much Can Solar Panels Save in the UK? Real 2025 Figures

Actual savings data for UK solar owners in 2025 — typical bill reductions, SEG export income, and payback periods broken down by region and system size.

May 5, 2026 Read →

🧮 Put the numbers on your situation

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