Sector: Offices & Workplaces

Solar Power Purchase Agreements for offices & workplaces

Office buildings — particularly newer 1990s+ stock with portal-frame structure — are increasingly suited to PPAs as commercial MEES tightens. Multi-let landlords now retrofit before tenant fit-out to lift EPC ratings.

Last reviewed 28 September 2026 9 min read By Offices & Workplaces

Quick answer: solar PPAs for offices & workplaces

A solar PPA for offices & workplaces in 2026 typically prices at 13–18 p/kWh in year one on a 50–500kWp system, versus 21–25 p/kWh grid import. The provider funds, owns and maintains the system for 15–25 years and you buy only the power it generates — no capital outlay. Typical year-1 saving: £8k–£90k.

2026 typical PPA profile — offices & workplaces
System size50–500kWp
Year-1 PPA tariff13–18 p/kWh
Demand-PV matchGood — Mon-Fri 8am-6pm matches PV
Annual saving range£8k–£90k

Five drivers of PPA economics in offices & workplaces

MEES EPC B (proposed 2031)

The floor to let is EPC E today; EPC B is proposed for 2031 for buildings over 1,000 m² — a PPA is the cheapest route to the uplift.

Workday load

Mon-Fri 8am-6pm matches PV beautifully; aircon load especially in summer.

Tenant ESG mandates

Premium tenants (banks, law firms, tech) demand on-site renewables.

Multi-let landlord model

Landlord installs PPA; pass benefit to tenants via service charge or rent uplift.

Sub-verticals within offices & workplaces

Every sub-vertical inside this sector has slightly different PPA economics — load profile, roof type, covenant strength all vary.

Single-occupier HQs

Large bespoke PPAs; corporate-PPA structures common.

Multi-let business parks

Multi-site sleeved PPAs increasingly attractive.

City-centre office towers

Limited roof; vertical BIPV emerging but rare.

Co-working spaces

Operator-led; on-site PPA where landlord agrees.

Government buildings

PSDS dominates; PPA emerging as supplement.

Tech & innovation hubs

Aspirational ESG; first-mover PPA adoption common.

Case study

720kWp PPA for a Coventry Auto-parts Factory

System size720 kWp
PPA tariff12.2 p/kWh (year 1)
Contract term20 years
Year-1 saving£82,000

Full case study

Funding a offices & workplace solar system: PPA vs the alternatives

How a PPA compares with the other routes a offices & workplaces business can use to fund solar:

RouteUpfrontWho owns & maintainsBest when
Solar PPA£0ProviderNo capital; want predictable 13–18 p/kWh power, off balance sheet
Cash / CapExFull system costYouCapital available; want lowest lifetime cost + 100% AIA in year one
Lease / asset finance£0 downYou (after term)Want eventual ownership but spread the cost
Grant-fundedPart-fundedYouYou qualify for sector grant funding (often public sector)

Full head-to-head breakdowns on compare PPA UK; tariffs on 2026 PPA rates.

Watch-outs specific to offices & workplaces

  • Service charge / rent recoverability: confirm pass-through mechanism before signing.
  • Listed status: heritage buildings may not permit visible solar.
  • Tenant terms: tenancies need to allow rent / charge passthrough mid-term.
Donovan Fawcett · Director, SEO Dons Ltd Twelve years in UK commercial solar SEO and PPA advisory. Editorial policy & independence.
FAQs

PPA FAQs — Offices & Workplaces

What's the typical PPA tariff for offices & workplaces in 2026?

Indicative 2026 tariffs for offices & workplaces range 13–18 p/kWh. The lower end applies to investment-grade off-takers on 25-year contracts with strong daytime self-consumption; the upper end applies to smaller systems or shorter terms. Our PPA calculator models your specific site.

How long does the PPA setup take?

From first call to commissioning typically 6-12 months. Indicative tariff in 2-4 weeks, site survey + heads-of-terms in 4-8 weeks, full contract in 8-12 weeks, build in 6-16 weeks. Larger systems with DNO upgrades take longer.

What system size suits offices & workplaces?

Typical 2026 systems for offices & workplaces range 50–500kWp. Smaller sites stack with battery storage; larger sites may split across rooftop + ground-mount or multi-site sleeved structures.

Are there grant alternatives that beat PPA?

Grant capital can beat a PPA on lifetime cost, but check the window is actually open before you plan around it. The main public-sector route, the Public Sector Decarbonisation Scheme, has had no open application window since Phase 4 closed in November 2024 — and even while it was open it was heat-led, so solar qualified only alongside a fossil-fuel heating replacement in the same building. The Industrial Energy Transformation Fund, once the route for energy-intensive manufacturers, closed in July 2025 with no successor fund. For most commercial buyers a PPA wins on cashflow and admin simplicity, and it is deployable now rather than contingent on a future phase. See PPA vs grant-funded.

What's the off-taker covenant requirement?

Most providers want investment-grade or strong-unrated covenant. For weaker covenants, parent guarantees, letters of credit, or shorter contracts can bridge. See off-taker covenant deep-dive.

Get an indicative PPA tariff for your offices & workplace site

A 60-second form gives us enough to return a vetted provider shortlist and indicative 13–18 p/kWh tariff within one working day.

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Owner-occupied offices with steady daytime demand are natural candidates for a rooftop PPA on your own building, while tenants in multi-let blocks usually look off-site.

See what PPA providers would quote you

Solar Power Purchase Agreements for offices & workplaces — tell us about your site and we'll return an indicative p/kWh tariff for it. Reply by email within one working day.

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