SavingEnergy.com — a lit shopfront on a wet Oxfordshire street at night
Independent · Engineer-led · Measured, not assumed

Is your solar or heat-pump quote fair?

Britain is buying heat pumps, solar and batteries on the strength of a promise. The Government’s own data shows the promise and the delivered performance are rarely the same thing. Send me the quote before you sign it.

Get a Quote Review — £69 See the evidence
Inside the doorway, warm light

Measured, not assumed.

Every figure in an installer’s quote is a prediction. I check the predictions against your actual home — the fabric, the flow temperature, the way you really live in it — and tell you which ones hold up.

A lamplit workbench
What I check

Four systems. One engineer.

No commission, no installer relationships, no kit to sell. Just the numbers, checked by someone with nothing riding on the answer.

Station 01 ★

Solar & Battery

Generation · payback maths

Panel count, orientation, shading and inverter sizing — plus the battery payback maths. Most quotes overstate the generation and understate the years.

Station 02

Heat Pumps

Heat loss · real SCOP

Heat loss, flow temperature, emitter sizing and the SCOP you will actually get — not the one printed on the datasheet.

Station 03

Insulation

Fabric first · right order

Fabric first, always. Whether your money does more in the walls and the loft before any kit goes anywhere near the house.

Station 04

Boilers

Repair or replace · honest sizing

Whether replacing genuinely beats repairing, and whether the sizing is honest or simply the biggest unit on the van.

Not sure which applies to you? Send the quote exactly as it stands — the Quote Review covers whichever technology it is for, and you get a straight written answer on whether it is fair. Get a Quote Review — £69 →

The till Why the chasing set-up pays for itself
38UK businesses close every day because of late payment
£17kowed on average to each UK business affected by late payment
86 hrsa year spent chasing late payment, per business affected
Source: Small Business Commissioner / London Economics late-payment research, 2025
A panelled wall under picture lights
The evidence

Sourced, not assumed.

Every claim on this site traces back to a Government or regulator dataset. These are the three that matter most.

Screenshot of the Dyno Tech Auto Centre Website homepage

91.9% below design

DESNZ · Electrification of Heat · Dec 2024
Read the source →
Screenshot of the SavingEnergy.com Website homepage

And the gap is widening

Ofgem · RHI in-situ 2017–2022 · Nov 2024
Read the source →
Screenshot of the Lister Stealth Website homepage

EPCs are being replaced

GOV.UK · Home Energy Model · 2027
Read the source →
The shop counter, ledger and brass lamp
Scene Four · The counter

The engineer who reads it.

Forty years measuring things properly.

I started as an apprentice Instrument Artificer in 1983 and spent four decades keeping serious industrial systems measured, calibrated and honest. M.Sc. on the wall, kettle by the bench.

I read an energy quote the same way: properly, line by line, with the working shown. No commission, no installer relationships, no script — just your numbers, checked against your actual home.

You get me. That's the whole company.

— Darren Emery, Oxfordshire
Can you get me a cheaper quote?

No — I don't sell or broker anything. I tell you whether the quote in your hand is fair, what the numbers actually say, and what to ask if they don't stand up.

Are you on the installer's side or mine?

Yours. The £69 is the only money in this — no commission, no referral fees, no kit to sell. That's the whole point of a second opinion.

What if the quote turns out to be fine?

Then you'll know, in writing, and you can sign with a clear head. A green light is worth as much as a red one.

What do you need from me?

The quote (a PDF or a photo of it), your postcode and a few facts about the house. No site visit, no salesman at your door.

What does it cost?

£69, one flat fee. Usually back to you within 2 working days — and if I'm at capacity you'll know before you pay, not after.

Engineer-led advice — independent review of your quote
The £69 Quote Review

The Second Opinion. One flat fee.

£69 — no commission, no installer relationships, no upsell. I don’t sell the kit.

A full, plain-English traffic-light report

Sizing and assumptions checked against your actual home

Whether the price stands up against the market

The questions to put back to your installer

Usually within 2 working days. If I’m at capacity you’ll know before you pay — I won’t take your money and leave you waiting.

Send me the quote →
The SavingEnergy.com shopfront at night, its light still on
— the bell rings again as you leave —

Send me the quote.
I’ll tell you straight.

No forms, no funnels. One email address, read by the person who'll do the work.

darren@savingenergy.com →