Quote Comparison Guide · West Midlands Homeowners

Octopus Energy solar vs a local MCS installer: how to compare quotes

Written by Chris Hammond, Founder and Managing Director · Last updated: 18 October 2026 · Sources: Ofgem Smart Export Guarantee, MCS

Many homeowners in Birmingham, Solihull and across the West Midlands get a solar quote from a large national energy supplier alongside one or two local MCS-certified installers. This guide explains how export tariffs actually work, what differs between national packages and bespoke local engineering, and the questions to ask before you sign.

Solar City, Unit 18, The Business Centre, 20 James Road, Tyseley, Birmingham B11 2BA. 0121 707 9991. MCS NIC-1542.

Myth-busting: you do NOT need to buy solar from your energy supplier to get their export tariff

The single most common misconception we hear on the phone is: “If I want an Octopus export tariff, do I have to buy my solar panels from Octopus?”

The factual answer is no. Under Ofgem's Smart Export Guarantee (SEG) rules, electricity suppliers must accept export applications from any homeowner whose solar PV system is certified under the Microgeneration Certification Scheme (MCS) and connected via a smart meter and DNO notification.

Standard export tariffs (such as Octopus Outgoing): Open to any MCS-certified solar installation (including Solar City certificate NIC-1542) once you have your MCS certificate and DNO G98/G99 confirmation letter.
Other energy suppliers: Your MCS certificate is equally valid with E.ON Next, British Gas, ScottishPower, EDF and OVO if you switch electricity supplier in the future.
Smart automated tariffs (such as Intelligent Flux): Some specialist automated import/export tariffs require specific inverter/battery brands on the supplier's compatible-kit list, whereas time-of-use tariffs (such as Octopus Go, Cosy or Flux) work with any programmable hybrid inverter and battery such as Fox ESS or Sigenergy. Always check the current tariff terms for your chosen supplier.

At a glance: National supplier vs Local MCS installer

Accreditations: Both must hold MCS certification and consumer code membership (verify our MCS NIC-1542 and RECC registration).
Equipment choice: National schemes usually standardise on one or two hardware lines; Solar City installs Fox ESS, Aiko, EcoFlow, Sigenergy, Trina, LONGi.
Who visits your roof: Deal directly with our Tyseley engineers rather than a national call-centre queue.
Local aftercare: We restrict our work to within 40 miles of Solihull so we can provide maintenance and repairs ourselves.

Side-by-side comparison for West Midlands homeowners

Comparison area	National energy supplier solar package	Solar City (local MCS NIC-1542 installer)
Equipment brands	Typically restricted to a narrow national procurement list and fixed package sizes	We install Fox ESS, Aiko, EcoFlow, Sigenergy, Trina, LONGi, sizing panel wattage, string or hybrid inverters and modular batteries around your roof and usage
Design & survey	Initial call-centre consultation followed by a scheduled regional survey	Self-serve instant online design tool followed by a direct engineering conversation and on-site survey by our Tyseley team
Complex or multi-aspect roofs	Standardised rules can rule out garages, dormers, hipped roofs or split east-west arrays	Bespoke rail layouts, dual-MPPT stringing and in-roof or on-roof mounting tailored to West Midlands housing stock
Export tariff eligibility	Eligible for SEG and supplier tariffs (with certain tariffs tied to specific battery brands)	Full MCS certificate (NIC-1542) and DNO G98/G99 handover eligible for SEG export tariffs across Octopus, E.ON, British Gas, ScottishPower and others
Long-term support & fault finding	Logged through national customer support tickets	Direct phone line (0121 707 9991) to our Tyseley, Birmingham depot (B11 2BA), backed by electrical heritage since 1983

Equipment choice, installation and local aftercare

1. Equipment sized around your roof

Different roofs suit different panel dimensions and inverter start-up voltages. Because we install Fox ESS, Aiko, EcoFlow, Sigenergy, Trina, LONGi, you can compare a cost-effective Fox ESS hybrid and EP6/EP12 stackable battery against an all-in-one Sigenergy SigenStor system on the same roof.

2. In-house Tyseley installation team

We have been installing solar since 2005 and set up Solar City in 2010 as a specialist PV firm. You deal with the same local business from desktop design through to scaffolding, roofing, electrical commissioning and handover. See our published local case studies and verified homeowner reviews.

3. Local support on 0121 707 9991

A solar PV system sits on your roof for 25+ years. Having your installer based at Unit 18, The Business Centre, 20 James Road, Tyseley, Birmingham B11 2BA means Wi-Fi dongle resets, battery expansions, EV chargers and inverter repairs are handled locally.

Checklist: 7 questions to ask both a national supplier and a local installer

When you have two solar quotes on the table, compare these seven items line by line so you are comparing like with like:

Exact panel wattage and model: How many panels are included, what is the total kWp, and are bird protection or optimisers included if needed?
Usable battery capacity (kWh) vs nominal capacity: Check the usable kWh (for example ~5.2 kWh usable on a Fox ESS EP6 or ~10.4 kWh usable on an EP12) and the continuous charge / discharge rate in kW.
Scaffolding and access costs: Is scaffolding itemised clearly per roof elevation, or bundled with contingencies you may not need?
DNO G98 vs G99 pathway: Is the inverter export capped at 3.68 kW under G98, or are they submitting a full G99 application so you can use and export more power?
Who actually installs the system: Will the company's own employed engineers fit the system, or is the job sub-contracted out after you sign?
Tariff flexibility: Does the system lock you into one electricity supplier, or can you use any Ofgem SEG or time-of-use tariff?
Warranties and consumer code: Does the quote include MCS certification, RECC or HIES protection, and an insurance-backed workmanship warranty?

Indicative Solar City benchmarks

Want to benchmark a quote right now? Here are sample indicative cash figures from our 2026 Birmingham solar cost guide:

About 3 kWp (6 to 7 panels (2.79 to 3.26 kWp)): Around £3,800 to £4,250 (solar only)
About 4 to 4.7 kWp (8 to 10 panels (3.72 to 4.65 kWp)): Around £4,600 to £5,100 (solar only)
About 6 kWp (13 panels (6.05 kWp)): Around £6,000 (solar only)
About 7 to 7.4 kWp (15 to 16 panels (6.98 to 7.44 kWp)): Around £6,500 to £6,950 (solar only)
10 panels (4.65 kWp) + Fox H-series hybrid + Fox EP6 x1 (~5.2 kWh usable): £6,435
10 panels (4.65 kWp) + Fox H-series hybrid + Fox EP12 x1 (~10.4 kWh usable): £7,650
13 panels (6.05 kWp) + Fox H-series hybrid + Fox EP6 x2 (~10.4 kWh usable): £8,280

Every figure is indicative, from the Solar City design tool at solarcityuk.co.uk/design. Scaffolding is extra (around £400-£500 per side) and an on-site survey confirms your final design and price.

Comparing solar quotes FAQs

Factual answers on export tariffs, MCS rules and local vs national installers.

Do I have to buy solar panels from Octopus Energy to get an Octopus export tariff?

No, under Ofgem Smart Export Guarantee (SEG) rules you do not need to buy your solar panels from your energy supplier to access their export tariffs; any solar installation with a valid MCS certificate (such as Solar City NIC-1542), DNO notification and a smart meter can apply for export tariffs from Octopus, E.ON, British Gas, ScottishPower or other suppliers, subject to each tariff’s specific meter and kit compatibility rules.

What is the main difference between a national energy supplier solar quote and a local MCS installer?

A national energy supplier typically offers a standardised national equipment menu managed through central call centres and regional crews, whereas a local MCS installer like Solar City designs around a wider choice of brands (Fox ESS, Aiko, EcoFlow, Sigenergy, Trina, LONGi) and handles your survey, installation and long-term aftercare directly from our Tyseley, Birmingham yard.

Can a local MCS installer fit equipment that works with smart time-of-use tariffs?

Yes, we install Fox ESS hybrid inverters, EP6 and EP12 batteries, Sigenergy SigenStor systems and smart EV chargers that let you charge batteries overnight on off-peak import tariffs and export surplus solar during the day, though you should always check your chosen supplier’s current compatible-device list if you want automated tariff control.

Who carries out the roof survey and installation when you book with Solar City?

Every Solar City domestic installation within 40 miles of Solihull and Birmingham (B11 2BA) is surveyed, installed and commissioned by our own in-house MCS-certified team rather than passed to an unknown regional sub-contractor.

What happens if I need maintenance, fault-finding or an inverter check years later?

Because our yard is at Unit 18, The Business Centre, 20 James Road, Tyseley, Birmingham B11 2BA, you can call 0121 707 9991 and speak directly to the team that installed your system, and we also offer dedicated solar repair and maintenance services across the West Midlands.

How can I compare a national solar quote against Solar City’s prices before booking a survey?

You can use our free instant design tool at solarcityuk.co.uk/design to see indicative cash prices for 6 to 16 panels (for example £5,085 for 10 AIKO 465W panels with a Fox ESS string inverter, or £6,435 with a Fox H-series hybrid and EP6 battery) and compare the exact panel wattage, usable kWh, scaffolding and DNO inclusions line by line. Every figure is indicative, from the Solar City design tool at solarcityuk.co.uk/design. Scaffolding is extra (around £400-£500 per side) and an on-site survey confirms your final design and price.

Solar City is a trading name of D J HAMMOND ELECTRICAL CONTRACTORS LTD, company number 05338112, VAT 389137316.

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