Setting up in Val-d'Oise

Digital and energy infrastructure in Val-d'Oise

Fibre, 4G and 5G town by town, electricity generation and consumption, substations, heating, cooling and gas networks: data published by Arcep, ANFR, the grid operators and the French Ministry for Ecological Transition, with their dates.

Key figures

Each figure is taken from its source, whose reference period is shown; “calculated” marks a value derived here from published data (a sum or a ratio), with the method alongside.

98.2%Share of premises connectable to FTTHQ2 2026 · calculated value
636,404 locauxPremises connectable to fibre to the home (FTTH)Q2 2026
984 sites-opérateur5G sites, total of the four operators30/06/2026 · calculated value
1,129 stationsStations of the four operators authorised for 5G (in service or not)31/08/2026 · calculated value
138.5 MWInstalled generation and storage capacity (register)31/07/2026 · calculated value
4,505 installationsNumber of generation and storage installations31/07/2026 · calculated value
5,065,061 MWhElectricity consumption (all sectors)2024 · calculated value
18 réseauxDistrict heating networks in operation serving the Val-d'Oisedonnées 2024, fichier FCU du 14/09/2026 · calculated value
1 réseauDistrict cooling networks in operation serving the Val-d'Oisedonnées 2024, fichier FCU du 14/09/2026 · calculated value

Already published on this site, from INSEE

INSEE publishes, based on Arcep data, the share of premises that can connect to fibre and the share of land area covered by 4G for the département as a whole. These values also appear on the “Access and transport” page; they refer to an earlier quarter or year than the town-level data below.

Part des locaux raccordables à la fibre optique, Val-d'Oise, 1er trimestre 2025 : 96.7 % (Insee, La France et ses territoires, édition 2026 — Arcep)
Part de la surface couverte en 4G, Val-d'Oise, 2024 : 100 % (Insee, La France et ses territoires, édition 2026 — Arcep)

Map by town

Choose an indicator: each circle is a town, placed at its centre, coloured by the class shown in the legend. Towns with no published value are grey. The table below gives the same values.

Indicator shown Premises able to connect to fibre (FTTH) 4G sites (total of the four operators) 5G sites (total of the four operators) Grid-connected generating capacity (MW)

99% or more
95% to under 99%
80% to under 95%
under 80%
not published

Base map: IGN. Town positions: the site's town database. Values: see the table and sources.

Table by town

One row per town. An empty cell means the value is not published for that town (statistical confidentiality or no measurement), never that it is zero.

Filter by town 183 towns shown Download the table (CSV)

Table by town
Town	Fibre (FTTH), share of premises able to connect	4G sites	5G sites	Connected generation (MW)	Electricity consumption (MWh)	Gas network
Ableiges	100.0%	4	4		4,295	GRDF
Aincourt	100.0%	0	0		4,218	GRDF
Ambleville	100.0%	4	2		1,489
Amenucourt	100.0%	2	2		764	GRDF
Andilly	96.1%	5	5	0.1	12,282	GRDF
Argenteuil	99.5%	85	79	17.5	322,112	GRDF
Arnouville	99.7%	13	13	0.2	39,943	GRDF
Arronville	100.0%	4	4		2,939
Arthies	100.0%	0	0		1,095
Asnières-sur-Oise	92.8%	5	4		15,010	GRDF
Attainville	100.0%	3	3		6,851	GRDF
Auvers-sur-Oise	99.9%	4	4	0.1	22,694	GRDF
Avernes	100.0%	0	0		3,618
Baillet-en-France	100.0%	5	3	0.0	12,225	GRDF
Banthelu	97.1%	0	0		400
Beauchamp	98.3%	8	6	0.6	41,734	GRDF
Beaumont-sur-Oise	97.8%	7	7	0.2	32,308	GRDF
Bellefontaine	100.0%	0	0		1,502	GRDF
Belloy-en-France	100.0%	4	3	0.1	8,001	GRDF
Bernes-sur-Oise	100.0%	2	2	0.1	7,049	GRDF
Berville	100.0%	0	0		1,262
Bessancourt	100.0%	5	4	0.2	22,835	GRDF
Béthemont-la-Forêt	100.0%	0	0		1,495	GRDF
Bezons	95.0%	25	24	0.4	151,540	GRDF
Boisemont	99.7%	0	0		3,696	GRDF
Boissy-l'Aillerie	100.0%	5	5	3.9	11,499	GRDF
Bonneuil-en-France	97.7%	4	3		24,758	GRDF
Bouffémont	96.0%	7	7	0.3	19,222	GRDF
Bouqueval	100.0%	0	0	17.6	9,410
Bray-et-Lû	100.0%	3	2		4,692	GRDF
Bréançon	100.0%	0	0		1,744
Brignancourt	100.0%	0	0		790	GRDF
Bruyères-sur-Oise	100.0%	4	2	0.1	39,132	GRDF
Buhy	100.0%	4	0		1,147
Butry-sur-Oise	100.0%	0	0	0.0	6,096	GRDF
Cergy	98.6%	55	50	3.3	264,444	GRDF
Champagne-sur-Oise	100.0%	6	5	0.3	16,953	GRDF
Charmont	100.0%	1	0		161
Chars	100.0%	3	1		12,155	GRDF
Châtenay-en-France	100.0%	4	0		397	GRDF
Chaumontel	100.0%	4	4	0.3	12,691	GRDF
Chaussy	100.0%	4	2		2,949
Chauvry	100.0%	0	0		980	GRDF
Chennevières-lès-Louvres	100.0%	4	1		5,459
Chérence	100.0%	1	1		843
Cléry-en-Vexin	100.0%	4	2		1,877
Commeny	100.0%	0	0		2,254
Condécourt	100.0%	1	1		2,123
Cormeilles-en-Parisis	97.4%	19	19	0.6	93,755	GRDF
Cormeilles-en-Vexin	100.0%	0	0		5,468	GRDF
Courcelles-sur-Viosne	100.0%	0	0		881	GRDF
Courdimanche	98.1%	5	5	0.1	17,088	GRDF
Deuil-la-Barre	98.6%	12	12	0.3	63,527	GRDF
Domont	97.4%	15	14	0.2	47,557	GRDF
Eaubonne	99.5%	17	16	0.3	72,477	GRDF
Écouen	98.3%	5	5	0.1	28,490	GRDF
Enghien-les-Bains	99.0%	5	5		50,900	GRDF
Ennery	100.0%	7	7	0.2	13,331	GRDF
Épiais-lès-Louvres	100.0%	0	0		795
Épiais-Rhus	100.0%	0	0		2,800
Épinay-Champlâtreux	100.0%	2	0		629
Éragny-sur-Oise	97.9%	11	11	0.4	65,262	GRDF
Ermont	98.4%	20	19	3.3	76,628	GRDF
Ézanville	99.1%	7	6	1.3	24,107	GRDF
Fontenay-en-Parisis	99.0%	4	2	0.0	6,944	GRDF
Fosses	98.3%	6	5	0.4	29,255	GRDF
Franconville	99.9%	19	15	0.2	97,121	GRDF
Frémainville	100.0%	4	0		2,017
Frémécourt	100.0%	4	1		1,916	GRDF
Frépillon	100.0%	2	2	0.9	21,486	GRDF
Frouville	100.0%	4	0		1,490
Garges-lès-Gonesse	96.3%	28	26	0.3	86,994	GRDF
Genainville	100.0%	1	0		2,400
Génicourt	100.0%	0	0		3,228	GRDF
Gonesse	96.7%	34	29	0.3	233,465	GRDF
Goussainville	98.5%	22	20	1.1	99,474	GRDF
Grisy-les-Plâtres	92.7%	2	1		2,966
Groslay	97.9%	6	3	0.2	27,745	GRDF
Guiry-en-Vexin	100.0%	0	0		1,030
Haravilliers	100.0%	4	2		2,329
Haute-Isle	100.0%	0	0		919	GRDF
Hédouville	100.0%	0	0		1,328
Herblay-sur-Seine	98.7%	29	27	1.0	97,993	GRDF
Hérouville-en-Vexin	100.0%	4	3		3,170
Hodent	100.0%	0	0		1,265	GRDF
Jagny-sous-Bois	100.0%	4	0		1,108
Jouy-le-Moutier	96.5%	11	7	0.8	49,247	GRDF
L'Isle-Adam	99.9%	11	10	0.1	56,400	GRDF
La Chapelle-en-Vexin	100.0%	0	0		1,179
La Frette-sur-Seine	98.7%	4	4	0.1	13,628	GRDF
La Roche-Guyon	100.0%	4	0		2,366	GRDF
Labbeville	100.0%	4	4		2,844
Lassy	100.0%	0	0		475	GRDF
Le Bellay-en-Vexin	99.5%	4	0		1,022
Le Heaulme	97.1%	0	0		803
Le Mesnil-Aubry	95.4%	4	4		3,731
Le Perchay	100.0%	0	0		1,868	GRDF
Le Plessis-Bouchard	94.0%	6	6	0.1	23,139	GRDF
Le Plessis-Gassot	89.3%	0	0		199
Le Plessis-Luzarches	100.0%	0	0		510	GRDF
Le Thillay	98.2%	9	9	0.5	26,669	GRDF
Livilliers	100.0%	0	0		1,600
Longuesse	100.0%	4	0		1,873
Louvres	98.4%	17	17	1.0	34,916	GRDF
Luzarches	99.7%	12	7	1.0	17,253	GRDF
Maffliers	100.0%	1	1	0.0	6,408	GRDF
Magny-en-Vexin	100.0%	7	7	0.2	25,947	GRDF
Mareil-en-France	100.0%	0	0		3,082
Margency	99.9%	0	0		8,586	GRDF
Marines	99.7%	4	2		30,505	GRDF
Marly-la-Ville	90.1%	5	3	0.2	27,366	GRDF
Maudétour-en-Vexin	97.7%	4	2		1,239
Menouville	100.0%	4	2		369
Menucourt	97.0%	4	1	0.2	13,308	GRDF
Mériel	100.0%	6	6	0.1	19,360	GRDF
Méry-sur-Oise	99.6%	10	10	0.2	85,895	GRDF
Moisselles	98.2%	0	0		11,833	GRDF
Montgeroult	100.0%	1	1		1,101	GRDF
Montigny-lès-Cormeilles	98.8%	19	17	0.3	54,670	GRDF
Montlignon	93.1%	1	1	0.1	9,918	GRDF
Montmagny	96.6%	7	6	0.2	36,871	GRDF
Montmorency	96.9%	18	17	0.2	63,902	GRDF
Montreuil-sur-Epte	100.0%	0	0		1,561
Montsoult	99.7%	2	2	0.1	30,833	GRDF
Mours	100.0%	3	3	0.5	6,100	GRDF
Moussy	100.0%	3	3		408
Nerville-la-Forêt	100.0%	1	1		2,436
Nesles-la-Vallée	100.0%	2	2		7,551	GRDF
Neuilly-en-Vexin	96.4%	0	0		850
Neuville-sur-Oise	100.0%	4	3	0.7	27,718	GRDF
Nointel	100.0%	4	4		3,194	GRDF
Noisy-sur-Oise	100.0%	0	0		2,230
Nucourt	100.0%	2	2		6,860	GRDF
Omerville	100.0%	0	0		1,334
Osny	99.1%	21	21	0.9	126,291	GRDF
Parmain	100.0%	4	4	0.1	15,295	GRDF
Persan	99.5%	7	5	0.4	56,795	GRDF
Pierrelaye	94.3%	9	8	0.2	39,060	GRDF
Piscop	96.4%	5	4		4,216	GRDF
Pontoise	95.7%	19	16	5.7	101,308	GRDF
Presles	100.0%	7	5	0.0	14,712	GRDF
Puiseux-en-France	98.4%	0	0	0.8	7,797	GRDF
Puiseux-Pontoise	90.3%	4	4		18,657	GRDF
Roissy-en-France	82.2%	22	18	4.3	339,373	GRDF
Ronquerolles	99.7%	3	1		2,954	GRDF
Sagy	100.0%	0	0		4,927	GRDF
Saint-Brice-sous-Forêt	99.1%	17	16	0.4	58,549	GRDF
Saint-Clair-sur-Epte	98.3%	0	0		5,758	GRDF
Saint-Cyr-en-Arthies	100.0%	0	0		1,038
Saint-Gervais	100.0%	4	1		4,031
Saint-Gratien	98.1%	15	14	0.9	54,302	GRDF
Saint-Leu-la-Forêt	99.0%	9	9	0.3	49,774	GRDF
Saint-Martin-du-Tertre	99.0%	4	0		8,418	GRDF
Saint-Ouen-l'Aumône	96.7%	34	30	10.4	302,397	GRDF
Saint-Prix	97.8%	4	2	0.2	25,495	GRDF
Saint-Witz	100.0%	5	3		24,411	GRDF
Sannois	98.5%	24	22	0.3	76,353	GRDF
Santeuil	100.0%	1	1		2,141	GRDF
Sarcelles	98.4%	41	41	14.5	147,461	GRDF
Seraincourt	100.0%	4	1		9,356	GRDF
Seugy	100.0%	0	0	0.1	2,919	GRDF
Soisy-sous-Montmorency	99.0%	16	15	0.3	52,703	GRDF
Survilliers	90.6%	2	2		29,150	GRDF
Taverny	99.7%	27	18	0.6	97,936	GRDF
Théméricourt	100.0%	4	2		1,414
Theuville	100.0%	1	1		259
Us	100.0%	4	1	0.1	6,572	GRDF
Vallangoujard	100.0%	0	0	0.1	2,416
Valmondois	100.0%	2	2	0.1	4,139	GRDF
Vaudherland	100.0%	0	0		801
Vauréal	99.8%	15	14	0.7	40,875	GRDF
Vémars	100.0%	5	3	17.4	16,882	GRDF
Vétheuil	100.0%	4	2		3,258	GRDF
Viarmes	99.1%	4	4	0.1	18,827	GRDF
Vienne-en-Arthies	100.0%	0	0		2,007
Vigny	100.0%	0	0		8,758	GRDF
Villaines-sous-Bois	100.0%	3	2		2,749	GRDF
Villeron	99.4%	2	2	0.2	6,665	GRDF
Villers-en-Arthies	100.0%	0	0		2,753
Villiers-Adam	100.0%	2	1		2,704	GRDF
Villiers-le-Bel	96.5%	16	15	15.0	75,141	GRDF
Villiers-le-Sec	95.2%	0	0		803
Wy-dit-Joli-Village	100.0%	4	0		1,618

Mobile: 4G and 5G

4G and 5G sites by town and operator are those published by Arcep, the French telecoms regulator, in “Mon réseau mobile” (sites providing mobile service); ANFR, the national frequency agency, separately publishes licensed radio stations and those declared in service.

Commercially open 5G sites — Orange : 231 sites (30/06/2026)

Commercially open 5G sites — SFR : 195 sites (30/06/2026)

Commercially open 5G sites — Bouygues Telecom : 274 sites (30/06/2026)

Commercially open 5G sites — Free Mobile : 284 sites (30/06/2026)

5G sites, total of the four operators : 984 sites-opérateur (30/06/2026, calculated value)

5G sites using the 700 MHz band (all operators) : 449 sites-opérateur (30/06/2026, calculated value)

5G sites using the 2100 MHz band (all operators) : 351 sites-opérateur (30/06/2026, calculated value)

5G sites using the 3500 MHz band (all operators) : 836 sites-opérateur (30/06/2026, calculated value)

Orange radio stations with at least one 5G transmitter declared in service (ANFR) : 242 stations (31/08/2026, calculated value)

SFR radio stations with at least one 5G transmitter declared in service (ANFR) : 198 stations (31/08/2026, calculated value)

Bouygues Telecom radio stations with at least one 5G transmitter declared in service (ANFR) : 277 stations (31/08/2026, calculated value)

Free Mobile radio stations with at least one 5G transmitter declared in service (ANFR) : 286 stations (31/08/2026, calculated value)

Stations of the four operators authorised for 5G (in service or not) : 1,129 stations (31/08/2026, calculated value)

Fibre and fixed networks

Every quarter, Arcep publishes for each town the number of premises (homes and business premises) and the number that can be connected to fibre to the home (FTTH).

Premises (homes and business premises), Arcep best estimate : 648,240 locaux (Q2 2026)

Premises connectable to fibre to the home (FTTH) : 636,404 locaux (Q2 2026)

Share of premises connectable to FTTH : 98.2% (Q2 2026, calculated value)

FTTH-connectable premises, Q1 2025 (Arcep series) : 620,237 locaux (Q1 2025)

Premises eligible for an FTTH offer (Ma connexion internet address base) : 623,335 locaux (30/06/2026)

Premises eligible for a satellite internet offer : 638,261 locaux (30/06/2026)

Other telecommunications infrastructure

Département's public-initiative network

Public-initiative network: Val d'Oise Fibre (OI code VOFI), FTTH infrastructure operator whose project owner is Val d'Oise Numérique; coverage area: département 95; parent listed: Lumière. Debitex Telecom (DETE, Altice France group) is also listed for Val d'Oise Numérique (93, 95). In Q2 2026 Val d'Oise Fibre is the sole FTTH infrastructure operator in 110 municipalities, all classified as public-initiative zone in Arcep's municipality layer. It is present, alone or with other operators, in 116 municipalities (column oi_ftth in communes.csv).

Arcep, Reference list of FTTH infrastructure operators (September 2025), 2025-09 ; read on 03/10/2026
Arcep, Fixed broadband observatory — municipality layer Q2 2026 (shapefile attributes), 2026-T2 ; read on 03/10/2026
Arcep, Fixed broadband and FTTH deployment observatory, Q2 2026 (Excel workbook, municipality / département sheets), 2026-T2 (situation au 30/06/2026, publié le 10/09/2026) ; read on 03/10/2026
Satellite internet

Ma connexion internet (Arcep), as of 30/06/2026: 638,261 of 638,261 recorded premises in Val-d'Oise are eligible for a satellite internet offer.

Arcep, Ma connexion internet — eligibility statistics by technology, by département, situation au 30/06/2026 ; read on 03/10/2026

Electricity

Generation: installations connected to the public grids, from the national register kept by the grid operators (Agence ORE, RTE, Enedis). Consumption: annual electricity consumption by sector, published for each town by Agence ORE; values covered by statistical confidentiality are not published.

Electricity
Indicator	Value	Reference period
Installed generation and storage capacity (register) (calculated value)	138.5 MW	31/07/2026
Installed capacity — Solar (calculated value)	53.3 MW	31/07/2026
Installed capacity — Bioenergy (calculated value)	49.9 MW	31/07/2026
Installed capacity — Non-renewable thermal (calculated value)	32.2 MW	31/07/2026
Installed capacity — Other (calculated value)	3.1 MW	31/07/2026
Number of generation and storage installations (calculated value)	4,505 installations	31/07/2026
Electricity consumption (all sectors) (calculated value)	5,065,061 MWh	2024
Electricity consumption — industry (calculated value)	485,533 MWh	2024
Electricity consumption — services (calculated value)	2,341,846 MWh	2024
Electricity consumption — residential (calculated value)	2,224,729 MWh	2024
Electricity consumption — agriculture (calculated value)	6,751 MWh	2024
Gas consumption (all sectors) (calculated value)	5,253,082 MWh	2024
Municipalities with a gas distribution operator (calculated value)	128 communes sur 183	référentiel Agence ORE (communes INSEE au 1er janvier 2025)
District heating networks in operation serving the Val-d'Oise (calculated value)	18 réseaux	données 2024, fichier FCU du 14/09/2026
District cooling networks in operation serving the Val-d'Oise (calculated value)	1 réseau	données 2024, fichier FCU du 14/09/2026
RTE substations and tapping points	40 sites	16/06/2026

Substations

Transmission substations (RTE) and distribution primary substations (Enedis) published as open data. RTE does not publish the town or coordinates of its substations: they are listed without a location.

Show the table (40)

Substations
Substation	Operator	Voltage	Function	Town	Status
AMELOT (AEROPORT PARIS NORD)	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
AULNAY-SOUS-BOIS	RTE	225kV	Poste de transformation	—	ACCORD ADMINISTRATIF
BELLOY-EN-FRANCE	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
BLERIOT (BLERIOT)	RTE	<45kV	Poste de transformation	—	EN EXPLOITATION
BLERIOT (ROISSY)	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
BREVAL	RTE	63kV	Poste de transformation	—	EN EXPLOITATION
BRICHE (LA)	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
CERGY	RTE	400kV	Poste de transformation	—	EN EXPLOITATION
CROIX-BAPTISTE (LA)	RTE	63kV	Poste de transformation	—	EN EXPLOITATION
CROS	RTE	225kV	Poste de transformation	—	ACCORD ADMINISTRATIF
FANAUDES	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
GONESSE	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
HAUTE-BORNE	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
HERBLAY	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
LIESS / CERGY H.BOR 1	RTE	225kV	Point de piquage	—	EN EXPLOITATION
LIESSE	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
MERY (CIE GLE EAUX A MERY-SUR-OISE)	RTE	63kV	Poste de transformation	—	EN EXPLOITATION
MOIMONT	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
PERSAN	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
PIQUAGE A AULNAY-SOUS-BOIS	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE A GONESSE	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE A LABBEVILLE	RTE	63kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE A SAINT-OUEN-L AUMONE	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE A VILLIERS LE BEL	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE BREVAL A VAUREAL (ZBRE5)	RTE	63kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE BREVAL A VAUREAL (ZBREV)	RTE	63kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE BRICHE A SAINT-DENIS (ZBRI5)	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE BRICHE A SAINT-DENIS (ZBRIC)	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE FANAUDES A MONTMAGNY (ZFAN5)	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE FANAUDES A MONTMAGNY (ZFANA)	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE HERBLAY A HERBLAY (ZHER7)	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE HERBLAY A HERBLAY (ZHERB)	RTE	225kV	Point de piquage	—	EN EXPLOITATION
PIQUAGE-A-MARECAGES (LES)	RTE	63kV	Point de piquage	—	EN EXPLOITATION
PLESSIS-GASSOT	RTE	400kV	Poste de transformation	—	EN EXPLOITATION
PUISEUX	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
SAUSSET	RTE	400kV	Poste de transformation	—	EN EXPLOITATION
TILLIERS	RTE	225kV	Poste de transformation	—	EN EXPLOITATION
VEXIN	RTE	63kV	Poste de transformation	—	EN EXPLOITATION
VIGNY	RTE	63kV	Poste de transformation	—	EN EXPLOITATION
VILLIERS-LE-BEL	RTE	225kV	Poste de transformation	—	EN EXPLOITATION

Connecting a consumer

The procedure is set out by the grid operators; this site links to their pages without summarising them beyond what they state.

Connecting a building, equipment or development project (Enedis)

Two cases: ≤ 36 kVA (remote commissioning possible) and > 36 kVA (technician visit). For a single-meter site: online request, quote approval and deposit, Enedis works, balance, commissioning through the supplier. The page states the quote is valid for 3 months. Requests at raccordement-entreprise-enedis.fr.

Enedis, 2026-10-03
Location of pooling areas and hosting capacities for consumption (RTE)

RTE publishes a map of consumer connection pooling areas under study or approved by the CRE, with a downloadable file (data at 31/07/2026). The file lists 11 areas; none is named after a Val-d'Oise location; the only Île-de-France area is "IDF Sud".

RTE, 2026-10-03

Heating, cooling and gas

District heating and cooling networks in Val-d'Oise from France Chaleur Urbaine (French Ministry for Ecological Transition and ADEME), which uses the annual survey of heating and cooling networks. Networks listed as “planned” are those the source publishes as such.

Heating, cooling and gas
Network	Type	Status	Towns	Operator	Length (km)	Energy delivered (MWh)	Renewable and recovered energy
Réseau chaud ADP le Bourget	heating	in service	Bonneuil-en-France	Aéroports de Paris Le Bourget	3.0	6,274	3.5%
IDEX CROIX ROUGE GEOTHERMIE	heating	in service	Taverny	IDEX ENERGIES Boulogne Billancourt	2.0	11,160	0.0%
Grand Ensemble Sarcelles-Locheres	heating	in service	Pierrefitte-sur-Seine, Sarcelles, Stains	DALKIA Paris la Defense	38.0	161,336	67.6%
Réseau de Cergy - Pontoise	heating	in service	Cergy, Éragny, Pontoise, Saint-Ouen-l'Aumône	CENERGY (CORIANCE)	65.0	273,714	69.4%
Van Gogh	heating	in service	Garges-lès-Gonesse	CORIANCE	2.0	13,509
Zup de Sannois - Ermont - Franconville	heating	in service	Ermont, Franconville, Sannois	SEFIR (ENGIE SOLUTIONS)	14.0	65,289	72.1%
Réseau d'Argenteuil - ARGEVAL	heating	in service	Argenteuil, Bezons	ARGEVAL (DALKIA)	15.0	105,819	80.8%
Réseaux chaud ADP Roissy	heating	in service	Le Mesnil-Amelot, Mauregard, Roissy-en-France, Tremblay-en-France	Aéroports de Paris	80.0	173,441	24.0%
Zup de l'Epine Guyon	heating	in service	Franconville	IDEX ENERGIES Boulogne Billancourt	2.0	7,967	0.0%
Réseau de Villiers le Bel - Gonesse	heating	in service	Gonesse, Villiers-le-Bel	Société Thermique de Villiers le Bel Gonesse (CORIANCE)	12.0	53,286	56.7%
Réseau de Pontoise	heating	in service	Pontoise	DALKIA Paris la Defense	2.0	21,323	0.0%
Zac de Montedour	heating	in service	Franconville	DALKIA Paris la Defense	2.0	13,687	0.0%
Réseau de Goussainville	heating	in service	Bouqueval, Goussainville, Le Plessis-Gassot	DALKIA Paris la Defense	12.0	18,276	90.0%
Placo	heating	in service	Argenteuil, Cormeilles-en-Parisis	ENGIE SOLUTIONS	1.5	7,105	100.0%
Réseau de Vemars	heating	in service	Vémars	DALKIA Paris la Defense		5,016	0.0%
Les chenes	heating	in service	Ermont	Nexity (ENGIE SOLUTIONS)		5,090	0.0%
Réseau de Garges-les-Gonesse	heating	in service	Garges-lès-Gonesse	ENERGIE VERTE DE GARGES (Coriance)		20,559	0.0%
Agrivalseine Energie	heating	in service	Bezons	AGRIVALSEINE ENERGIE (DALKIA)		7,616	80.8%
Réseau froid ADP Roissy	cooling	in service	Roissy-en-France	Aéroports de Paris	40.0	100,329
—	heating	planned	Garges-lès-Gonesse	Coriance
—	heating	planned	Saint-Ouen-l'Aumône	CENERGY (CORIANCE)
—	heating	planned	Sarcelles	Dalkia

What is not published as open data

This information does not exist as open data at the date of update. It must be requested from the relevant operator; CEEVO can help direct the request.

4G and 5G coverage by town and operator : Arcep publishes coverage maps, but no coverage rate by town and operator as open data. This page therefore gives the number of 4G and 5G sites per town; the share of the département's land area covered by 4G is INSEE's figure, based on Arcep data.
Available capacity for a consumer (withdrawal) per substation : Not published as open data for the Val-d'Oise. Caparéseau and the Enedis/RTE map cover GENERATION only (the RTE page says the map does not cover storage or consumption). For consumption, RTE only publishes pooling areas (none in the Val-d'Oise at 31/07/2026).
Caparéseau hosting capacities (S3REnR) as a file : Viewable on the Caparéseau interactive map (generation); no downloadable dataset found on ODRÉ or data.gouv.fr; not included.
Coordinates and municipality of RTE substations : Not published: RTE states it changed access to GPS data of transmission infrastructure for public security reasons.
Enedis primary substations with coordinates : No primary-substation dataset found in the Enedis open data catalogue (03/10/2026); only HTA/LV substations are published. The generation register cites substation codes (same as RTE codes) without name or coordinates.
Confidential municipal consumption cells : At municipal level some cells are withheld (commercially sensitive / personal data); flagged in conso_secret and excluded from totals.

Further information

Data centres and the digital industry Access and transport Setting-up costs Large sites of one hectare or more Town profiles

Contact CEEVO

Address: CEEVO, 2 Avenue du Parc, 95000 Cergy-Pontoise
Phone: +33 1 34 25 32 42
Email: ceevo@ceevo95.fr

Write to CEEVO View available premises

Sources

Insee, La France et ses territoires, édition 2026 (d'après l'Arcep) (parue le 24/09/2026 ; Licence Ouverte)
Arcep, Fixed broadband and FTTH deployment observatory, Q2 2026 (Excel workbook, municipality / département sheets) (2026-T2 (situation au 30/06/2026, publié le 10/09/2026) ; read on 03/10/2026 ; Licence Ouverte / Open Licence)
Arcep, Fixed broadband observatory — département layer Q2 2026 (shapefile attributes) (2026-T2 ; read on 03/10/2026 ; Licence Ouverte / Open Licence)
Arcep, Fixed broadband observatory — municipality layer Q2 2026 (shapefile attributes) (2026-T2 ; read on 03/10/2026 ; Licence Ouverte / Open Licence)
Arcep, Reference list of FTTH infrastructure operators (September 2025) (2025-09 ; read on 03/10/2026 ; Licence Ouverte / Open Licence)
Arcep, Ma connexion internet — eligibility statistics by technology, by département (situation au 30/06/2026 ; read on 03/10/2026 ; Licence Ouverte v2.0)
Arcep, Ma connexion internet — eligibility statistics by technology, by municipality (situation au 30/06/2026 ; read on 03/10/2026 ; Licence Ouverte v2.0)
Arcep, Mon réseau mobile — sites providing mobile service, mainland France, Q2 2026 (2026-T2 (au 30/06/2026) ; read on 03/10/2026 ; Licence Ouverte / Open Licence)
Arcep, Mon réseau mobile — history of 5G site counts by département and operator (au 30/06/2026 ; read on 03/10/2026 ; Licence Ouverte / Open Licence)
ANFR, Radio installations above 5 W — database as of 31/08/2026 (supports, stations, transmitters, bands) (base au 31/08/2026 (publiée le 06/09/2026) ; read on 03/10/2026 ; Licence Ouverte v2.0)
ANFR, Radio installations — reference tables (operators…) as of 31/08/2026 (base au 31/08/2026 ; read on 03/10/2026 ; Licence Ouverte v2.0)
Etalab / IGN / Insee, Administrative boundaries API — Val-d'Oise municipalities (current official geographic code) (lu le 2026-10-03 ; read on 03/10/2026 ; Licence Ouverte)
Ministère de la Transition écologique (Géorisques), Classified installations in Val-d'Oise (Géorisques API v1, 1,363 records) (lu le 2026-10-03 ; read on 03/10/2026 ; Licence Ouverte v2.0)
Préfecture du Val-d'Oise, Prefectoral order IC-23-117 of 20/10/2023 registering a combustion installation, SCALEWAY, Saint-Ouen-l'Aumône (published on Géorisques) (2023-10-20 ; read on 03/10/2026 ; Document administratif publié)
Préfecture du Val-d'Oise, Public inquiry notice — EQUINIX HYPERSCALE 2 (PA12) data centre, Argenteuil (order IC-22-033 of 19/05/2022) (2022-05-19 ; read on 03/10/2026 ; Document administratif publié)
MRAe Île-de-France, Environmental authority opinion of 18/11/2021 on the Equinix Hyperscale 2 (PA12) data centre project, Argenteuil (2021-11-18 ; read on 03/10/2026 ; Document administratif publié)
MRAe Île-de-France, Environmental authority opinion of 23/04/2025 on the Equinix PA16 data centre project, Argenteuil (2025-04-23 ; read on 03/10/2026 ; Document administratif publié)
ODRÉ / RTE, National register of electricity generation and storage installations (31/07/2026) (31/07/2026 ; read on 03/10/2026 ; Licence Ouverte 2.0)
ODRÉ / RTE, RTE substations and tapping points (16 June 2026) (16/06/2026 ; read on 03/10/2026 ; Licence Ouverte 2.0)
Agence ORE, Annual electricity and gas consumption by municipality (2023-2024 ; read on 03/10/2026 ; Licence Ouverte 2.0)
Agence ORE, Annual electricity and gas consumption by département (2023-2024 ; read on 03/10/2026 ; Licence Ouverte 2.0)
Agence ORE, Gas and electricity distributors by municipality (communes au 01/01/2025 ; read on 03/10/2026 ; Licence Ouverte 2.0)
IGN / Insee (geo.api.gouv.fr), Val-d'Oise municipalities (current COG) (COG en vigueur au 03/10/2026 ; read on 03/10/2026 ; Licence Ouverte 2.0)
France Chaleur Urbaine, District heating and cooling networks (données 2024 ; read on 03/10/2026 ; Licence Ouverte 2.0)
RTE, Consumer connection pooling areas — download (31/07/2026 ; read on 03/10/2026 ; non précisée sur la page)
RTE, RTE page on consumption pooling areas (lue le 03/10/2026 ; read on 03/10/2026 ; page web)
RTE, RTE page on grid hosting capacities (generation) (mise à jour des données : avril 2026 ; read on 03/10/2026 ; page web)
Enedis, Enedis connection page (read on 03/10/2026 ; page web)

Sources consulted on Oct. 3, 2026. Page updated on Oct. 3, 2026.